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  • Our Range of Stepping Motors
    From tiny NEMA 11 at 16.7 oz-in to the huge NEMA 43 at a whopping 1586 oz-in of torque!
  • blueChick v. 4.2 CNC Machine
    Available in two sizes 1'x3' and 1'x2' routing areas.
  • Mechanics to Minimize Backlash
    Running on tensioned roller chain to eliminate backlash and small drive sprockets to increase mechanical precision.
  • Cable Carriers
    Perfectly manage the cables and hoses with these cable chains.
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    If you need BIG, we've got BIG. Available in 5 foot and 6 foot widths. Make it as long as you want!
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12"x36" blueChick v4.2 CNC Machine Kit (Parallel Interface)

$1739.00
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12"x36" blueChick v4.2 CNC Machine Kit without Electronics

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12"x 36" blueChick v4.2 CNC Machine Kit (USB Interface) - Requires Planet-CNC Software

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The blueChick v4.2 is a desktop sized CNC machine that has a working area of 12"x36"x3" (X, Y and Z travel distances. The blueChick is perfect for small routing jobs and is designed to use the Porter Cable 892 router, or our 2.2kW spindle.

The blueChick is a CNC machine kit capable of routing an area of 12"x36" with a total of 3" of z-axis travel. The version 4.2 was developed to provide an alternative drive method, locate the x-axis motor in a more appropriate location, increase the gantry structure and reduce the overall height of the machine. Additionally, the router selected for this machine is the Porter Cable 892 series of routers.

The kit includes the structure, hardware, mechanical components, and electronics (if that option was selected), you supply computer, cable/wires, and router. If putting electronics is not your thing, we have the electronics and computer all put together for you here and here.

During the design of this machine, it was important to maintain the most rigidity possible, and the selection of the router was key in this decision. The Porter Cable has a consistently dimensioned cylindrical motor housing which contributes to the structural integrity of the z-axis assembly. This is in contrast to the Bosch routers which has a complex housing form which is challenging for which to provide a mount. This is evident on the version 3.0, where there is only a single mount for the Bosch and two mounts for the Porter Cable. Two mounts are always better than one as the router will be much sturdier while routing.

The x-axis motor is in the new reinforced gantry structure (not under the table). The gantry structure is more in line with the blackToe and blackFoot CNC machines to provide an immense amount of structural rigidity to resist torsion. Torsion along the gantry happens when there is load on the router's bit as the machine travels along the x-axis. With the motor located within the gantry, the table has an unlimited length potential.

The z-axis motor is re-oriented to be located next to the router as opposed to the top of the z-axis assembly. This reduces the overall height envelope of the CNC machine, so this machine can sit underneath cabinetry and other areas that have a similar height restriction.

The chief difference from the version 3.0 blueChick CNC machine and this 4.2 version is the main drive mechanism. Roller chain was selected for this version to provide more robustness and ease of alignment. There is also a very interesting industrial appearance that comes with this type of mechanism. As with all machines, care should be taken with respect to fingers and other body parts getting into the parts of this mechanism.

Many of the parts that relate to alignment of the drive mechanics (roller chain and lead screw) are made to be adjustable. Most importantly, the chain can be tightened from either end of each axis. This makes it very easy to square the x-axis with respect to the y-axis. The height of the y-axis can be adjusted vertically to make sure the chain is perfectly horizontal. The Lead screw can be aligned in both x and y direction so the lead screw can be oriented vertically.

blueChick version 4.2 CNC Machine Features:

  • Routing Area 12"x36"x3"
  • Total envelope of the machine 24"x51"x22"
  • Structural Material: MDO (Medium Density Overlay)
  • Drive Method: X and Y axes: Roller Chain, Z axis: ACME Precision Lead screw and Anti-Backlash Nut (1/2"-10TPI @ 5 Starts - 2 turns per inch)
  • Drive sprockets - 9 teeth #25, pitch 1/4" (2.25" pitch circumference)
  • Rails: Aluminum 6061-T6. T6 Tempered for increased strength, good workability and high resistance to corrosion. Brinell Hardness: 95, Rockwell A Hardness: 40, Rockwell B Hardness: 60, Modulus of Elasticity: 10000 ksi (10000000 psi).
  • Rail bearings: Hardened Steel Dual Race V-Groove bearings (RM2), also known as "W" profile bearings.

Instructions

If you purchased the kit that contains mounts for a spindle, please follow the pictorial steps below. For kits that contain the mounts for the Porter Cable (3.5 inch diameter router housing), please follow the video assembly instructions near the bottom of this page.

1
Fasten One Table End

Fasten the table surface to one of the table ends. Use four (4) 1/4 x 1-1/2 inch screws and cross dowel nuts. Keep these screws loosely fastened.

2
Fasten Other Table End

Fasten the other table end using four (4) 1/4 x 1-1/2 inch screws and cross dowel nuts. Keep the screw loosely fastened.

3
Fasten First Under-Table Support

Add the first of three under-table supports. Use eleven (11) 1/4 x 1-1/2 inch screws and cross dowel nuts. Keep all of the screws loosely fastened.

4
First End Support and Table Connection

Use one (1) 1/4 x 1-1/2 inch screw and cross dowel nut to fasten the table end to the first under support piece. Keep this loosely fastened.

