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### Question #: 939

Question: In the Build your own CNC machine book, You said you use 1 1/4" angle on the main table but 1" would be better. So my question is Should I use 1" angle on the main table (4' length) and 1 1/4" angle for the BRA's and other rails?

Current Solution

You can use either 1" x 1" x 1/8", or 1-1/4" x 1-1/4" x 1/8" angle on the table sides. The BRAs should all be 3/4" x 3/4" x 1/8". The Y ans Z axes should use the 3/4" x 3/4" x 1/8" angles.

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### Other Possible Solutions to this Question

• I am building the CNC in your book - Build you own CNC Machine. One of the bearing thicknesses is 1/4" I can't find that bearing online. I can find 9/32, will that be a problem. Do you have a source? Thx

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.

I am building the CNC in your book - Build you own CNC Machine. One of the bearing thicknesses is 1/4" I can't find that bearing online. I can find 9/32, will that be a problem. Do you have a source? Thx

• I am considering my own cnc engraver I will be engraving nickel silver, ferrules that are tapered throufght the length. they are 24mm on one end down to 21mm on the other. my question is which software would suit me for this type of engraving?

ArtCAM is excellent for engraving applications. ArtCAM is a great generall purpose CAM software, but there are excellent examples of coin making and other engraving applications. Check out the videos tutorials here: https://www.buildyourcnc.com/item/CAM-SOFTWARE-artcam

• How do I get started I would like to build a cnc router. Making the machine I can do, but I am weak on cad,cam and mach3. I am thinking about a 4’x4’. Do you have plans I can buy?

We are developing plans for our machine, but they are not completed yet. Please let me know if you would like to be added to our list of customers wanting plans. Thanks,

If you have specific questions regarding CAD, CAM and Control, please add another question to the customer service and I will answer them in detail.

How do I get started I would like to build a cnc router. Making the machine I can do, but I am weak on cad,cam and mach3. I am thinking about a 4’x4’. Do you have plans I can buy?

• Where can I get the spec for the Cnc machine for the machine in the book build your own Cnc machine I tried the web page but no mesurments that I found
• I am planning to build a scratch CNC machine to do rotary engraving on writing pens. Can you recommend the parts I would need? I'm thinking NEMA 14 (11?) and 3/8" acme rod. Not sure which linear motion to use. I have an old lathe to use for the 4th axis.

Consider the loads on each axis when choosing appropriate stepper motors. If your holding torque is maxed out at roughly 16oz/in (1lb/in), then you could use the NEMA 11 or 14. Also consider the shaft sizes and current ratings when choosing drivers that pair with the motors.

• Do you have any videos or plans for how to make a strong table for a large CNC router? I saw the torsion box videos but would like some more guidance on how to build just a good table.
• If I purchase the [blackToe 2x4 v4.1 CNC Machine Kit - USB Electronics - Table Included] all I would need for this CNC to be fully operational is a laptop with mach 3 software and a router. Is this correct?

if you purchased the USB interface, you will need planet-cnc software rather than Mach3, and you will need a usb cable to connect the usb interface to the computer.

The blackToe 2x4 CNC Machine Kit with optional table will need wire to connect the electronics. Don't forget to get some end mills to use for cutting the intended material.

• I am going to build a CNC 4x4 plasma table. The frame is made of 1 1/4" pipe and the gantry will be made of either 2"x 2" or 2"x 3" tubing. What size stepper motors do you suggest?

We recommend our electronics combo for the scratch build kit, which you can find on our site here: https://buildyourcnc.com/item/electronicsAndMotors-3axis-425-elcombo. This is our standard general purpose 3 axis electronics system, and includes (3) NEMA 24 425 oz-in stepping motors, (3) Drivers (3.0Amp 24-40 Volts, with 1-1/64 microstepping), (1) 36v 8.8a Power Supply, (1) Interface Board either USB or Parallel. (The USB version requires PlanetCNC software; the parallel interface board gives you a variety of options, Mach3 being one popular choice.)

I am going to build a CNC 4x4 plasma table. The frame is made of 1 1/4" pipe and the gantry will be made of either 2"x 2" or 2"x 3" tubing. What size stepper motors do you suggest?

• I have wired up my 110v VFD and my 2.2Kw spindle and I get an E.Lu.5 code. My wiring is correct and the parameters are set to those for the VFD according to your website I found in a previously answered question from someone here. Any help would be greatly appreciated, thank you!!

The E.Lu.5 Error code on your VFD is related to Low Voltage.

The recommended action is:
- 1. Check whether the input voltage is normal. (the voltage from the wall/breaker to the VFD)
- 2. Check whether there is a sudden change in load.
- 3. Check whether there is any phase missing.

Unfortunately, these three recommended actions will probable require an electrician to test the line going into the VFD.

