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Thread: Snap Tennon

  1. #1
    Join Date
    Jul 2008
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    Palm Springs, Ca
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    Snap Tennon

    The other day I turned a small vessel and I snapped the tenon while I was hollowing. Reason being, I had turned the base down before hollowing (mistake #1) and the tennon was about 1" diameter. Then I started hollowing and the torque of the cut just snapped it off.

    I put it on the work bench for the past couple days and I was going to throw it in the wood pile but I decided to try something. I still had the part that was in the chuck so i put it back in and leveled the surface. Then I took it over to the drill press and put a 1" hole thru it with a forestner bit.

    See Pic #1 - I then used some epoxy I had laying around to coat the tennon and on the inside of the hole.
    See Pic #2 - then put one inside the other and put it back in the chuck and used the tailstock to clamp it.

    Now ill let it dry good and see if I can recut it and rehollow it without it comming apart again................
    Attached Thumbnails Attached Thumbnails Glued-1.jpg   Glued-2.jpg  
    Last edited by Dan Mosley; 06-02-2010 at 12:55 PM.
    First you have to learn the rules - Beginner
    Then you have to learn advanced rules - Professional
    Then you disregard the rules - This takes you to the master level................

  2. #2
    Join Date
    Jul 2008
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    Palm Springs, Ca
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    Today I turned and finished the above small vessel and have it soaking in a oil/varnish/MS solution..........saved it ...........pictures later when I get it out of soak
    First you have to learn the rules - Beginner
    Then you have to learn advanced rules - Professional
    Then you disregard the rules - This takes you to the master level................

  3. #3
    Join Date
    Oct 2006
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    ABQ NM
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    Good deal, Dan. I've got one in the final finishing stages that I broke the tenon on. It didn't break at speed...I noticed it wasn't running true all of a sudden, so I shut the lathe down and found the tenon had cracked. I broke it off the rest of the way and just used Titebond to put in back on. Finished turning it the next day with no issues.
    When the going gets weird, the weird turn pro. - Hunter S. Thompson
    When the weird get going, they start their own forum. - Vaughn McMillan

    workingwoods.com

  4. #4
    Join Date
    Jul 2008
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    Good to know.....I have some titebond and thought I should use the epoxy for strength......good to know for the future...........thanks
    First you have to learn the rules - Beginner
    Then you have to learn advanced rules - Professional
    Then you disregard the rules - This takes you to the master level................

  5. #5
    Join Date
    Oct 2006
    Location
    ABQ NM
    Posts
    30,002
    If there are any gaps to fill, epoxy is the best choice. If the break is clean and it can go back together tightly, a Titebond joint will be stronger than the wood itself.
    When the going gets weird, the weird turn pro. - Hunter S. Thompson
    When the weird get going, they start their own forum. - Vaughn McMillan

    workingwoods.com

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