5
First End Support and Table End Connection Other Side

Use one (1) 1/4 x 1-1/2 inch screw and cross dowel nut to fasten the opposite table end to the first under support piece. Keep this loosely fastened.

6
Fasten Second Under Table Support (rib)

Add the second of the three under-table supports. Use eleven (11) 1/4 x 1-1/2 inch screws and cross dowel nuts. Keep all of the screws loosely fastened.

7
Second Table End Support Connection

Use one (1) 1/4 x 1-1/2 inch screw and cross dowel nut to fasten the table end to the second under support piece. Keep this loosely fastened.

8
Second Under Table Support Opposite End Connection

Use one (1) 1/4 x 1-1/2 inch screw and cross dowel nut to fasten the opposite table end to the second under support piece. Keep this loosely fastened.

9
Fasten Third Under Table Support

Add the third of the three under-table supports. Use eleven (11) 1/4 x 1-1/2 screws and cross dowel nuts. Keep all of the screws loosely fastened.

10
Third Table End and Under Support Connection

Use one (1) 1/4 x 1-1/2 inch screw and cross dowel nut to fasten the table end to the third under support piece. Keep this loosely fastened.

11
Third Support and Table End Opposite Connection

Use one (1) 1/4 x 1-1/2 inch screw and cross dowel nut to fasten the opposite table end to the third under table support piece. Tighten this and all of the other screws for the table supports and table ends from the previous steps.

12
Attach X-Axis Rails to First Side

Take two (2) of the X-axis rails (longer rails), ten (10) 1/4 x 1-1/2 inch screws and ten (10) 1/4 inch nuts; fasten the rails onto the first side of the table (above and below) using the screws (inserted from the top so the heads of the screws are oriented at the top of the table) and nuts. Tighten the screws only slightly so the rails can move horizontally, but not tip. This will allow the rails to be adjusted and tightened once the gantry is assembled and the gantry can auto correct the rail position.

13
Fasten Second Side X-Axis Rails

Take two (2) of the X-axis rails (longer rails), ten (10) 1/4 x 1-1/2 inch screws and ten (10) 1/4 inch nuts; fasten the rails onto the first side of the table (above and below) using the screws (inserted from the top so the heads of the screws are oriented at the top of the table) and nuts. Tighten the screws only slightly so the rails can move horizontally, but not tip. This will allow the rails to be adjusted and tightened once the gantry is assembled and the gantry can auto correct the rail position.

14
Add 1/4 inch ID Bearing to Shaft End Gantry Side

Insert one (1) 1/4 inch ID (inside diameter) bearing into the bearing seat in the shaft end gantry side. The diameter of the seat is very close to the outside diameter of the bearing, so this process may require a rubber or wood mallet to nudge the bearing into this seat.

15
V-Groove Bearing Assembly on Top Front Corner Shaft End Gantry Side

With one (1) 3/8 x 2 inch screw, one (1) v-groove bearing, two (2) large 3/8 inch washers, one (1) thin 3/8 inch washer, one (1) 3/8 inch nut, assemble the components as shown in the illustration. It is very important that the thin washer is between the v-groove bearing and large washer otherwise the outer race of the v-groove bearing will rub against the washer and the v-groove bearing will not turn.

16
Add Front Bearing Compression Screw and Cross Dowel

Insert one (1) 1/4 x 1-1/2 inch screw and cross dowel nut into the shaft end gantry side. Turn the screw so that only a few threads of the screw is driven into the cross dowel nut. This will provide enough space for the upcoming v-groove assembly to be added.

17
Add V-Groove Assembly to Lower Front of Shaft end Gantry Side

With one (1) 3/8 x 2 inch screw, one (1) v-groove bearing, two (2) large 3/8 inch washers, one (1) thin 3/8 inch washer, one (1) 3/8 inch nut, assemble the components as shown in the illustration making sure that the assembly is moved to the lower portion of the opening. Make sure the assembly is snug but not tight. This will enable the assembly to move up and down within this opening. It is very important that the thin washer is between the v-groove bearing and large washer otherwise the outer race of the v-groove bearing will rub against the washer and the v-groove bearing will not turn.

18
Add Screw for V-Groove Bearing Adjustment

Insert one (1) 1/4 x 1-1/2 inch screw and cross dowel nut into the shaft end gantry side. Turn the screw so that only a few threads of the screw is driven into the cross dowel nut. This will provide enough space for the upcoming v-groove assembly to be added.

19
Add V-Groove Assembly to Rear Bottom of Shaft End Gantry Side

With one (1) 3/8 x 2 inch screw, one (1) v-groove bearing, two (2) large 3/8 inch washers, one (1) thin 3/8 inch washer, one (1) 3/8 inch nut, assemble the components as shown in the illustration making sure that the assembly is moved to the lower portion of the opening. Make sure the assembly is snug but not tight. This will enable the assembly to move up and down within this opening. It is very important that the thin washer is between the v-groove bearing and large washer otherwise the outer race of the v-groove bearing will rub against the washer and the v-groove bearing will not turn.

20
Add V-Groove and Idler Sprocket Assembly to the Shaft End Gantry Side

With one (1) 3/8 x 3 inch screw, one (1) v-groove bearing, two (2) large 3/8 inch washers, two (2) thin 3/8 inch washer, one (1) #25 Idler Sprocket, and one (1) 3/8 inch nut, assemble the components as shown in the illustration. It is very important that the thin washer is between the v-groove bearing and large washer and another thin washer is between the idler sprocket and the large washer otherwise the outer race of the v-groove bearing and/or the outer race of the idler sprocket will rub against the washer and the bearing will not turn.

