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### Question #: 6866

Question: Do you sell acme 1/2-8, 8 start antibacklash nuts and thread clamps?

Current Solution

We currently do not have that specific antibacklash nut available for sale. Please check back regularly since we are always updating our stock, and finding new items to add to our current stock regularly.

3/8 8start

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### Other Possible Solutions to this Question

Dealing with our 3/8" ACME screw, we intended to use this with a 3D printer machine(primarily) as well as our smaller motors. Which did not need the increased torque ratings as our larger motors, which will use the 1/2" ACME screw with larger machines.

• Do you sell leadscrews and ballnuts that are 5 TPI? I'd like 0.001" per step, using a 200 steps/rev (1.8 degree) motor.

We sell leadscews and anti-backlash nuts at the moment. Ballnuts will be available from us in the future.

Specifically to your question, you want 0.001" resolution:

The formula: (we are looking for a minimum of 1000 steps per inch
steps = (motors steps)/(travel with one motor rotation)

steps = (200 natural motor steps) x (microsteps ) / 0.5" travel (1/2" leadscrew 10 TPI 5 Starts)

steps = 200 * microsteps / 0.5"

multiply both sides by 0.5":

steps * 0.5" = 200 * microsteps

divide both sides by 200:

(steps * 0.5") / 200 = microsteps

replace steps with 1000:

(1000 * 0.5") / 200 = microsteps

500 / 200 = microsteps

2.5 microsteps will provide .001"

I would recommend 4 microsteps (1/4 microstepping), so your formula will be as follows:

steps = steps/inch = (200 * 4) / 0.5" = 800 / 0.5" = 1600 steps/inch

• What size of stepper drives the 3/8 acme thread and it's anti backlash nut?

The stepper motor that we currently use for our 3/8" lead screw, is 100 oz-inch motor on our 3D printer machine. But using the correct coupling you may use a 425 oz-inch stepper motor to run with the 3/8" lead screw.

What size of stepper drives the 3/8 acme thread and it's anti backlash nut?

• DO YOU HAVE CAD AVAILABLE FOR THE HIWIN GUIDE BLOCKS SELL AND RAIL?

We don't have cad models of the HIWIN blocks, but you can find the models on McMaster.com. They have can drawings and models for most of these types of parts.

DO YOU HAVE CAD AVAILABLE FOR THE HIWIN GUIDE BLOCKS SELL AND RAIL?

• DO YOU HAVE CAD AVAILABLE FOR THE HIWIN GUIDE BLOCKS SELL AND RAIL?

We don't have cad models of the HIWIN blocks, but you can find the models on McMaster.com. They have can drawings and models for most of these types of parts.

DO YOU HAVE CAD AVAILABLE FOR THE HIWIN GUIDE BLOCKS SELL AND RAIL?

• The acme thread and anti lash nut are pretty tight. Can I loosen this combo up a little?

Our anti backlash nut is optimized to give your the least amount of backlash with our ACME thread, so having loosen might give you more backlash and a offset. But there is no current way to loosen up the backlash nut.

The acme thread and anti lash nut are pretty tight. Can I loosen this combo up a little?

The tolerance of our 1/2" 5 start lead screw is +/-0.05mm

• do you have CAD available for the hiwin guide blocks you sell and the rail?

We don't have cad models of the HIWIN blocks, but you can find the models on McMaster.com. They have can drawings and models for most of these types of parts.

do you have CAD available for the hiwin guide blocks you sell and the rail?

• do you guys sell full set of lead screws, machined with bearings and mounts?

We sell all of those parts and if you need the lead screw machined to a specific spec, we can do this. To provide the specs, please send an email to us from the contact us page, link located in the footer.

If there is a specific part you need, please let us know and we can let you know if we have it, or if we can start carrying it.

do you guys sell full set of lead screws, machined with bearings and mounts?

• Sell you liner guideways and screwballs to 2000 mm. (78 inches) length?

We sell our lead screws at length but the longest single length is 78" for our 1/2" and our 3/8" is 72" long, now for our linear guide rails the longest rail we have (new item) is 55" at the moment we will be getting longer rails in the near future.

Sell you liner guideways and screwballs to 2000 mm. (78 inches) length?

• Do you sell 22 to 24 AWG stranded and shielded for wiring of the limit switches and E_Stop?

