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### Question #: 3467

Question: Having issues with my cnc router constructed with your materials.

Current Solution

Used your electronics package and chain drive materials to construct personal design cnc to fit my floor space.

Machine is calibrated with a precision six foot steel scale at 30” measurement. When cutting a test program of a rectangle 6” x 12” the final cut dimensions are:
X = 5.946 (-.054) short and Y = 11.900 (-.100) short.
This is a chain drive machine using your small chain stock.
Can chain tension be part of the issue or am I missing something????

will be traveling to San Antoine this pm but will try to answer any follow up question after the first of the year.

Happy New Year to all.

Best regards.
Marc

Respond:

### Other Possible Solutions to this Question

• Having issues with my cnc router constructed with your materials.

Used your electronics package and chain drive materials to construct personal design cnc to fit my floor space.

Machine is calibrated with a precision six foot steel scale at 30” measurement. When cutting a test program of a rectangle 6” x 12” the final cut dimensions are:
X = 5.946 (-.054) short and Y = 11.900 (-.100) short.
This is a chain drive machine using your small chain stock.
Can chain tension be part of the issue or am I missing something????

will be traveling to San Antoine this pm but will try to answer any follow up question after the first of the year.

Happy New Year to all.

Best regards.
Marc

Having issues with my cnc router constructed with your materials.

• list of materials for build your own cnc

Are you referring to the book build?

yes

Yes

list of materials for build your own cnc

• My CNC router stopped in the middle of a job with mach3.

Dealing with a mid-stop cut via Mach3, you will have to be careful if it is intentionally or unintentional. If you desire to stop your machine while in the middle of a cut be sure to stop it when the machine is moving in an upward motion on the z-axis and the X/Y-axis are stationary. Then you can choose the point (G-code) where the machine was left off and click on the Run from here button on the Program Run screen (left hand side) right above the Reset button.
(Make sure spindle/router is running before hand!)

Now if the machine stops unintentionally, and was moving in either the X/Y-axis, then it will be difficult to run the machine from the original point dealing with the coordinates might have been lost due the the machine continuing motion but via Mach3 the machine has stopped.

If this occurs to fight this issue before hand, is marking your home with the spindle/router to make a hole were your home is. Although moving it manually back to home the machine can be off by the smallest amount and could cause an inconsistent cut. If accuracy is something that can not be risked, then you can home the machine about a 1/4" or 1/2" down from the original home to start your cut on the same material but loosing that small piece.

My typical go to solution is:

- Note the current g-code line where the machine stopped.
- If Mach3 errored and you cannot control the machine, Exit Mach3 - you may find that reset, stop does nothing to stop the spindle. When you exit mach3, the spindle will stop automatically.
- Restart Mach3. The DRO (Digital Readout) should show the correct coordinates where the machine position was before exiting Mach3.
- Scroll to the g-code line where the machine stopped. You may need to go a few lines prior to make sure you are not skipping any machining operations (which is why it is a good idea to learn the basics of g-code - don't worry, it's easy)
- Click on the "Run from Here" button.
- Mach3 will present you with a "Preparation Move" dialog box with the location that it will move to. If the coordinates shows a position that is into the material, make sure to specify a rapid height (clearance height) so the machine will move up first and then move to the location before moving down into the material. If the spindle is automatically controlled by Mach3, make sure to check the turn spindle on checkbox. If not, make sure the router or spindle is on before clicking OK.

My cnc router stops at gcode line 50,000 and cannot finish program. They are about 150k of lines total. I have Mach3 and have bought the additional line capability. Is 50,000 (or around that) the limit? Is Mach 4 hobby license better and in what ways? Thanks! Mike Huber

If you have a license for Mach3, then you should be able to run g-code indefinitely. I think there is something else going on.

My CNC router stopped in the middle of a job with mach3.

• Can I use your USB interface board and Mach4 on my 3 axis CNC router?

The USB interface that we sell only works with planet-cnc software. We will be developing our own USB board and plug-in that will work with Mach4 very soon.

does the mach3 usb interface board work with mach4?