21
Add Idler Sprocket Assembly to Shaft End Gantry Side

With one (1) 3/8 x 2 inch screw, two (2) large 3/8 inch washers, one (1) thin 3/8 inch washer, one (1) #25 Idler Sprocket, and one (1) 3/8 inch nut, assemble the components as shown in the illustration. It is very important that the thin washer is between the idler sprocket and the large washer otherwise the outer race of the idler sprocket will rub against the washer and the sprocket will not turn.

22
Add V-Groove Bearing and Idler Sprocket to Motor Side Gantry Side

With one (1) 3/8 x 3 inch screw, one (1) v-groove bearing, two (2) large 3/8 inch washers, two (2) thin 3/8 inch washer, one (1) #25 Idler Sprocket, and one (1) 3/8 inch nut, assemble the components as shown in the illustration. It is very important that the thin washer is between the v-groove bearing and large washer and another thin washer is between the idler sprocket and the large washer otherwise the outer race of the v-groove bearing and/or the outer race of the idler sprocket will rub against the washer and the bearing will not turn.

23
Add Idler Sprocket to the Motor End Gantry Side

With one (1) 3/8 x 2 inch screw, two (2) large 3/8 inch washers, one (1) thin 3/8 inch washer, one (1) #25 Idler Sprocket, and one (1) 3/8 inch nut, assemble the components as shown in the illustration. It is very important that the thin washer is between the idler sprocket and the large washer otherwise the outer race of the idler sprocket will rub against the washer and the sprocket will not turn.

24
Add V-Groove Adjustment Screw to the Motor End Gantry Side

Insert one (1) 1/4 x 1-1/2 inch screw and cross dowel nut into the motor end gantry side. Turn the screw so that only a few threads of the screw is driven into the cross dowel nut. This will provide enough space for the upcoming v-groove assembly to be added.

25
Add Bottom Rear V-Groove Assembly to Motor End Gantry Side

With one (1) 3/8 x 2 inch screw, one (1) v-groove bearing, two (2) large 3/8 inch washers, one (1) thin 3/8 inch washer, one (1) 3/8 inch nut, assemble the components as shown in the illustration making sure that the assembly is moved to the lower portion of the opening. Make sure the assembly is snug but not tight. This will enable the assembly to move up and down within this opening. It is very important that the thin washer is between the v-groove bearing and large washer otherwise the outer race of the v-groove bearing will rub against the washer and the v-groove bearing will not turn.

26
Add V-Groove Adjustment Screw to Motor End Gantry Side

Insert one (1) 1/4 x 1-1/2 inch screw and cross dowel nut into the motor end gantry side. Turn the screw so that only a few threads of the screw is driven into the cross dowel nut. This will provide enough space for the upcoming v-groove assembly to be added.

27
Add Bottom Front V-Groove Assembly to Motor End Gantry Side

With one (1) 3/8 x 2 inch screw, one (1) v-groove bearing, two (2) large 3/8 inch washers, one (1) thin 3/8 inch washer, one (1) 3/8 inch nut, assemble the components as shown in the illustration making sure that the assembly is moved to the lower portion of the opening. Make sure the assembly is snug but not tight. This will enable the assembly to move up and down within this opening. It is very important that the thin washer is between the v-groove bearing and large washer otherwise the outer race of the v-groove bearing will rub against the washer and the v-groove bearing will not turn.

28
Add Upper Front V-Groove Bearing to Motor End Gantry Side

With one (1) 3/8 x 2 inch screw, one (1) v-groove bearing, two (2) large 3/8 inch washers, one (1) thin 3/8 inch washer, one (1) 3/8 inch nut, assemble the components as shown in the illustration. It is very important that the thin washer is between the v-groove bearing and large washer otherwise the outer race of the v-groove bearing will rub against the washer and the v-groove bearing will not turn.

29
Fasten Stepper Motor to the Motor End Gantry Side

With four (4) #8 nuts, four (4) #8 washers, four (4) #8 x 1-1/2 inch screws and one (1) stepper motor, fasten the motor to the motor end gantry side using the four (4) holes provided on the gantry side. the large hole is provided so the circular motor flange protrusion can fit allowing the motor to seat flat against the gantry side. Note the orientation of the gantry side as the motor will be fastened to the same side that the v-groove bearings are located.

30
Add Shaft, Coupling to Shaft End Gantry and Attach Gantries to the Rails on the Table.

Insert the 1/4 inch shaft into the shaft end gantry side. Slide the coupling (coupler) onto the shaft at the position shown in the illustration. Take both gantries and attach them to the x-axis rails. To tighten the v-groove bearings onto the rails, tighten the adjustment screws located at the bottom of the gantry sides. Do not over tighten these screws as the rails can be damaged as a result. Very weak finger tightening is sufficient.

31
Slide Coupling Over Both shafts

Move the gantry sides so that they are aligned side by side. Slide the rigid coupling (coupler) so that the coupling covers both the motor shaft and the extending shaft evenly. Do not tighten the rigid coupling until the gantry is completely assembled and the rails are aligned and adjusted with respect to the gantry v-groove bearings.