The wire that we sell for the limit switch wiring is here: https://www.buildyourcnc.com/item/3d-printer-component-cnc-electronicsandmotors-cable-wire-3-conductor-22-awg-wrcon-cablewire3conductor22awg

This is shielded cable to make sure there isn't any external interference with sensitive components and long wires associated with limit switches. This is necessary due to the interference caused by the motors on a CNC router and the milling process.

So unshielded is cool. That's what I was curious about. Cheers.

Absolutely. It's really the only type of cable I would recommend for connecting limit switches.

Do you sell 22 to 24 AWG stranded and shielded for wiring of the limit switches and E_Stop?

We need clarification on what you mean by threading: a parallel computer process, creating threads on a screw on a turning center, or threading a hole using a tap controlled by a CNC machine. If it's the latter two, you would rely on the stepping motors and dead reckoning (open loop system). Stepping motors will move exactly as instructed and have exact stop and positional accuracy so the threads would be constructed as intended; therefore, no need for encoders and feedback (closed loop system)

What he is asking perhaps is that how would he be able to do rigid tapping without encoder input? Alternatively, he may need a servo drive for the spindle. Which board supports rotary encoder input? I am looking for boards myself.

What he is asking perhaps is that how would he be able to do rigid tapping without encoder input? Alternatively, he may need a servo drive for the spindle. Which board supports rotary encoder input? I am looking for boards myself.

What he is asking perhaps is that how would he be able to do rigid tapping without encoder input? Alternatively, he may need a servo drive for the spindle. Which board supports rotary encoder input? I am looking for boards myself.

• Does the 5 start lead screw come with any nuts?

Our 5 Start ACME screw is sold by the inch, and sold as a single product. No anti-backlash nuts are sold with the purchase of the ACME screw as the anti-backlash nut is sold separately.

Does the 5 start lead screw come with any nuts?

• looking for two start set screws 8dia * 40 long plus 2 * nuts

We currently only stock 2 start lead screw for the 3/8".

looking for two start set screws 8dia * 40 long plus 2 * nuts

• Does the VLXL kit come with absolutely everything you need to start up?

The Vertical Laser XL Laser Cutter comes with everything but the hookup wires and heat shrink for wiring and the tools you will need to assemble the machine and wire the electronics. You will also need a blower/vacuum to evacuate gasses in the cavity of the machine, and a compressor to provide air assist at the nozzle. 4 conductor motor cable is supplied. Water and air tubing is supplied along with the structure, hardware, mechanical parts, electronics, and chiller.

The wiring will require strippers for insulation removal at the tips and a soldering iron to solder motor wires to them motor cable. Screw drivers and hex wrenches will be needed.

Assembling this kit is not for the faint of hearts and a ton of patience is necessary. It is a very entailed process that will take a bit of time to complete. If you have any reservations at all, please consider the assembled version.

Does the VLXL kit come with absolutely everything you need to start up?

• Why does the program freeze up in random places? Is there a way to continue where you left off or must I always start over?

To which program are you referring?

Customer Response:
I am using your Planet CNC software with a MK1USB controller importing a Vectric DXF file. Once I hit "Start" the machine operates fine until it randomly stops, the control functions gray out and I lose all control. Unplugging the USB and replugging it boots everything back up, but does not allow me to continue where it left off and makes me start the piece over.

Are you using a Laptop, or a desktop with the controller? Did you purchase the controller from us, or planet-cnc?

• do you sell plans for big machine with chain driven and how much its cost as dxf file which i can cut using cnc

The plans or DXF files are not offered. We sell the machines as kits or fully assembled. The kits are very well priced and will most likely cost less if materials and labor than working from plans (this comes from feedback from many customers that built similar machines from plans).

• do you sell plans for big machine with chain driven and how much its cost as dxf file which i can cut using cnc

The plans or DXF files are not offered. We sell the machines as kits or fully assembled. The kits are very well priced and will most likely cost less if materials and labor than working from plans (this comes from feedback from many customers that built similar machines from plans).

• Do you have a diagram on how to connect the vfd so the CNC controller box can turn the spindle on and off whenever i start a job?

The following videos are helpful when connecting the VFD to a pokeys57CNC controller; however, there is useful information on the external terminals of the VFD and how to connect the VFD to any controller using a relay. Additionally, the videos have useful information on how to program the VFD.

Start and stop for spindle
https://youtu.be/0SLFuM4tzuU

Speed control:
https://youtu.be/pA69t1ZLY2s

The following video uses the Mach3 usb controller to control a spindle.

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