Select the desired rail here:
https://buildyourcnc.com/Item/mechanical-rails-HIWIN-Linear

On the product page, enter the total "cut to order" length (in inches). Then call us to specify the cut lengths. Remember that our maximum length is 2000mm or 78.74 inches.

Our phone number is located at the top right of each web page by hovering over the "Need Help?".

Click the link to add information to this solution:
how do I order multiple lengths of HIWIN guide rail with blocks?

if you didn’t already, send an email with the cut lengths of the lead screw. If you did, then they will make sure to confirm before sending.

The email to send the cut lengths:
Phdroboticsllc@gmail.com or customerservice@buildyourcnc.com

Click the link to add information to this solution:
Hi, I ordered some threaded rod yesterday and I wanted to verify the cut lengths.

When buying any of our ACME screws, if the entire length or lengths is desired please send us an email or a call, to specify the actual length needed! But if no call or email is sent previous of the order then, we will give the customer a call or email to find the exact lengths that they will require.

Click the link to add information to this solution:
I have just purchased 95 in. of 1/2 in screw and I need it cut to different lengths 51" 30" 14". Can do?

The roller chain lengths for the greenBull 4x is:
- 13 feet for each side of the X axis (total of 26 feet), and
- 6 feet for the Y-axis

Click the link to add information to this solution:
WHAT LENGTHS OF ROLLER CHAIN DO I USE FOR THE GREENBULL 4X CNC?

Just specify the full length in the quantity field in the shopping cart and give us a call to inform us of the cut lengths (you can also email customer service - link in the contact us page - link at the footer). We are working on a way to do this at the product page, but won't be finished for a few more days.

Additional Information:
20

Click the link to add information to this solution:
How do I order specific lengths of lead screws in one order?

That is difficult to tell at this time. Right when we get them in, they go fast. These items come from China and the units are shipped in via freight on ship, so there are many factors on the delivery such as weather.

Click the link to add information to this solution:
When will the 2000 mm HIWIN Spec Linear Guide rail be available?

The apply a machining operation that cuts along the inside of a polygon, you will need to use the profile machining operation located at the top of the user interface, the first icon in red to the left. Hovering over the icons will inform you of what machining operation the icon represents.

Select the polygon and click on the profile icon. A new profile operation will be created in the left drawing pane (outline of machining operations). Underneath the drawing pane, there is another pane with parameters for the profile listed. Find the Inside/Outside parameter and click just right of that parameter to change the setting to inside.

Click the link to add information to this solution:
How do I cut on the inside of a polygon using CAMBAM?

We sell HIWIN rail and Linear guide rail by the inch (cut to size) as well as the blocks individually.

Click the link to add information to this solution:
I need a guide rail 15mm X 100mm yours is 2000mm or 2 meter, do we cut the rail to size? do you sell the block separetly?

No they will not come in that length as a default, we would contact the buyer to ask specific lengths due to the total length purchased.

However if you order the 1/2" lead screw we can get them cut to the specific length you require, by contacting us here or call us at 281-815-7701.

Click the link to add information to this solution:
If I order 19ft of the 1/2" lead screw will it come in three 6'5" lengths by default? This is what I need. Thanks

The 20 mm linear guide rails have a hole distance from center to center of 60 mm.
The 20 mm round rails have a hole distance from center to center of 150 mm.

Click the link to add information to this solution:
Can anyone tell my the exact center to center mounting hole distance on the 20mm linear guide rails? I have done some measuring but I am afraid they vary.

You can see the component list on the hardware and plans machine (scratch build machine) since it is the same machine in the book:

https://www.buildyourcnc.com/Item/cnc-machine-scratchbuild

Additional Information:

Click the link to add information to this solution:
How do I download the MDF Plans and cut List PDF file please

Use a clamping collar (if you are using an ACME lead screw) or a couple of 1/2 nuts (if using an allthread) against the bearing to keep the bearing in place and make sure there is no axial play.

Click the link to add information to this solution:
How do I secure the non-motor end of the lead screw for my 'Book' machine build? Does it just sit inside the bearing or do i use a nut to lock it in place? I did not see any instructions for this in the book.

Our SBR20 rails use M8 bolts and are suitable for use with 8020 aluminum or any other common machine material. We suggest the use of our ball bearing pillow blocks with these rails, which you can find on our website here: https://buildyourcnc.com/item/mechanical-rails-linear-ball-bearing-block

Additional Information:
HOW TO FIND WIDH 38 HEIGHT 26 LINER GUIDE RAIL

Click the link to add information to this solution:
What are the hole spacing dimensions for the Linear Guide Rail 20mm? I'm trying to figure out what size aluminum extrusion to purchase so I can mount these to it.