32
Add First Y-Axis Rail Side to the Y-Axis Rail Support Component

Assemble the y-axis rail and rail support piece using six (6) 1/4 x 1 inch screws and cross dowels. Make sure the rail support and rail are positioned on a flat surface as shown. The rail will not be flush with the rail support piece. The construction of the rail and support is done in this fashion so that the two rails will be parallel once the next rail is added. Keep the screws loose until both rails are added to the support piece and is resting on a flat surface. Orient the Y-axis support piece as shown (the counter-bored side faces down).

33
Attach Second Y-Axis Rail to the Y-Axis Rail Support Component

Assemble the second y-axis rail and rail support piece using six (6) 1/4 x 1 inch screws and cross dowels. Make sure the rail support and rail are positioned on a flat surface as shown. Once the rail is fastened, while resting on a flat surface, tighten all of the screws on both first and second rail.

34
Fasten Y-Axis Rails to Gantry Front

Take the assembled y-axis rails and support and fasten this assembly to the gantry front with five (5) 1/4 x 1-1/2 inch screws and 1/4 inch nuts. Note the orientation of the gantry front.

35
Attach Gantry Bottom to the Gantry Front

Attach the gantry bottom to the gantry front using five (5) 1/4 x 1-1/2" screws and cross dowels.

36
Attach Gantry Front, Bottom and Rail Assembly to Gantry Sides

Move the previous assembly of the gantry front/bottom and rail assembly to the ledge of the gantry sides.

37
Fasten the Shaft End Gantry Side to the Gantry Front

Loosely fasten the right side of the gantry front to the shaft end gantry side using one (1) 1/4 x 1-1/2 inch screw and cross dowel nut.

38
Fasten the Gantry Front to the Motor End Gantry Side

Loosely fasten the left side of the gantry front to the motor end gantry side using one (1) 1/4 x 1-1/2 inch screw and cross dowel nut.

39
Fasten Shaft End Gantry Side to Gantry Front

Insert two (2) cross dowel nuts into the shaft end gantry side as shown.

40
Fasten Gantry Front to Shaft End Gantry Side

Insert one (1) 1/4 x 2 inch screw in the top slot of the y-axis rail support and drive into the top cross dowel from the previous step. Insert one (1) 1/4 x 1-1/2 inch screw in the lower slot of the gantry front piece and drive into the lower cross dowel from the previous step.

41
Fasten Gantry Front to Motor End Gantry Side

Insert two (2) cross dowel nuts into the motor end gantry side as shown.

42
Fasten Gantry Front to the Motor End Gantry Side

Insert one (1) 1/4 x 2 inch through the slot located on the y-axis rail support and drive into the cross dowel from the previous step. Insert one (1) 1/2 x 1-1/2 inch screw into the lower slot located on the gantry front and drive into the cross dowel from the previous step. At the completion of this step, run the gantry up and down the x-axis rails to work the rails into a position that matches the width of the gantry. Move the gantry to the rear of the table and tighten the first screw holding the x-axis rails on both sides. Then roll the gantry to the opposite end of the table and tighten the end screws holding the x-axis rails. Roll the gantry to the midpoint of the table and tighten the x-axis screws at this position. finally, tighten all of the remaining x-axis rail screws.

43
Attach the X-Axis Drive Sprocket

Slide the drive sprocket on the stepper motor shaft. Align the drive sprocket with the lower idler sprockets as close as possible so the chain will enter and exit the sprockets harmoniously.

44
Attach Eye Bolt to Front Table End Left Side

Fasten one (1) eye bolt, one 1/4 inch washer and one (1) 1/4 inch nut to the left side of the front table end as shown. Only drive the nut a few turns so there will be enough thread to tension the roller chain.

45
Fasten Eye Bolt to Rear Table End Left Side

Fasten one (1) eye bolt, one 1/4 inch washer and one (1) 1/4 inch nut to the left side of the rear table end as shown. Only drive the nut a few turns so there will be enough thread to tension the roller chain.

46
Route the Roller Chain on the Left Side

Route the roller chain from one eye bolt, under the idler sprockets, over the drive sprocket and ending at the eye bolt at the other end along the left side of the machine.

47
Attach Roller Chain End to Eye Bolt at Front/Left Corner of the Table

Curl the roller chain into the eye of the eye bolt at the front left table end. Use two (2) #4 screws and #4 nuts to secure the curled roller chain to the eye bolt. The #4 screws will fit between the roller chain link plates.

48
Attach Roller Chain End to Eye Bolt at Rear Left side of Table

Curl the roller chain into the eye of the eye bolt at the rear left table end. Use two (2) #4 screws and #4 nuts to secure the curled roller chain to the eye bolt. The #4 screws will fit between the roller chain link plates.

49
Attach Drive Sprocket to Shaft End

Slide the drive sprocket on the shaft end. Align the drive sprocket with the lower idler sprockets as close as possible so the chain will enter and exit the sprockets harmoniously.

50
Fasten Eye Bolt to right Front of Table

Fasten one (1) eye bolt, one 1/4 inch washer and one (1) 1/4 inch nut to the right side of the front table end as shown. Only drive the nut a few turns so there will be enough thread to tension the roller chain.

