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Thread: Automatic Miter Saw Fence Stop

  1. #1
    Supporting Member Bellevue Woodshop's Avatar
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    Automatic Miter Saw Fence Stop

    I built this automatic fence stop for my miter saw station a couple of years ago.
    It was built from salvaged parts only.

    I am lucky to work in a field that has some dumpster diving opportunities

    On this project I used a 2000mm long linearrail w/bearings, a servo motor and driver, some loose bearings, an AT10 belt an pulley setup (no backlash), an old discarded laptop with win xp, and a working touch monitor from the dumpster.
    The only thing I purchase for this project was the 5 axis cnc driver board and a stepper driver off ebay at a total cost of aprox 10 usd.

    I have a video on my youtube channel showing it in action, that you can check out in the bottom of the page.

    Here is an overview of the system, with the custom interface shown:
    I built the operating screen on the base of the open software mach 3, made for cnc.
    I fitted my own functions, and graphics.

    To use it it is just a matter of punching in the desired length of cut, and the fence will move to the correct position.
    It also has the option to use a cutlist, containing multiple cut dimensions

    Automatic Miter Saw Fence Stop-untitled_1.1.2.jpg

    This is a closeup of the linear rail and belt and pulley system.
    It is hidden under a cover normally.

    Automatic Miter Saw Fence Stop-screenshot_1.1.4.jpg

    There is a homing switch to calibrate the system.

    Automatic Miter Saw Fence Stop-screenshot_1.1.6.jpg

    Each end of the rail has double bearing seated shaft and pulley.

    Automatic Miter Saw Fence Stop-screenshot_1.1.5.jpg

    The servomotor i mounted under the bench. Because this i a closed loop system, meaning it has position feedback,
    it does not matter if you bang the fence, it will always get back to position.

    Automatic Miter Saw Fence Stop-screenshot_1.1.7.jpg

    I made a setup to check the accuracy with a dial indicator ( if you want to see more from the test, and its repeat-ability, check out the video)

    Automatic Miter Saw Fence Stop-screenshot_1.1.2.jpg

    Here you can watch a video of it in use:



    Hope you found it interesting.

    Best regards
    Roy

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  2. The Following 19 Users Say Thank You to Bellevue Woodshop For This Useful Post:

    crazyhorseX (Mar 17, 2018), Duke_of_URL (Mar 28, 2024), Jon (Mar 16, 2018), LMMasterMariner (Mar 17, 2018), Moby Duck (Mar 30, 2024), mr mikey (Mar 28, 2024), mwmkravchenko (Oct 29, 2018), n9dug (Aug 14, 2020), PJs (Mar 18, 2018), ranald (Mar 23, 2018), richardcrane (Mar 19, 2018), rlm98253 (Mar 16, 2018), rossbotics (Mar 28, 2018), Tagwatts1 (Mar 19, 2018), thehomeengineer (Mar 16, 2018), Tonyg (Aug 14, 2020), Tooler2 (Mar 16, 2018), Toolmaker51 (Mar 16, 2018), Tuomas (Mar 22, 2018)

  3. #2
    Jon
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    Hi Bellevue Woodshop - welcome to HomemadeTools.net

    Great first post! Cool website too. Some other good picks on BellevueWoodshop.com:

    The Towersander
    Scrollsaw
    Double Disc Sander

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  4. #3
    Supporting Member thehomeengineer's Avatar
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    I can see lots of applications this could be used for first being a backstop for the sheet metal guillotine. Unfortunately, I am unlikely to make one but you can never say never. My skills when it comes to computers are a bit lacking I am afraid so I take my hat off to the skills you have shown. Very nicely made and definitely not overkill, why not have one if you can build it.
    Thank you for sharing
    The Home Engineer

  5. #4
    Supporting Member Bellevue Woodshop's Avatar
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    Thanks Jon, and thehomeengineer

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    Very good workmanship, Roy !
    Years ago I built a digital stop for a KMT cold-saw using a THK rail & Mitutoyo digital scale.
    It wasn't programmable like yours but worked great for steel/aluminum cut-off.
    BTW, there are plastic plugs available for the bolt holes in the rail if you need them.

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    Supporting Member Ralphxyz's Avatar
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    Wow, thanks for posting, great project just what I need to add to the list.

    Ralph

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    Awesome projects .... I totally agree with Ralph .... one more to the list

    hope you will put this as "plan for sale" on your shop ... i would gladly buy it IMMEDIATELY.... (plssssssss )

    Or we could talk for in private ... pls do let me know asap

    thanks for posting

    chX
    ps... love the way you have your shop done up ....

  9. #8
    Supporting Member Bellevue Woodshop's Avatar
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    Quote Originally Posted by gatz View Post
    Very good workmanship, Roy !
    Years ago I built a digital stop for a KMT cold-saw using a THK rail & Mitutoyo digital scale.
    It wasn't programmable like yours but worked great for steel/aluminum cut-off.
    BTW, there are plastic plugs available for the bolt holes in the rail if you need them.
    Thanks gatz. A linear rail and a DRO, also works great, even for repeatabilty. I did have some from Bosch Rexroth, but unfortunately I damaged a few of the while I dissmantled the rail from the machine. But as the rail is partially covered I did not bother to get new one.

  10. #9
    Supporting Member Bellevue Woodshop's Avatar
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    Quote Originally Posted by Ralphxyz View Post
    Wow, thanks for posting, great project just what I need to add to the list.

    Ralph
    Thanks Ralph

  11. #10
    Supporting Member Bellevue Woodshop's Avatar
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    Thank you very much crazyhorseX
    Unfortunately I am not planning to make plans for this.
    Mostly because I used salvaged parts, and therefor would not be of full value for other that did not have the exactly the same parts.
    If you where to buy all these parts new, it would probably be cheaper to buy a commercially made unit.

    I have sent you an email

    Thanks for the kind feedback, both on the projects and the shop
    Last edited by Bellevue Woodshop; Mar 17, 2018 at 04:42 AM.

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    PJs (Mar 18, 2018)

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