Can I use your USB interface board and Mach4 on my 3 axis CNC router?

• Can I use your USB interface board and Mach3 on my 3 axis CNC router?

Planet-CNC is the control software. If you decide to use the USB controller, you will need to use the planet-CNC software as the control software. You will be able to use any of the CAM software applications with the planet-CNC control software.

Can I use your USB interface board and Mach3 on my 3 axis CNC router?

• Would any of your CNC laser machines be appropriate for welding of thermoplastic materials?

That is a good question. We have not tried to weld thermoplastics using our CO2 Lasers. It is possible since the laser outputs a heat source and at the right intensity and speed, the thermoplastic can be heated and melted rather than instantaneously vaporized and off gassed. I have done research to see if CO2 laser can weld thermoplastics with positive results.

Our CO2 lasers are typical of other laser cutters on the market, so if their literature, or examples you have found, successfully weld thermoplastics, then ours will probably be able to as well.

In some cutting test with different speeds and intensities, the kerf has welded back together; however, this was caused by an unintentional process rather than an intentional one.

Would any of your CNC laser machines be appropriate for welding of thermoplastic materials?

• Would any of your CNC laser machines be appropriate for welding of thermoplastic materials?

That is a good question. We have not tried to weld thermoplastics using our CO2 Lasers. It is possible since the laser outputs a heat source and at the right intensity and speed, the thermoplastic can be heated and melted rather than instantaneously vaporized and off gassed. I have done research to see if CO2 laser can weld thermoplastics with positive results.

Our CO2 lasers are typical of other laser cutters on the market, so if their literature, or examples you have found, successfully weld thermoplastics, then ours will probably be able to as well.

In some cutting test with different speeds and intensities, the kerf has welded back together; however, this was caused by an unintentional process rather than an intentional one.

Would any of your CNC laser machines be appropriate for welding of thermoplastic materials?

• Can I put a laser on my cnc router that I didn't purchase from buildyourcnc?

We don't have a laser kit to retrofit another CNC router other than ours, but we can create one. Some things that may help:

- You are located close to use so we can work closely with you to implement to retrofit,
- or you can provide very detailed drawings or measurements so we can use them to create the necessary parts for the kit.

Other things that you need to understand:

- A laser has a number of parts that will bulk up the head of the CNC router causing a bit more inertia which may require lowering the acceleration for smooth ramping up and down of the velocity

- The bulk of the parts required for the laser may restrict the travel of the x and/or y axes.

- The nozzle of the laser will be offset from the end mill of the spindle.

Can you tell me the brand of the CNC router that you would like to stick a laser on? (you can answer by submitting additional information.

Can I put a laser on my cnc router that I didn't purchase from buildyourcnc?

• Do you have any machine with 4th axis that mills hard materials like steel?

We currently do not have a 4th axis machine, but have a 4th axis available. We are in the process of developing a 4th axis kit, you can see the available R&D projects here(https://www.buildyourcnc.com/ResDev.aspx).

Do you have any machine with 4th axis that mills hard materials like steel?

• What is your largest format cnc router

The largest CNC machine we make at this time (12/04/2015) is the GreenBull 6'x12' model. This model has 2 options for Z-axis travel.

The short-z option has a total Z travel of 5.75 inches. From that you would subtract the length of the end mill used and the thickness of the spoil board to determine the maximum material thickness. (Example: If the end mill extends 1.25" from the collet and the spoil board is .75", then the material could be up to 5.75 - 1.25 - 0.75 = 3.75 inches in thickness). This is good for most sheet-type materials.

The long-z option, used mainly for large 3D carvings, requires a custom frame and allows for up to 36" of travel.

What is your largest format cnc router

• What is the bill of materials included in the build your own laser 2' x 4' 40 watt

The general bill of materials for the blackTooth 24"x20" laser system is as follows:

- The structural components (MDO and Plastic parts)
- The hardware to assemble all of the structural and mechanical parts
- Mechanical parts like v-groove bearings, bearings for shafts, shafts, pulleys, belts, etc.
- All of the motion electronics like motors, drivers, and laser controller
- Wire to connect all of the electronics
- All of the laser components including the laser tube, mirrors, mirror mounts, nozzle and lens
- Pneumatic components including the air pump and tubing
- Hydraulic components to cool the laser tube including a water pump and tubing

blackTooth 24"x20" Laser

What is the bill of materials included in the build your own laser 2' x 4' 40 watt

• How complete are your cnc router kits?

