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Thread: Shopbot wire guide

  1. #1
    Join Date
    Mar 2004
    Location
    Lenox High School, Lenox MA
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    818

    Default Shopbot wire guide

    I need to replace the flexible plastic wire guide, it snapped today. Is there a practical substitute for the wire guide that anyone has designed?

    Phil

  2. #2
    Join Date
    Jan 2004
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    iBILD Solutions - Southern NJ
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    7,911

    Default

    In a pinch - to get you through for a few weeks, 1/4" Sintra/Komatex PVC will work. If it's a PRT, you'll need 3 pieces. 2 @ about 24" and the long piece. Use the two shorter ones to bolster/reinforce the ends where they attach to the angle brackets. You can buy a replacement from SB...but personally, I'd look at putting E-chain on it and getting rid of the guide. It's probably the same price or cheaper to put e-chain on it....look on Ebay. Something 3-4" wide is fine.

    Here you go...$40+sh Make sure it's right before you buy...

    -B
    High Definition 3D Laser Scanning Services - Advanced ShopBot CNC Training and Consultation - Vectric Custom Video Training IBILD.com

  3. #3
    Join Date
    Sep 2006
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    cnc routing, portland or
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    3,616

    Default

    it is made from polycarbonate but the echain is so much nicer.

  4. #4
    Join Date
    Dec 2011
    Location
    Piedmont, SD
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    649

    Default

    Wow - $40 is a gift of a price.
    I've been considering adding one to X - axis on a PRSAlpha 9660. Looks like about a 64" length on the Y axis - anyone know ideal length for the X?

    jeff

  5. #5
    Join Date
    Jan 2004
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    iBILD Solutions - Southern NJ
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    Default

    Yeah everything CNC related has gotten really cheap over the years.

    I don't remember the length off the top of my head, but find out what the minimum bend radius is for the chain you are looking at, triple it and then add that length to 1/2 the X travel (since the chain only has to go 1/2 way). Longer is fine because you can easily remove links.

    Don't forget, you'll need a trough for the chain to sit in along the X. On my 16' machine I made one out of 2pcs of 2x2 angle and then welded 2 pieces of 2x2 angle to side bolt/attach to the table crossmembers. Works great. I suppose you could make one out of some plywood and 2x lumber too...If that's "your style"...

    -B
    High Definition 3D Laser Scanning Services - Advanced ShopBot CNC Training and Consultation - Vectric Custom Video Training IBILD.com

  6. #6
    Join Date
    Mar 2004
    Location
    Lenox High School, Lenox MA
    Posts
    818

    Default

    This E-Chain is 52" long. The existing plastic guide is 68" long. I know that the E-Chain is much more flexible but can it make up for a 16" difference?

    Phil

  7. #7
    Join Date
    Jan 2004
    Location
    iBILD Solutions - Southern NJ
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    Default

    Phil,
    Yes...there's no Z dimension to contend with. That guide is like 3 feet or so up in the air. Guys in low ceiling basements go this route all the time.

    -B
    High Definition 3D Laser Scanning Services - Advanced ShopBot CNC Training and Consultation - Vectric Custom Video Training IBILD.com

  8. #8
    Join Date
    Mar 2004
    Location
    Lenox High School, Lenox MA
    Posts
    818

    Default

    Just placed the order - thanks.

    Phil

  9. #9
    Join Date
    Jun 2016
    Posts
    8

    Default

    Quote Originally Posted by Brady Watson View Post
    Yeah everything CNC related has gotten really cheap over the years.

    I don't remember the length off the top of my head, but find out what the minimum bend radius is for the chain you are looking at, triple it and then add that length to 1/2 the X travel (since the chain only has to go 1/2 way). Longer is fine because you can easily remove links.

    Don't forget, you'll need a trough for the chain to sit in along the X. On my 16' machine I made one out of 2pcs of 2x2 angle and then welded 2 pieces of 2x2 angle to side bolt/attach to the table crossmembers. Works great. I suppose you could make one out of some plywood and 2x lumber too...If that's "your style"...

    -B
    i converted mine to e-chain also. for my trough i used cheap plastic gutter from menards - works excellent

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