There are two main questions that we can answer with respect to motor torque and the mechanical advantage of lead screws, 1) What torque motor do you need to lift a particular weight, or 2) What maximum weight will my motor torque be able to lift.

This formula uses Newtons (N) as it's final unit. Use this with the included radius (R) to determine the torque. Newtons can easily be converted to lbs or ounces using online conversions.

Effort = Sf + (Load/(2 x pi x (R/p) x Se))

where:
p = pitch of the screw
Se = screw efficiency = Standard lead screw will be between 20% (.2) and 40% (.4)
Sf = static force. This is the force that is needed to start the movement. The number may be eliminated, but it is good to use a number in the 5 N to 20 N range.
Load = the expected load that the effort will need to carry (i.e., the router and the included axis assembly that the motor will need to lift)
R = radius of the lead screw


This formula is based on the "law of the machine"

The final effort amount with its unit of newtons and R will be the torque. For example, if the effort comes to 100 N (newtons) and the R is .5 inches, then you can assume that the effort is 50 N-in since it would take twice the effort to turn form the one inch mark from the center of the shaft.

Example:

Load = 90 N (20.2 lbs)
R = 1 inch since that is the length from the center of the shaft that the motor is rated
p = 1 inch / 13 = .08 inches

Effort = 5 N + (90 N / (2 x 3.14 x (1 / .08) x .2))
Effort = 5 N + (90 N / (6.28 x 12.5 x .2))
Effort = 5 N + (90 N / (15.7))
Effort = 5 N + (5.73 N)
Effort = 10.7 N = 2.4 lbs = 38.4 oz-in

I am putting the oz-in on the end because the formula considers the distance from the center of the shaft to be one inch.

Therefore, a 425 oz-in motor would be able to lift a 20.2 lb Router with its accompanying assembly. If the assembly and router is heavier, plug in the numbers and determine the effort required.

With a bit of algebra, the formula can be rewritten to find the load:

Load = (Effort - Sf) x (2 x pi x (R/p) x Se)

Another formula that does not consider friction at all:

Effort = (Load x p) / (2 x pi x R)

Lets see if we get similar results:

Effort = (20 lb x .08 inches) / (2 x 3.14 x 1)
Effort = 1.6 / 6.28 = .255 lbs = 4.08 oz-in

The results from both formulas appear to be very small because a 13 TPI screw will have enormous mechanical advantage.

It is evident that the first formula that does consider friction that we are loosely estimating is far more conservative than the second formula. Either way, even the most conservative formula shows that the 425 oz-in motor will handle very large weights. If you are using a lead screw with only two turns per inch, .5 inch pitch, you can determine the requirements with the first formula.

Example for a 10 TPI 5 start (2 turns per inch) lead screw:

Load = 90 N (20.2 lbs)
R = 1 inch since that is the length from the center of the shaft that the motor is rated
p = 1 inch / 2 = .5 inches

Effort = 5 N + (90 N / (2 x 3.14 x (1 / .5) x .2))
Effort = 5 N + (90 N / (6.28 x 2 x .2))
Effort = 5 N + (90 N / (2.512))
Effort = 5 N + (35.83 N)
Effort = 40.828 N = 9.18 lbs = 146.88 oz-in

Customer Response:
thank you so much

Additional Information:


Additional Information:


Additional Information:
how do i calculate torque of stepper motor if lead screw coupled to motor shaft and load applied by lead screw on plate is 100 kg by vertically

Additional Information:
Pls


Additional Information:
1m 16mmdiameter ball screws calculations


Additional Information:
What is the max load that 2 NEMA 17 stepper motors (spaced 2 feet apart, both will be pushing up on the same gantry) can lift while using a rod with the following specifications T8 OD 8mm Pitch 2mm Lead 4mm for each motor.

Additional Information:


Additional Information:
1

Click the link to add information to this solution:
HOW DO I DETERMINE THE AMOUNT OF SCREW WEIGTH THAT MY MOTOR CAN HANDLE

Prices on amazon are fixed costs for shipping. The website generally reports high costs for international shipments but we can give you a better quote if you care to email sales@buildyourcnc.com

Click the link to add information to this solution:
I want to order 8 HIWIN Linear Guide Blocks. Is there a cheaper shipping option? $70 is too much for something that weighs less than 5 lbs. I live in the continental US

It is not necessary to connect the spindle VFD (Variable Frequency Drive also called an Inverter) to the computer or CNC motion electronics. The VFD can be controlled independently using the control panel on the VFD. The control panel has the ability to control all aspects of the spindle including Speed, Torque, limits, etc. However, you can connect the VFD to the computer so the CNC control program can control the spindle during the CNC Machine operation. You will need to connect the VFD to the computer via a serial conection (in this case, it is the RS-485 protocol).

