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Question #: 6880

Question: I am trying to build a cutoff saw adjustable fence belt driven i need a linear rail 8 feet long it has a min. working load suggestions?

Current Solution

Are you specifically asking for the axial load, or load on the mechanics which will drive the fence by the stepper/servo motor?

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Other Possible Solutions to this Question

  • I am getting that radus error in Mach3 and changing my IJ setting is not working. Any suggestions?

    What is the actual error that you are seeing in Mach3 and what CAM program are you using? Did you try installing a later version of Mach3 if your's is an earlier version? What post-processing setting are you using in your CAM program?

    Click the link to add information to this solution:
    I am getting that radus error in Mach3 and changing my IJ setting is not working. Any suggestions?

  • 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.

    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.

  • I am working with a Spur gear that has a 15 tooth 3/8 bore/ 3/8 wide....is the 651ozin stepper motor compatible with this or do I need to get a different motor

    This gear should work with this motor. The shaft on the 651ozin motor is 3/8"

    Click the link to add information to this solution:
    I am working with a Spur gear that has a 15 tooth 3/8 bore/ 3/8 wide....is the 651ozin stepper motor compatible with this or do I need to get a different motor

  • [541] I need some help, can I pay you for your time? I have a old Golden Laser has 2 co2 lasers 80 watts each, trying to put a new Ruida 6445G contorller in it.

    Yes, if you wish to get help with a product that was not purchased at buildyourcnc.com, you can go to this link and purchase a token:
    https://www.buildyourcnc.com/item/sub-assemblies-Technical-support-token

    Click the link to add information to this solution:
    [541] I need some help, can I pay you for your time? I have a old Golden Laser has 2 co2 lasers 80 watts each, trying to put a new Ruida 6445G contorller in it.

  • IS THE "#25 ROLLER CHAIN" ADJUSTABLE TO ANY LENGTH? LIKE IF I ORDERED TEN FEET OF IT, CAN MAKE TWO 3-FOOT LOOPS AND ONE 4-FOOT LOOP USING SOME SORT CHAIN JOINER?

    Roller chain in general is adjustable by using "master links", which are links which have horseshoe clip holding the pin and thus allow connections to be made or broken. The #25 is a designation of the type of roller chain. ANSI codes designate that the first digit(s) specify the pitch in eights of an inch, and the last digit is 0 for standard chain, 1 for lightweight chain, and 5 for bushed chain with no rollers. So #25 is 2/8 = 1/4 inch pitch bushed chain with no rollers.

    Click the link to add information to this solution:
    IS THE "#25 ROLLER CHAIN" ADJUSTABLE TO ANY LENGTH? LIKE IF I ORDERED TEN FEET OF IT, CAN MAKE TWO 3-FOOT LOOPS AND ONE 4-FOOT LOOP USING SOME SORT CHAIN JOINER?

  • I am Trying to put a payment trough via the online payment system but my card has been declined DO you any other paymenyoptions

    In the payment screen, we offer a paypal option and a bill me later paypal option. If the credit/debit card is declined, use the paypal options, or call us to purchase using another method, such as check/money order, or wire transfer. 281-815-7701

    Additional Information:
    20

    Click the link to add information to this solution:
    I am Trying to put a payment trough via the online payment system but my card has been declined DO you any other paymenyoptions

  • Hello, I am trying to configure Home and Limit switches using the Pokeyes57cnc and NC switches. I am confused on the procedure of setting this up. wiring to the board and setting up in Mach4. Can you direct me to a tutorial or offer some suggestions? Thanks Dale

    NC mechanical switch configuration is supported. You can download the manual from this page (Mach4 plugin and manuals):
    https://buildyourcnc.com/item/electronicsAndMotors-electronic-component-breakout-Mach4-mach3-USB-ethernet-Board

    The pokeys57CNC controller has input terminals and pins for limit switches on each of the 8 axes. There are three separate inputs per axis, two for the actual limits of that axis, and one for the home position.

    Connect each switch between the GND terminal and its respective axis limit terminal/pin. For instance, the limit switch will typically have three leads, COM, NC, and NO. In an NC configuration, the NC connects to the terminal/pin, say, Axis 1 lim +, and the COM connects to the GND terminal.

    In Mach4, in the new device wizard, make sure to specify the correct option on the home and limit switches that matches the machine configuration.



    Additional Information:
    can you use one switch per axis for home only?

    Click the link to add information to this solution:
    Hello, I am trying to configure Home and Limit switches using the Pokeyes57cnc and NC switches. I am confused on the procedure of setting this up. wiring to the board and setting up in Mach4. Can you direct me to a tutorial or offer some suggestions? Thanks Dale

  • Is the "#25 Roller Chain" adjustable to any length? Like if I ordered ten feet of it, can I make two 3-foot loops and one 4-foot loop using some sort of chain joiner?