• in your book - Build you own CNC Machine. Can I use 9/32" thick bearing instead of 1/4" thick?

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.

in your book - Build you own CNC Machine. Can I use 9/32" thick bearing instead of 1/4" thick?

• I would like to design my own CNC router around one of your electronics bundles, either the 3 Axis - Heavy Gantry or 3 Axis - All Large Motors. Do you have the data sheets for the motors so that I can use the dimensions in my model?

You can find the datasheets to our motors be going to the the stepping motor category page https://www.buildyourcnc.com/category/nema and selecting the motor. This will bring you to the product page for the motor and all of the motor information will be found there.

• Would you sell a kit that has all of the hardware and electronics with CNC plans for the table and gantry? Some of have access to a CNC temporarily (TechShop) but want one of our own.

We currently do not sell any plan's for any of our machines, only for our scratch and build kit.

Would you sell a kit that has all of the hardware and electronics with CNC plans for the table and gantry? Some of have access to a CNC temporarily (TechShop) but want one of our own.

• Just bought Build Your own CNC Machine book. It is missing the chapter on lead screws that is described on page 181 at the end of Chaprer 16. Where can I get this info?

It sounds like you got a misprinted book. If you purchased it from us, please contact us directly for a replacement. If you bought it from Amazon or a third party, you'll need to contact them. General information about lead screws is available on this website and at buildyourtools.com.

Just bought Build Your own CNC Machine book. It is missing the chapter on lead screws that is described on page 181 at the end of Chaprer 16. Where can I get this info?

• I am following the build your own CNC book build for my first machine. Is the hardware on this page https://buildyourcnc.com/item/cnc-machine-scratchbuild the complete hardware kit (minus the items it already noted were not included) required for the build?

The scratchBuild page as listed above (link: https://buildyourcnc.com/cnckitintro.aspx), will have all the necessary hardware (bolts, screws, nuts, washers, etc) to finish the 2' x 4' scratchBuild CNC machine, with a DVD tutorial that will help you along the way.

Please read carefully, some items do not come included in the kit.
Listed materials of items not Included:
Computer of your choice that contains a parallel port
Sheets of MDF for the structural parts
Aluminum Angles for rails (.75"x.75"x.125").
X-Axis: ~52 Inches
Y-Axis: ~32 Inches
Z-Axis: ~14 Inches
Electronics

• I am converting a 12x36 lathe over to CNC, I am interested in a 2 axis kit. I would love one stepper motor to be no smaller than 1200oz. , and another at 6000z. Is this something that you could offer? I have two other cnc machines but this is my first converstion on my own.

We may be able to source those motors. Curious, the 6000 oz-in motor is pretty big. Do you mind explaining the application of the CNC machine and the structure that would require the large motor?

The largest motors we can offer is 3900 oz-in without any mechanical help. 6000 oz-in can be resolved by mechanical means as an alternative.

• [129] I have a Blackfoot and have a question about the power supply. I currently have a 36V power supply and my machine bogs down, would a 70V or something like that help, or will that blow up my machine? thank you!

I would first check the mechanical parts to ensure smooth motion. Is your machine bogging down during cutting or jogging/rapids?

You can increase the voltage to gain a higher speed for rapids/jogging, but make sure the driver can handle this voltage. There should be a max voltage on the driver label.

If the bogging down is happening during cutting, either reduce the cutting depth or switch out the drive and motor for the axis that is giving the problem.

• I recently purchase the BlackToe v2.1 (4x8) at a local school auction. The table is complete, however, it is missing the spindle and came in 4 (four) separate pieces. Are there plans for this machine that I would be able to use to reconstruct and determine if anything else is missing.

Yes, you can find all of the instructions for the blackToe CNC Router here:
https://buildyourcnc.com/item/cnc-machine-blacktoe-v4-2x4

• Many moons ago (when we were all a lot younger) you offered an export plan that consisted of various combinations of hardware/electronics and SketchUp of the CNC machine. Do you still offer SketchUp of your projects? I bought the new BlueChick and would like to build a roll-around cart for it. I might also wish to make modifications so a SketchUp would be most helpful.

We did give out the plans for our machines many moons ago, but a few winters back we had to cease this practice as the night was young and full of terrors. Unfortunately we no longer offer the .dxf files or g-code files for any of our CNC machines.

To build a roll cart for your blueChick, check out the similar cart we created for our blackTooth laser. (https://buildyourcnc.com/tutorials/Tutorial-sketchup-fabrication-fabricate-cad-cam-dxf).

• Hi my names is Minh Truong I would like to said thank you very much for your video I got the system mach3 working fine but one thing I can NOT set and config the digitizer on the board IN4 I am not sure how to setup because in the Mach3 pin 14 for digitizer Please shoe me hoe to set it up for the digitizer.

Can you send me a link to the digitizer you are using?

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