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Thread: ShopBot not cutting accurately!

  1. #11
    Join Date
    Oct 2014
    Location
    Utah, USA
    Posts
    15

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    Quote Originally Posted by srwtlc View Post
    Mitch,

    Here's a recent thread post that will answer your pinion purchase question. Also, use a little blue loctite on those pinion grub screws.
    Thanks for that post! Super helpful Good idea on the loctite.

  2. #12
    Join Date
    Oct 2010
    Location
    TX
    Posts
    803

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    Mitch,

    I got to looking at the cuts on my computer- (I was on my phone this afternoon)... now that I see the deviations... I would have to strongly suspect loose or worn
    pinions, also. Don't want t sound like a broken record, but check those out first!

  3. #13
    Join Date
    Oct 2014
    Location
    Utah, USA
    Posts
    15

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    Quote Originally Posted by MogulTx View Post
    Mitch,

    I got to looking at the cuts on my computer- (I was on my phone this afternoon)... now that I see the deviations... I would have to strongly suspect loose or worn
    pinions, also. Don't want t sound like a broken record, but check those out first!
    Alright, thanks!!

  4. #14
    Join Date
    Oct 2014
    Location
    Utah, USA
    Posts
    15

    Default

    Everything works now, thanks for everyone's help!!

    Here's a picture of the most recent Arrow of Light carving:
    LJl2JYx.jpg

    It's perfect! All I had to do was re-tighten the y-axis pinion. The accuracy on this machine is incredible.

    Thank you everyone! Fixing this was very important, and I'm glad it worked.

  5. #15
    Join Date
    Mar 2004
    Location
    Delray Beach, FL
    Posts
    3,708

    Default

    Glad we could help. I would suggest pulling all pinion grubs and getting a bit of Loctite in there if you haven't already.
    Pinions do wear and you should have a spare set on hand. (SB sells them and ensures you get the right ones) Comparing the existing to a new one is a good way to see if you have wear. For you guys it would likely be an annual replacement.
    There is a general maintenance schedule in the shop-bot docs that if you haven't already printed out would be a good idea.
    Considering that it is a school you may want to convert it to a calendar chart with checkboxes, date done and name/initials.
    You would be leaving a "legacy" for future students while you go on to your further education.
    Keeping up on that schedule can prevent a lot of costly problems coming up in the future.

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