Our kits include all of the parts needed to put a whole working machine together. However, understand that the kits are quite advanced and require a good level of mechanical competence to be completed correctly. We offer assembled machines for those that can't assemble these machines due to their complexity and need for fastening the overall components in a way that there is good smooth and tight motion, minimizing backlash to the fullest.

We do have a few kits that you need to supply the table which include the greenBull 4x,5x and 6x, and the blackFoot. The tables would be far to large and heavy to ship. Our greenBull Kit is our best selling machine. All of the other machines are all inclusive.

How complete are your cnc router kits?

• I'm looking to upgrade my X-Carve with one of your vfd spindles, can you reccomend which one to use to replace the dewalt 611 router?

If you would like to replace a router that outputs a relatively low HP (horse power) such as the Bosch PR20EVSK or Dewalt 611, both having about 1-1.25 HP, the 1.5kW spindle would have more than enough power and will also provide constant torque where the routers are unable to achieve. The 1.5kW spindle outputs 2 HP and is water cooled to keep the dust out of the air!

• HAVE PORTER CABLE 7518 ROUTER ON MY CNC AND WOULD LIKE TO KNOW IF YOUR ER20 COLLET NUT, FOR THE CABLE, WILL FIT ROUTER.

Yes, our porter cable collets and nuts will fit the porter cable 7518.

• Is the 4kv spindle constructed using two or four bearings and what size collets are included with the spindle/vfd combo?

Yes, all of the spindles come with collets. The collets have a 1/4" (6.35mm) bore for end mills that have a 1/4" shank. The ER specification is different for the 1.5kW (ER-11) and the 2.2kW (ER-20).

• Will your basic 3 axis cnc component kit be compatible to run a regular bosch mini router?

The Bosch mini router is a very capable router and can be used with our electronics, and machines.

Will your basic 3 axis cnc component kit be compatible to run a regular bosch mini router?

• Can a CO2 CNC laser machine be used for welding of thermoplastic materials?

That is a good question. We have not tried to weld thermoplastics using our CO2 Lasers. It is possible since the laser outputs a heat source and at the right intensity and speed, the thermoplastic can be heated and melted rather than instantaneously vaporized and off gassed. I have done research to see if CO2 laser can weld thermoplastics with positive results.

Our CO2 lasers are typical of other laser cutters on the market, so if their literature, or examples you have found, successfully weld thermoplastics, then ours will probably be able to as well.

In some cutting test with different speeds and intensities, the kerf has welded back together; however, this was caused by an unintentional process rather than an intentional one.

Can a CO2 CNC laser machine be used for welding of thermoplastic materials?

• Requirement of laser cutting CNC Router having working area: 100cm x 100cm x 300cm, Belt driven motion, servo motor controller

This is an open ended question to which there could be many possible answers.

The requirement of a laser cutter is having a laser with enough energy output to cut the intended material. Generally, the laser function is not tied to the working area unless the laser tube is stationary, where the farther the beam has to travel, the less energy results at the intended area (on the surface of the material).

We don't use servo motors here. Rather, we use precision stepping motors instead.
https://buildyourcnc.com/category/nema

We do offer timing belts.
https://buildyourcnc.com/category/pulley

Our blackTooth Laser Cutter:
https://buildyourcnc.com/blackToothLaserCutterAndEngraver.aspx

The CNC Machine: https://buildyourcnc.com/greenBullCNCMachineKit.aspx

• Is the 4kv spindle constructed using two or four bearings?

We are posing that question with the supplier. The information will be provided shortly.

The 4.0 kW spindle has 4 bearings. Tow of them are 7005C and the other two are 7003C

Is the 4kv spindle constructed using two or four bearings?

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