Stripped elevation and Helicoil installation


  • Stripped elevation and Helicoil installation

    So I rushed out and bought my first table saw, than discovered this site and all the helpful information "like how to buy a BT saw).

    What I didn't know was I had an elevation problem. The screw that runs from the 90 degree bevel gears up through the aluminum motor housing was badly worn. Once I had the two parts out of the saw, the damage to the aluminum threads was worse. After a little help from others on this site, I choose to put in a helicoil. The attachments show the pictures and how to.

    Of note, I would use a drill press, this was my first of two mistakes and the only one that created more headaches. The second mistake I made was to completely remove this housing from the motor (by taking the filed, brushes, housing, arbor, belts, pulleys you get the idea) apart. It took patience and time to re-assembly, but I'm happy to report the saw worked great tonight after a weekend of wrenching.
    Attached Files

    • dbhost

      Editing a comment
      Good write up, good pictures...

      I have used Helicoil inserts on a variety of projects for a lot of years. Including Cylinder Head / valve cover threads on an old Jeep. I say this with LOTS of experience in the matter...

      Helicoil inserts, when properly installed do a wonderful job of replacing stripped out threads. Like the OP showed, alignment is key. A practiced hand and good eye will tell you if you are lined up right. Many hand power drills have bubble levels built into them for a reason, if your drill has them, USE THEM.

      And lastly, one item the OP missed that I would strongly suggest is a dab of Loctite red (High Strength) threadlocker compound on the OUTSIDE threads of the insert where the insert threads into the new threads you cut into your work piece. Between that and the tang, your insert won't go anywhere.

      And being that the Helicoil insert is usually T304 Stainless Steel, it is far less likely to ever strip out again compared to the original threads in aluminum.

    • drillman88
      drillman88 commented
      Editing a comment
      Nice write up.
      I agree with the red loctite we use this on helicoils at work. It really works as promised, the key is to remove any cutting oil with solvent and compressed air, as long as the is no oil present there will be little chance of loctite failure.

    • spelljammer
      spelljammer commented
      Editing a comment
      Great information!

      Great information! The photos and information are easy to understand. I'm putting all of this info in a binder for future reference! Thanks for your post!
    Posting comments is disabled.

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