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Question #: 4708

Question: Why is your 3/8" acme thread only 2 start and your 1/2" is 5 start?

Current Solution

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.

Respond:

Other Possible Solutions to this Question

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

    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.

    Additional Information:
    3/8 8start

    Click the link to respond:
    Do you sell acme 1/2-8, 8 start antibacklash nuts and thread clamps?

  • Will the 1/2" 5 start lead screw and the 3/8" 5 start will it all work together in unison

    If the turns per inch on a lead screw is different, then the nut on the lead screw will move at a different velocity.

    Additional Information:
    Let me explain in more detail.

    Let's say you have two lead screws:

    - 1/2" 5 starts at 10 TPI = 2 turns per inch. (5 starts / 10 TPI = 1/2 inches per turn or 10 TPI / 5 Starts = 2 turns per inch.)

    - 3/8" 2 starts at 10 TPI = 5 turns per inch. (2 starts / 10 TPI = 1/5 inches per turn or 10 TPI / 2 starts = 5 turns per inch.)


    So, if two stepper motors (one connected to the 1/2" lead screw and the other connected to the 3/8" lead screw) turned 10 revolutions in 2 seconds, the 1/2" lead nut would travel 5 inches and the 3/8" lead nut would travel 2 inches at the 2 second mark.

    Click the link to respond:
    Will the 1/2" 5 start lead screw and the 3/8" 5 start will it all work together in unison

  • Will the 1/2" 5 start lead screw and the 3/8" 5 start will it all work together in unison

    If the turns per inch on a lead screw is different, then the nut on the lead screw will move at a different velocity.

    Additional Information:
    Let me explain in more detail.

    Let's say you have two lead screws:

    - 1/2" 5 starts at 10 TPI = 2 turns per inch. (5 starts / 10 TPI = 1/2 inches per turn or 10 TPI / 5 Starts = 2 turns per inch.)

    - 3/8" 2 starts at 10 TPI = 5 turns per inch. (2 starts / 10 TPI = 1/5 inches per turn or 10 TPI / 2 starts = 5 turns per inch.)


    So, if two stepper motors (one connected to the 1/2" lead screw and the other connected to the 3/8" lead screw) turned 10 revolutions in 2 seconds, the 1/2" lead nut would travel 5 inches and the 3/8" lead nut would travel 2 inches at the 2 second mark.

    Click the link to respond:
    Will the 1/2" 5 start lead screw and the 3/8" 5 start will it all work together in unison

  • Will the 1/2"5 start and 3/8" 5 start work in unison even though the turns per inch is different

    If the turns per inch on a lead screw is different, then the nut on the lead screw will move at a different velocity.

    Additional Information:
    Let me explain in more detail.

    Let's say you have two lead screws:

    - 1/2" 5 starts at 10 TPI = 2 turns per inch. (5 starts / 10 TPI = 1/2 inches per turn or 10 TPI / 5 Starts = 2 turns per inch.)

    - 3/8" 2 starts at 10 TPI = 5 turns per inch. (2 starts / 10 TPI = 1/5 inches per turn or 10 TPI / 2 starts = 5 turns per inch.)


    So, if two stepper motors (one connected to the 1/2" lead screw and the other connected to the 3/8" lead screw) turned 10 revolutions in 2 seconds, the 1/2" lead nut would travel 5 inches and the 3/8" lead nut would travel 2 inches at the 2 second mark.

    Click the link to respond:
    Will the 1/2"5 start and 3/8" 5 start work in unison even though the turns per inch is different

  • If I buy the 1/2" 5 start lead screw and the 3/8" 5 start lead screws will it all work together

    If the turns per inch on a lead screw is different, then the nut on the lead screw will move at a different velocity.

    Additional Information:
    Let me explain in more detail.

    Let's say you have two lead screws:

    - 1/2" 5 starts at 10 TPI = 2 turns per inch. (5 starts / 10 TPI = 1/2 inches per turn or 10 TPI / 5 Starts = 2 turns per inch.)

    - 3/8" 2 starts at 10 TPI = 5 turns per inch. (2 starts / 10 TPI = 1/5 inches per turn or 10 TPI / 2 starts = 5 turns per inch.)


    So, if two stepper motors (one connected to the 1/2" lead screw and the other connected to the 3/8" lead screw) turned 10 revolutions in 2 seconds, the 1/2" lead nut would travel 5 inches and the 3/8" lead nut would travel 2 inches at the 2 second mark.

    Click the link to respond:
    If I buy the 1/2" 5 start lead screw and the 3/8" 5 start lead screws will it all work together

  • What is the tolerance on your 1/2" acme thread?

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

    Click the link to respond:
    What is the tolerance on your 1/2" acme thread?

  • I just changed my X and Y to the ACME 1/2" 5 start lead screw. What are the motor tuning numbers. I have the book built machine.

    The settings that will have to be change will be your steps per inch in motor tuning (mach 3), or settings/axes(planetCNC). But we do not have the actual numbers/specs that will fit your 10 TPI 5 start lead screw, here is a tutorial video which explains how to get the exact numbers you need! (

    )

    Click the link to respond:
    I just changed my X and Y to the ACME 1/2" 5 start lead screw. What are the motor tuning numbers. I have the book built machine.

