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Thread: Performax/Jet 10- 20 Design Problem

  1. #21
    Join Date
    Mar 2009
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    Next over to the Pedestal drill to complete machining on this part.

    And after a little fettling here's the completed part.
    http://ukulele-innovation.tripod.com ebay i/d squarepeg_3000 Email timmsken@hotmail.com

    If you can believe that moving images and sound, can fly through empty space across the universe and be seen and heard on a box in your living room ?.. then you can believe in anything.

  2. #22
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    I ran into a problem with this job...I made a cast iron threaded bush i tapped it out in the lathe at 9/16 UNF 18 TPI but the spindle was a loose fit when I screwed it in with about 10 thou slop ....not good enough for this project..I searched the web and looked at all the thread form charts on the planet..but the only standard thread sizes close to this spindle were 1/4 NPS and 9/16 UNF..NPS was slightly too small and UNF too large..So the only conclusion that I could come to was that this spindle was undersize and Pete and I got some from a bad batch in our machines..and thats what most likely caused the problem in the first place.
    So i fixed the problem by slitting the bush with the saw and adding a couple of adjusting screws to squeeze it in a bit.

    Next job was to saw off the stripped lug.

    Last edited by Timbuck; 10-12-2014 at 08:48 PM.
    http://ukulele-innovation.tripod.com ebay i/d squarepeg_3000 Email timmsken@hotmail.com

    If you can believe that moving images and sound, can fly through empty space across the universe and be seen and heard on a box in your living room ?.. then you can believe in anything.

  3. #23
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    Next i did a trial fit on the sander..I fitted the new bit first complete with spindle...it fitted together very easily (note magnet to keep all the screws from getting lost during assembly)


    Then I added the (now lugless) arm and bolted it in place with some longer 1/4" UNC screws through the top two holes of the motor mount slide into the arm..then I wound the rise and fall handle up and down a few times and it worked fine...nice and smooth just like it should...But when i wound it to the top it would not go all the way, due to a foul up with a lug sticking out on the top beam, that I had overlooked.

    No big problem I just machined a bit off and tried it again.
    And thats about it, up and running again, it should last for years and years..I'll start on Petes parts now that I know whats what..only i'll make his a slightly diferent way, due the the thread size problem.
    And i'll profile the new bit so it blends in better with the design.
    here is a view from the rear of the sander

    And finally a pic of the finished job
    Last edited by Timbuck; 07-03-2014 at 10:12 AM.
    http://ukulele-innovation.tripod.com ebay i/d squarepeg_3000 Email timmsken@hotmail.com

    If you can believe that moving images and sound, can fly through empty space across the universe and be seen and heard on a box in your living room ?.. then you can believe in anything.

  4. #24
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    May 2010
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    Cairns, Australia
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    Great documentation of the fix Ken.

    I've got one of these too, and like most others ran out to check if mine was going to fail on me any time soon. Couldn't see any problem at all, so as you said, it's probably a batch of mismatched parts that caused the problem in some machines.

  5. #25
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    Feb 2008
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    Big Island, Hawaii
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    That's an amazing repair Ken. I'm glad the replacement part for my 16/32 is cheap enough to just replace it. Mine has developed almost 1/4 turn of slop in the screw. You might be finding a lot of 10/20s showing up on your doorstep!
    Chuck Moore
    Moore Bettah Ukuleles
    http://www.moorebettahukes.com

  6. #26
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    We kneel in awe


  7. #27
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    Looks about 100,000,000 times stronger and better than the original. I'll be taking this thread down to the machine shop if my 10/20 ever fails. Thanks Ken.
    Liam Ryan.
    Cairns, Australia.
    Stump Jump Ukulele Co.
    Stump Jump on Facebook

  8. #28
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    Nov 2011
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    Amity Oregon
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    I have to say this will come in handy if the one I get fails. Thanks for your work and you will be the first I ask if i have a failure.

  9. #29
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    Apr 2008
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    Kapolei, Hawaii
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    Quote Originally Posted by Pete Howlett View Post
    We kneel in awe

    +1

    Time to clean & lube my 16/32. . .

  10. #30
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    Nov 2009
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    Western Massachusetts
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    Quote Originally Posted by Kekani View Post
    +1

    Time to clean & lube my 16/32. . .
    +2
    Wait, we're supposed to clean and lube them? I’m afraid if I clean my 16/32 it’ll fall apart! Similar to when I change the transmission fluid in my car...
    Stephen Beauregard
    www.snowshoeuke.com

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