51
Fasten Eye Bolt to Rear Right End of Table

Fasten one (1) eye bolt, one 1/4 inch washer and one (1) 1/4 inch nut to the right side of the rear table end as shown. Only drive the nut a few turns so there will be enough thread to tension the roller chain.

52
Rout Roller Chain Along the Right Side of the Machine

Route the roller chain from one eye bolt, under the idler sprockets, over the drive sprocket and ending at the eye bolt at the other end along the right side of the machine.

53
Secure the Chain End at the Front Right Corner

Curl the roller chain into the eye of the eye bolt at the front right table end. Use two (2) #4 screws and #4 nuts to secure the curled roller chain to the eye bolt. The #4 screws will fit between the roller chain link plates.

54
Secure the Chain at the Rear/Right Corner

Curl the roller chain into the eye of the eye bolt at the rear right table end. Use two (2) #4 screws and #4 nuts to secure the curled roller chain to the eye bolt. The #4 screws will fit between the roller chain link plates.

55
Fasten Gantry Top and Top of Y-Axis Rail Support

Fasten the top of the y-axis rail support and gantry top to the gantry front using five (5) 1/4 x 2 inch screws and cross dowels.

56
Bottom Left Y-Axis V-Groove Assembly

With the Z/Y plate in hand, assemble the Y-axis bottom left v-groove assembly in the lower left hand hole as shown. Note the orientation of the Z/Y plate and the side that the screw musts be inserted into the assembly. Use one (1) 3/8 x 3 inch screw, two (2) v-groove bearings, two (2) 3/8 inch thin washers, three (3) large 3/8 inch washers and one (1) 3/8 inch nut. Make sure the thin washer is positioned between the v-groove bearing and the large washer so the outer race does not rub against the large washer. The two large abutting washers are needed to allow for space between the y-axis rail and the screw heads that will be added in later steps.

57
Add Top Y-Axis V-Groove Bearing Adjustment Screw

Insert the 1/4 x 3 inch adjustment screw and the cross dowel into the Z/Y plate as shown. Only drive the screw into the cross dowel half way so the v-groove bearing assembly can be placed into the space below.

58
Add the Left Z and Top Y Axis V-Groove Bearings

Assemble the Y-axis top left v-groove and Z-axis top left assembly in the upper left hand slot as shown. Note the orientation of the Z/Y plate and the side that the screw musts be inserted into the assembly. Use one (1) 3/8 x 3 inch screw, two (2) v-groove bearings, two (2) 3/8 inch thin washers, three (3) large 3/8 inch washers and one (1) 3/8 inch nut. Make sure the thin washer is positioned between the v-groove bearing and the large washer so the outer race does not rub against the large washer. The two large abutting washers are needed to allow for space between the y-axis rail and the screw heads that will be added in later steps.

59
Add the Lower Right Y-Axis V-Groove Bearing Assembly

Assemble the Y-axis bottom right v-groove assembly in the lower right hand hole as shown. Note the orientation of the Z/Y plate and the side that the screw musts be inserted into the assembly. Use one (1) 3/8 x 2 inch screw, one (1) v-groove bearing, one (1) 3/8 inch thin washer, three (3) large 3/8 inch washers and one (1) 3/8 inch nut. Make sure the thin washer is positioned between the v-groove bearing and the large washer so the outer race does not rub against the large washer. The two large abutting washers are needed to allow for space between the y-axis rail and the screw heads that will be added in later steps.

60
Insert the Z-Axis Adjustment Screws

Insert two (2) 1/4 x 1-1/2 inch adjustment screws and cross dowels into the Z/Y plate as shown. Only drive the screws into the cross dowel half way so the v-groove bearing assembly can be placed into the slotted space.

61
Add the Lower Right Z-Axis V-Groove Bearing Assembly

Assemble the Z-axis bottom right v-groove assembly in the lower right hand slot as shown. Note the orientation of the Z/Y plate and the side that the screw must be inserted into the assembly. Use one (1) 3/8 x 2 inch screw, one (1) v-groove bearing, one (1) 3/8 inch thin washer, two (2) large 3/8 inch washers and one (1) 3/8 inch nut. Make sure the thin washer is positioned between the v-groove bearing and the large washer so the outer race does not rub against the large washer.

62
Attach Upper Right Z-Axis V-Groove Bearing Assembly

Assemble the Z-axis top right v-groove assembly in the lower right hand slot as shown. Note the orientation of the Z/Y plate and the side that the screw must be inserted into the assembly. Use one (1) 3/8 x 2 inch screw, one (1) v-groove bearing, one (1) 3/8 inch thin washer, two (2) large 3/8 inch washers and one (1) 3/8 inch nut. Make sure the thin washer is positioned between the v-groove bearing and the large washer so the outer race does not rub against the large washer.

63
Add Adjustment Screw for Y-Axis Top Rail

Insert the 1/4 x 1-1/2 inch adjustment screw and the cross dowel into the Z/Y plate as shown. Only drive the screw into the cross dowel half way so the v-groove bearing assembly can be placed into the space below.

64
Add Top Right Y-Rail V-Groove Bearing Assembly

Assemble the Y-axis top right v-groove assembly in the top right slot as shown. Note the orientation of the Z/Y plate and the side that the screw must be inserted into the assembly. Use one (1) 3/8 x 2 inch screw, one (1) v-groove bearing, one (1) 3/8 inch thin washer, three (3) large 3/8 inch washers and one (1) 3/8 inch nut. Make sure the thin washer is positioned between the v-groove bearing and the large washer so the outer race does not rub against the large washer.