  • Regarding 1/2" 5 start and 10 TPI ACME precision lead screw, what the maximum length you can ship within USA? I'm looking for something like 100" and I could use a 1" screw if available. Please include estimated price. Thanks.

    The maximum length we can ship is a total of 78" inches. However we can send your required length in portions. Please refer to adding the total items you require to your cart to get a visualized amount and shipping cost.

    Click the link to respond:
    Regarding 1/2" 5 start and 10 TPI ACME precision lead screw, what the maximum length you can ship within USA? I'm looking for something like 100" and I could use a 1" screw if available. Please include estimated price. Thanks.

  • 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.


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

    Click the link to respond:
    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?

  • For the 1/2'' 5 start ACME leadscrew, what is the length purchased for the $2.00 order? and if you make 2 orders, are you getting two separate rods or 1 rod at twice the length. Thanks.

    We sell our ACME screws in total length (overall length you require), but if individual lengths are needed you can contact us via phone (281-815-7701) or email (customerservice@buildyourcnc.com).

    A $2.00 order will be a total of 1 inch, but if ordered separately then you will receive 2 of the same length.

    Click the link to respond:
    For the 1/2'' 5 start ACME leadscrew, what is the length purchased for the $2.00 order? and if you make 2 orders, are you getting two separate rods or 1 rod at twice the length. Thanks.

  • 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.

    Click the link to respond:
    The acme thread and anti lash nut are pretty tight. Can I loosen this combo up a little?

  • When I try to run Mach3 It just crashes and restarts my computer.

    What Windows version are you running? I have heard of a windows update that crashes Mach3. Try uninstalling Mach3 then re-installing it to see if that works. Make sure to save your .xml files under the Mach3 folder or you will lose your settings. Also, copy your license file under that folder so you can re-copy it into the new folder.

    Another solution is to roll back the windows update to a previous version (just prior to the update).

    Additional Information:

    Click the link to respond:
    When I try to run Mach3 It just crashes and restarts my computer.

  • i zero out the z axis on a file and about half way through, the bit is lower then it started. about 1/8 off

    Sounds like it is stalling as the z is trying to move up. I would first try putting 3-in-1 oil on the screw and run the z up and down a lot as fast as possible so you can confirm the z is capable again. It could also be the shaft or the lead screw slipping in the coupling. Finally, check the wiring where there may be zip ties or other places where the wires are fastened and look for chafing. This can cause intermittent shorts in the wires.

    Click the link to respond:
    i zero out the z axis on a file and about half way through, the bit is lower then it started. about 1/8 off

  • 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.

    Click the link to respond:
    What size of stepper drives the 3/8 acme thread and it's anti backlash nut?

  • Windows 7 is reboots after starting Mach3. Please advise. S

    Are you using the parallel port to interface with the machine? If so, Mach3 uses a driver that interacts with the parallel port and if there is a problem with your parallel port, then I suspect that your computer will reboot, from a short at that portion of the motherboard, of something to that effect.

    Additional Information:
    yes i use parallel port

    Additional Information:

    Click the link to respond:
    Windows 7 is reboots after starting Mach3. Please advise. S

  • WHAT IS THE MOST EASY WAY TO HOOK UP MILL IN THAT AUTOMATICALLY STARTS WHEN CYCLE STARTS, AND STOPS GCODE THROUGH?

    Does your breakout board (interface) have a relay? If so, you can connect one of the router/spindle's ac lines through the relay. The M3, M4 and M5 codes are used to control the router/spindle. Typically, the M codes are automatically added to the g-code regardless if you configure this in your CAM software. If you have the breakout board from buildyourcnc, you can go to the product page for the breakout board and the relay connection diagram and narrative is in the instructions on that page.

    Click the link to respond:
    WHAT IS THE MOST EASY WAY TO HOOK UP MILL IN THAT AUTOMATICALLY STARTS WHEN CYCLE STARTS, AND STOPS GCODE THROUGH?

  • looking for 5 start lead screw 3/8 4 feet long i need 2 of them

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

    Click the link to respond:
    looking for 5 start lead screw 3/8 4 feet long i need 2 of them

  • My VFD has started to dL error at startup, what could be the issue?

    The DL error usually means that there is a short in the wiring going from the VFD to the Spindle. First remove the spindle connection and run the VFD. If "DL" does not appear then this means the short is on the spindle itself. Remember to double check your wiring and to use heat shrink on the soldering points to prevent any shorts or arcing between the points.

    Additional Information:


    Additional Information:
    My drive showing dp when it start


    Additional Information:


    Additional Information:


    Additional Information:


    Additional Information:
    My dovol VFD is telling me do what should I do

    Click the link to respond:
    My VFD has started to dL error at startup, what could be the issue?

  • My Question is about the 2.2kw spindle, because the thread start is so small I have a hard time centering the collet before it binds from tighting what have others done to overcome this

    Can you see any damage to the beginning of the thread on the shaft of the spindle, or any damage to the thread on the inside of the collet nut?

    Additional Information:
    There is no damage, I cannot put a tool in without removing the nut and collet when I go to tighten it, it starts to seat the collet and if I cannot hold the tool just right it is off center

    Click the link to respond:
    My Question is about the 2.2kw spindle, because the thread start is so small I have a hard time centering the collet before it binds from tighting what have others done to overcome this