    Roller chain in general is adjustable by using "master links", which are links which have horseshoe clip holding the pin and thus allow connections to be made or broken. The #25 is a designation of the type of roller chain. ANSI codes designate that the first digit(s) specify the pitch in eights of an inch, and the last digit is 0 for standard chain, 1 for lightweight chain, and 5 for bushed chain with no rollers. So #25 is 2/8 = 1/4 inch pitch bushed chain with no rollers.

    Click the link to add information to this solution:
    Is the "#25 Roller Chain" adjustable to any length? Like if I ordered ten feet of it, can I make two 3-foot loops and one 4-foot loop using some sort of chain joiner?

  • IF I PURCHASE A GREENBULL 6X LONG Z CNC MACHINE KIT AND MACH3, WHAT ELSE WOULD BE REQUIRED TO ASSEMBLE THE WORKING MACHINE? HAVE CAD SOFTWARE.

    You will need to build the table unit for your machine. There are instructions on how to do this at the bottom of the product page here, https://www.buildyourcnc.com/Item/cnc-machine-blackFoot-v4
    There is no estimate on how much this will cost though, since there are too many variables involved to do this.

    - PC with parallel port and USB port
    - 20awg stranded wires for the motors - http://www.buildyourcnc.com/electronicscombo.aspx
    - 18awg stranded wires for power supply to drivers
    - 24awg stranded wires for breakout board to drivers
    (location and spacing of components varies from one person to another, so we do not provide cables/wires)
    - General purpose extension cord (cut the female end off) to provide power to power supply
    - USB cable to power breakout board
    - Parallel cable to communicate to breakout board
    - Router
    - (optional - instead of router) Spindle with power inverter http://www.buildyourcnc.com/SpindlesAndAccessories.aspx
    - (if purchasing spindle with inverter) General purpose extension cord (240v) (cut the female end off) to provide power to power inverter
    - End Mill(s) http://www.buildyourcnc.com/ProductsEndMills.aspx
    - CAD, and/or CAD-CAM software (to produce geometry, machine operations, and g-code) http://www.buildyourcnc.com/CNCsoftware.aspx
    - CNC control software (to read g-code and control machine) http://www.buildyourcnc.com/CNCsoftware.aspx

    This answer is applicable to most of our machines with the exception of the greenLean and the blueChick since those machines are equipped with a table structure.

    Additional Information:



    Additional Information:



    Additional Information:

    Click the link to add information to this solution:
    IF I PURCHASE A GREENBULL 6X LONG Z CNC MACHINE KIT AND MACH3, WHAT ELSE WOULD BE REQUIRED TO ASSEMBLE THE WORKING MACHINE? HAVE CAD SOFTWARE.

  • If I purchase a greenBull 6X Long Z CNC Machine Kit and Mach3, what else would be required to assemble the working machine? I have CAD software.

    You will need to build the table unit for your machine. There are instructions on how to do this at the bottom of the product page here, https://www.buildyourcnc.com/Item/cnc-machine-blackFoot-v4
    There is no estimate on how much this will cost though, since there are too many variables involved to do this.

    - PC with parallel port and USB port
    - 20awg stranded wires for the motors - http://www.buildyourcnc.com/electronicscombo.aspx
    - 18awg stranded wires for power supply to drivers
    - 24awg stranded wires for breakout board to drivers
    (location and spacing of components varies from one person to another, so we do not provide cables/wires)
    - General purpose extension cord (cut the female end off) to provide power to power supply
    - USB cable to power breakout board
    - Parallel cable to communicate to breakout board
    - Router
    - (optional - instead of router) Spindle with power inverter http://www.buildyourcnc.com/SpindlesAndAccessories.aspx
    - (if purchasing spindle with inverter) General purpose extension cord (240v) (cut the female end off) to provide power to power inverter
    - End Mill(s) http://www.buildyourcnc.com/ProductsEndMills.aspx
    - CAD, and/or CAD-CAM software (to produce geometry, machine operations, and g-code) http://www.buildyourcnc.com/CNCsoftware.aspx
    - CNC control software (to read g-code and control machine) http://www.buildyourcnc.com/CNCsoftware.aspx

    This answer is applicable to most of our machines with the exception of the greenLean and the blueChick since those machines are equipped with a table structure.

    Additional Information:



    Additional Information:



    Additional Information:

    Click the link to add information to this solution:
    If I purchase a greenBull 6X Long Z CNC Machine Kit and Mach3, what else would be required to assemble the working machine? I have CAD software.

  • I had to wipe my computer due to virus and now can not download the USB software again. I get a "unhandled exception" error message. Any suggestions?

    An unhandled exception generally means that, in the program code, the program is not checking against every possible exception that could occur. Most likely, this exception is caused by some limit that is being exceeded (or the other way around). I would remove any files that could be associated with the program, like setting files, or even register configurations associated with that software. Also, make sure that you completely update your version of windows.

    Check to make sure all of the drivers are current for your graphics hardware. Make sure that your graphics hardware works in other programs as well.