65
Slide Z/Y Plate Assembly on the Y-Axis Rails

Slide the Z/Y Plate Assembly onto the Y-axis rails as shown. Make sure the top adjustment screws are loose so the v-groove bearings have sufficient distance from each other to fit on the y-axis rails. Once on the rails, gently tighten the adjustment screws so the top v-groove bearings are compressed against the rails snugly. The plate assembly should be able to easily run back and forth along the y-axis rails with no play.

66
Insert Motor Mount Screws into Z/Y Plate

Insert four (4) 3/8 x 3 inch screws into the holes shown on the Z/Y plate and adhere these screws into position with four (4) 3/8 inch nuts. The holes may be slightly smaller than the major screw diameter, so the screws may need to be driven into these holes.

67
Fasten Right Z-Axis Rail to Z-Axis Rail Support

Fasten Z-axis right hand rail to the Z-axis rail support piece. Use five (5) 1/4 x 1 inch screws and cross dowel nuts. Note the orientation of the z-axis rail support piece.

68
Fasten Left Z-Axis Rail to Z-Axis Rail Support

Fasten Z-axis left hand rail to the Z-axis rail support piece. Use five (5) 1/4 x 1 inch screws and cross dowel nuts. Note the orientation of the z-axis rail support piece.

69
Fasten Middle Spindle Mount

Fasten the middle spindle mount to the z-axis rail support piece. Note the orientation of the rail support. Use two (2) 1/4 x 1-1/2 inch screws and cross dowel nuts. If the router mount was selected and not a spindle mount, this will serve as the top router mount.

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Secure Z-Axis Stepping Motor

Secure the Z-axis stepper motor to the mount as shown. Use four (4) #8 x 1-1/2 inch screws, four (4) #8 washers and four (4) #8 nuts. Do not tighten completely as the motor position will need to be adjusted to align with the coupling (coupler) and lead screw assembly.

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Add Z-Axis Flexible Coupling Assembly

Slide the flexible coupler assembly which consists of one (1) 1/4 inch ID (inside diameter) coupling hub, one (1) coupling spider (rubber component) and one (1) 1/2 inch ID coupling hub. Do not tighten the set screws until the other components for the lead screw are assembled.

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Insert Bearing into Top Spindle Mount

Insert one (1) 1/2 inch ID (inside diameter) bearing into the bearing seat of the top spindle mount. Rest one (1) 1/2 inch ID thin washer on top of the bearing to protect the outer race of the bearing from interfering with the upcoming collar.. If the router mount was selected, this piece will not appear as a mount, but appear as a piece with a bearing seat with two cross dowel holes.

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Fasten Top Spindle Mount to the Z-Axis Rail Support

Fasten the top spindle mount to the Z-axis rail support as shown using two (2) 1/4 x 1-1/2 inch screws and cross dowels.

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Add Z-Axis Collar, Bearing and Washer for Lead Screw

In preparation for mounting the lead screw, position one (1) 1/2 inch ID (inside diameter), one (1) 1/2 inch ID bearing and one (1) 1/2 inch ID bearing as shown. The collar will rest on top of the top bearing/washer that is seated in the top spindle mount. The bearing and washer below will rest on top of the flexible coupler.

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Insert Lead Screw into Anti-Backlash Nut

Insert the lead screw into the anti-backlash nut as shown. It is critical that the lead screw is driven into the anti-backlash nut from the top of the nut and not from the bottom of the nut. The alignment of the lead screw will be more successful if installed in this way. The anti-backlash assembly has a nut that is flexible, a spring that pushes a bushing up to squeeze the flexible portion of the nut. Important: depress the bushing of the anti-backlash nut downward so the flexible portion of the nut is opened enough to allow the screw to be inserted relatively easily. Make sure the screw is as aligned with the nut as well as possible to prevent the thread of the lead screw from catching the incorrect thread in the nut.

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Insert Lead Screw Assembly into the Z-Axis Assembly

Insert the lead screw through the anti-backlash nut support piece and then through the collar, washer, bearings and into the flexible coupling. Note the orientation of the anti-backlash nut support piece. Tighten the flexible coupling set screws at the motor shaft hub and the lead screw hub.

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Insert Spindle/Router Mount Tightening Hardware

Insert the spindle/router mount tightening screws. Use two (2) 1/4 x 3 inch screws, four (4) 1/4 ID (inside diameter) washers and two (2) 1/4 inch nuts.

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Add Lower Router/Spindle Mount Tightening Hardware

Add the router/spindle tightening hardware one (1) 1/4 x 3 inch screw, two (2) 1/4 ID (inside diameter) washers and one (1) 1/4 inch nut to the lower spindle/router mount. Get this assembly ready for mounting to the z-axis assembly.

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Fasten Lower Spindle/Router Mount to Z-Axis Assembly

Fasten the lower spindle/router mount to the z-axis assembly. Use two (2) 1/4 x 1-1/2 inch screw and cross dowels.