The following are instructions on how to connect the VFD to Mach3 via this RS-485 serial connection.

The first thing you will need is the dynamic link library to pair with mach3 called the Huanyang VFD Mach3 PlugIn. You can find this file at the mach3 support forum here: http://www.machsupport.com/forum/index.php/topic,14182.0.html

You will also need to download the Microsoft .net 3.5 framework and install it: https://www.microsoft.com/en-us/download/details.aspx?id=21

Follow the pdf that comes with the library file, but here is a synopsis of what you need to do (I also added a lot more information that may be useful during this process as the manual does not cover the main connections that need to be done):

You will need to program your VFD so that it knows how to communicate with mach3 and the computer (go into the programming mode of the VFD and change these parameters):
- PD001 - value 2 - Enables with communication aspect of the VFD
- PD002 - value 2 - Enables frequency control from the communcations port
- PD163 - value 1 - VFD address
- PD164 - value 1 - Baud rate of 9600 (speed of the communication)
- PD165 - value 3 - 8N1 RTU - 8 bits (that's the size of the word that gets communicated), N (No parity or no error checking) and 1 (1 stop bit)

Copy the dll file to the PlugIns folder of mach3.

Connect the RX and TX lines to your computer. There are a couple ways you can do this, but the recommended way would be to use an FTDI USB device which converts a USB to a serial com port. The device will have Rx and Tx connectors to connect to the VFD terminals with the same labels. This method is recommended since serial ports are not as common in computers these days.

Next, you will need to configure mach3 to use the plugin library. Start mach3 and click on Menu -> config ->Config Plugins. Enable the new plugin by clicking on the red cross on the left column next to the plug in. Restart mach3 after doing this.

No you need to configure mach3 to use the HuanyangVFD plugin. Go to the ports & pins configuration and select the spindle setup tab. Make sure that the Disable Spindle Relays checkbox is unchecked. We don't want mach3 to output a signal for a relay since the spindle will start up and turn off within the VFD and not from an external relay.

Next, go to the HuanyangVFD settings by clicking on Menu -> plugin control -> HuanyangVFD. Set the parameters to the same settings you put into the VFD programming. The com port will be shown as new hardward when you plug in the USB FTDI device. A little bubble will be displayed at the bottom right where it will notify you that a new device is being installed (be patient while windows assigns a com port). Alternatively, you can use the windows device manager to see which port was set for the new USB FTDI device). You may need to restart mach3 several times until you get the correct information displayed in the PD001 and PD002 fields. When the com port is correct and the other parameters, like baud and VFD address is the same as you entered in the programming, then the PD001 and PD002 will show the number 2, otherwise, a 99 will appear which means that communication was not successful.

You can now control the on/off and RPM of the spindle using the RS485 communication between mach3 and the VFD.

Additional Information:
The question was how to connect the spindle to the redfy. I did not receive a VFD.
I have the redFly system and a 2.2kW Spindle - 110V how do i connect the spindle?

Additional Information:
If you received a spindle without a VFD, please contact us asap. Our spindle will not work without a VFD.

Additional Information:
Hi, how is this setup in mach4?

Click the link to add information to this solution:
How do I conect the VFD of the spindle to the RS485 connections

Yes, you can cut a stack to sheets. I would recommend using a downcut end mill to help in holding down the material. You are correct in your assumption to make sure to keep the holding tabs all the way to the top of the cutting surface.

Click the link to add information to this solution:
2. Can multiple sheets be cut at the same time (say 4 1/16th sheets stacked)? I would assume that full thickness tabs on each sheet must be used to keep cut pieces in place?

Every Lunar eclipse that falls on the extra leap-year day. When is the next one, exactly? Good question- I'll submit it.

Click the link to add information to this solution:
How often do you guys answer questions? Is there a certain time of the month?

As long as the bearing has a minimum thickness of 1/4" and 9/32" is a bit thicker, there will be no problem with the book build using the bearing that is 1/32" thicker. There is actually more surface area which is better.

Click the link to add information to this solution:
in your book - Build you own CNC Machine. Can I use 9/32" thick bearing instead of 1/4" thick?