    If you upgraded the Windows version, check to make sure your graphics hardware is compatible with the new version of Windows. Unhandled exception issue may be associated with graphics hardware and compatibility.

    Customer Response:
    I've given up on the wiped laptop and loaded the program on a different computer using windows 8. At first it won't operate my CNC until I read on Planet-CNC forum about loading the drivers on windows 8. All working now. Will run through the calibrations again today. Thanks

    Click the link to add information to this solution:
    I had to wipe my computer due to virus and now can not download the USB software again. I get a "unhandled exception" error message. Any suggestions?

  • I'm looking for a complete CNC router, out the box ready to use system. Computer and software. What do you suggest? I need a working area of 12"x24"

    The bluchick CNC router is a perfect small format CNC that can handle most jobs. Please check here to see the latest information on this CNC router. blueChick CNC Machine. The machine can be purchased assembled. Al you will need is a computer and spindle.

    Click the link to add information to this solution:
    I'm looking for a complete CNC router, out the box ready to use system. Computer and software. What do you suggest? I need a working area of 12"x24"

  • I Want to design and build my own CNC wood working machine. Do you give advice and help advice to do this?

    We offer as much information as possible about the design and building of CNC machines through this website and the forums at buildyourtools.com. We also still offer our "scratch build" plans at https://buildyourcnc.com/item/cnc-machine-scratchbuild, where you can order the plans and DVD to build your own machine with or without the necessary hardware components.

    Our technical support staff are occupied full time assisting customers who have bought complete kits or assembled machines, and unfortunately do not have the resources to provide one-on-one advice to individuals.

    Click the link to add information to this solution:
    I Want to design and build my own CNC wood working machine. Do you give advice and help advice to do this?

  • 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.

    Click the link to add information to this solution:
    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.

  • I need the calculation to determine the stepper motor torque to find the load that it can lift using a lead screw at 1/2" diameter with 13 TPI.

    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:
    I need the calculation to determine the stepper motor torque to find the load that it can lift using a lead screw at 1/2" diameter with 13 TPI.

  • [575] I have an older CNC (2018) which has been working fine. The Windows 7 PC crashed and I am trying to get operational again using a windows 10 machine. I will have to buy a new license for the Mach 3 so will need to get the interface board I have to talk to MAch 3. Can I get just the disc or is there a place I can download what I need?

    If you already have a Mach3 license, you don't need to purchase another one. The license is connected to you rather than the computer. Mach4 is licensed to the computer, but you are able to have multiple computers for each license, and can be switched from one computer to another.

    If you purchased the license from me, you can call (make sure to leave a voicemail), or email to get a re-issued license.

    Click the link to add information to this solution:
    [575] I have an older CNC (2018) which has been working fine. The Windows 7 PC crashed and I am trying to get operational again using a windows 10 machine. I will have to buy a new license for the Mach 3 so will need to get the interface board I have to talk to MAch 3. Can I get just the disc or is there a place I can download what I need?

  • "Step 34 - Software Toolchain Part 1 - Mach 3 Installation" Video is missing. Do you have? Am trying to install Mach3, need someone to hold my hand a bit here :-)

    That video was hosted by Metacafe and I just went to the permalink for the video, but no video. Metacafe failed me on this one. I will look for my raw video (which will take a bit of time) and re-post it to youtube.

    If there are specific questions; please post them here and I will help you along the way. As these questions are asked and answered, they help others as well in the future.

    Click the link to add information to this solution:
    "Step 34 - Software Toolchain Part 1 - Mach 3 Installation" Video is missing. Do you have? Am trying to install Mach3, need someone to hold my hand a bit here :-)

  • i have a redfly box for a greenbull 5x10 do I need to load a firmware to use planet cnc or is it already done

    For our redFly there is no need for firmware, however you will need to purchase a license for the board. Which you can buy here: (http://planet-cnc.com/product/cnc-usb-controller-license/)
    The license is to completely unlock the software Planet-CNC.

    Click the link to add information to this solution:
    i have a redfly box for a greenbull 5x10 do I need to load a firmware to use planet cnc or is it already done

  • I trying to setup your USB Controller card. The planetcnc does not load the card, no driver for usb card. Using windows 8.1.

    To install the USB breakout board, there will be no driver to install nor any pop-up will be viewed in your windows task-bar, except only to notify that a USB device has been connected.

    If you have planet-cnc installed it should automatically ask for a license number, which if you don't have you will continue without entering any numbers. Please read carefully since there is a pop-up that can erase the entire firmware on your board, and you will basically have a dead board.

    Please email customerservice@buildyourcnc.com for further assitance.

    Additional Information:
    For Windows 8.1 you need to follow special driver installation steps. Download Planet-cnc software MANUAL and scroll down to that paragraph (without it you will not be able to install and use your board).

    Click the link to add information to this solution:
    I trying to setup your USB Controller card. The planetcnc does not load the card, no driver for usb card. Using windows 8.1.

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