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Fasten Dust Shoe to the Lower Spindle/Router Mount

Insert two (2) 1/4 inch nut inserts into the bottom of the dust shoe. Insert the two (2) 1/4 inch thumb screws into the top of the lower spindle/router mount. Drive the thumb screws into the nut inserts as shown.

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Insert the Z-Axis Assembly into the Machine

Slide the complete z-axis assembly between the z-z-axis v-groove bearings as shown. Make sure the v-groove adjustment screws are driven back as far as possible so the v-grove bearings are at the maximum distance apart. Once the assembly is completely between the bearings, gently tighten the adjustment screws. Do not over tighten these adjustment screws as the rails will be damaged. The adjustment screws that push the bearings toward the rail contains a lot of torque so proceed with caution.

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Attach the Anti-Backlash Support to the Z/Y Plate

Fasten the Z-axis anti-backlash nut support piece to the Z/Y plate as shown. Use two (2) 1/4 x 1-1/2 inch screws and cross dowels.

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Fasten Anti-Backlash Nut to the Anti-Backlash Nut Support

Loosely fasten the anti-backlash nut to the anti-backlash nut support piece with two (2) #8 x 1-1/2 inch screws, two (2) #8 washers and two (2) #8 nuts. Keep an eye on the vertical alignment of the lead screw assembly. The lead screw should be as parallel as possible with the z-axis. To insure this, after loosely fastening the hardware mentioned for this step, by hand, drive the lead screw as far up the anti-backlash nut as possible where the collar will almost touch the anti-backlash nut support. Check the vertical level of the lead screw above the anti-backlash nut with respect to the z-axis assembly and tighten the #8 hardware.

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Y-Axis Right Chain Mount Preparation

Prepare the Y-axis right chain mount for fastening as shown. Note the orientation of the mount.

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Begin Fastening the Y-Axis Right Chain Mount

Using one (1) 1/4 x 1-1/2 inch screw, one (1) 1/4 washer and one (1) cross dowel, fasten the left side of the y-axis right chain mount. Keep this loosely fastened so the height can be adjusted later.

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Complete Attaching the Y-Axis Right Chain Mount

Fasten the remaining two (2) 1/4 x 1-1/2 inch screws, two (2) 1/4 inch washers and cross dowels for the Y-axis right chain mount. Keep these loosely fastened for height adjustment later.

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Attach Eye Bolt to Y-Axis Right Chain Mount

Insert one (1) eye bolt, one (1) 1/4 inch washer and one (1) 1/4 nut as shown. Drive the eye bolt into the nut only slightly so there will be sufficient threads available to tension the roller chain.

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Begin Fastening Y-Axis Left Chain Mount

Fasten the left side of the Y-axis left chain mount using two (2) 1/4 x 1-1/2 inch screws, two (2) 1/4 inch washers and two (2) cross dowels. Keep these loosely fastened for later height adjustment.

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Finish Fastening the Y-Axis Left Chain Mount

Finish loosely fastening the Y-axis left chain mount with one (1) 1/4 x 1-1/2 inch screw, one (1) 1/4 washer and one (1) cross dowel.

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Attach Eye Bolt for Y-Axis Left Chain Mount

Insert one (1) eye bolt, one (1) 1/4 inch washer and one (1) 1/4 nut as shown. Drive the eye bolt into the nut only slightly so there will be sufficient threads available to tension the roller chain.

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Add Y-Axis Idler Sprocket

Slide one (1) #25 idler sprocket onto the 3/8 inch screw as shown. This idler sprocket will not be fastened into place as this sprocket will be free to move side to side so chain alignment can always be autocorrected.

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Add Back Motor Mount Support Nuts

Drive three (3) 3/8 inch nuts to the 3/8 inch screws as shown. Drive these nuts all the way to the existing nuts, but do not tighten as they will be used to tighten against the motor mount support.

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Connect Y-Axis Motor to Y-Axis Motor Mount Support

Drive one (1) #8 nut insert into the Y-axis motor mount support as shown. Take the motor and one (1) #8 x 1 inch screw and fasten the motor in place. Keep this loosely tightened until all of the other mounting screws are fastened.

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Complete the Fastening of the Y-Axis Motor to the Y-Axis Motor Mount Support

Fasten the remaining three (3) #8 x 1-1/2 inch screws, three (3) #8 washers and three (3) #8 nuts as shown. Note the direction that the screws are inserted and the placement of the nuts.

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Add Drive Sprocket to the Y-Axis Motor Shaft

Insert the drive sprocket to the shaft of the Y-axis motor. Keep the set screws loose until the mount is fastened and aligned on the machine so that the drive sprocket can be aligned with the idler sprocket and chain.

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Slide Motor Mount Assembly onto Machine

Slide the motor and motor mount assembly onto the machine as shown. Try to keep the motor mount as parallel as possible to the Z/Y plate in both top and side perspectives.

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Completely Fasten the Y-Axis Motor Mount Assembly

Complete the installation of the Y-axis motor mount assembly by adding four (4) 3/8 inch nuts against the back of the motor mount. Tighten the nuts from the previous step against the mount keeping the mount parallel to the Z/Y plate. Bring the mount assembly as close as possible to the Z/Y plate without binding the idler sprocket.

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Add the Y-Axis Roller Chain

Route the Y-axis roller chain over the top of the idler sprocket and then back around to the drive sprocket as shown.

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Secure the Y-Axis High Side of Roller Chain

Curl the roller chain into the eye of the eye bolt at the high end of the Y-axis. Use two (2) #4 screws and #4 nuts to secure the curled roller chain to the eye bolt. The #4 screws will fit between the roller chain link plates.

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Secure the Roller Chain on the Low Side of the Y-Axis

Curl the roller chain into the eye of the eye bolt at the low end of the Y-axis. Use two (2) #4 screws and #4 nuts to secure the curled roller chain to the eye bolt. The #4 screws will fit between the roller chain link plates.

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Insert the Spindle/Router into Machine

Insert an end mill into the spindle or router. Slide the spindle or router into the mounts and tighten the mounts. Keep an eye on where the end mill is located during this process. If the z-axis assembly is low, then there is a possibility that the end mill will hit the table damaging the table, or the end mill.

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Fasten Top of Gantry Back

Tighten all of the components within the gantry cavity including the rigid coupling, any hardware associated with the gantry. Run the motor wires out of the top corner of the gantry and attach the gantry back. Clip or tape the motor wires so the motor wires don't find their way back into the gantry cavity. To begin attaching the gantry back, use five (5) 1/4 x 1-1/2 inch screws and cross dowels. Important: Keep these screws loose and to assist the cross dowel position, use a magnet above the cross dowel while driving the screw into the cross dowel. If a cross dowel falls into the gantry cavity, the machine can be tipped so the cross dowel can roll out of the cavity.

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Fasten Gantry Back at Left Side of Machine

Fasten the gantry back at the left side of the machine using two (2) 1/4 x 1-1/2 inch screws and cross dowels. Keep these loosely fastened.

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Fasten the Gantry Back at the right Side of the Machine

Fasten the gantry back at the right side of the machine using two (2) 1/4 x 1-1/2 inch screws and cross dowels. Keep these loosely fastened.

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Fasten Gantry Back to Right Gantry Side

Fasten the gantry back to the right gantry side as shown. Use one (1) 1/4 x 1-1/2 inch screw and cross dowel nut.

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Fasten the Gantry Back to the Left Gantry Side

Fasten the gantry back to the right gantry side as shown. Use one (1) 1/4 x 1-1/2 inch screw and cross dowel nut.

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Fasten Lower Portion of the Gantry Back

Loosely fasten the final five (5) 1/4 x 1-1/2 inch screws and cross dowels. Once the screws are all loosely fastened, tighten all of the screws associated with the steps for the gantry back. This is a good time to check the entire machine for any play and adjust as necessary. Once this is complete, tension the roller chain for the X-axis and Y-axis. The deflection for the roller chain should not be more than 1/2 inch with light pressure pushing down or raising the roller chain from a midpoint. Check the machine for square by moving the axes along a square and adjust the eye bolts as necessary to get the machine perfectly square with respect to the X and Y axes.

Congratulations! You have just completed assembling a very complex machine and this is an exceptional achievement. To connect and wire the electronics, please follow the videos for wiring the electronics here.

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YouTube

The following videos provide a bit of information on the machine and also serve as the assembly instructions for the initial version of the machine. It is recommended that all of these videos be viewed prior to purchasing and/or assembling the machine. This kit can be assembled by customers of varying levels of ability and this kit will take a minimum of 4 hours of total assembly (not including electronics) with a moderate level of experience (experience relates to general handyman skills of putting together mechanical fasteners, handling general tools, and understanding the ins-and-outs of parts and tools shown in the video).

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YouTube

Assembling the table ribs, table ends and x-axis rails. The table is assembled which includes the bed of the table, the ribs underneath to reinforce the bed, the ends of the table and the x-axis rails on both sides of the table.

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YouTube

Attaching the Gantry Sides to the Table Rails. The gantry sides are outfitted with the v-groove bearings and sprockets for attaching onto the table rails.

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YouTube

Assembling the y-axis rails and gantry bridge. The gantry bridge is attached to the y-axis rail support and the rails are installed. The x-axis rails are also tightened.

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YouTube

Attaching the Gantry Supports and Preparing the Z/Y Plate. The top and bottom gantry supports are attached to the back of the front gantry bridge. The Z?Y plate is prepared by fastening the v-groove bearings that will ride on the y-axis rails and hold the z-axis rail assembly.

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YouTube

Adding the Nut Mount, Y-axis Motor Mount and Chain Mounts. The anti-backlash nut mount is attached to the Z/Y Plate, the Y-axis Motor Mount and Y-Axis Idler

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YouTube

Putting Together the Z-Axis Assembly and Attaching it to the Z/Y Plate. All of the parts that make up the z-axis assembly including rail support, motor mount and router mounts are assembled together. The assembly is then put between the v-groove bearings for the z-axis and the lead screw assembly is added.

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YouTube

Mounting the X and Y motors and Roller Chains. The remaining motors and related mechanics will be added to the machine. This includes, mounting the motors X and Y motors, adding the drive sprocket to each of the motors, adding the roller chain (2 for the x axis and 1 for the y axis), and adding the shaft extension to the back of the X axis motor to hold the drive sprocket at the other end.

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YouTube

Adding the Back-Plate. The back-plate of the gantry is added to the machine.

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Additional Information:

If you find that the sprockets are slipping on the x-axis 1/4" rods, make sure to file a flat so the set screw can seat well.

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