What's on Your Workbench Today?

Discussion in 'Luthier's Corner' started by DanielC, Feb 22, 2012.

  1. eS.G.

    eS.G. Well-Known Member

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    Is the Casio holding up the table or just for effect? ;)
     
  2. SG John

    SG John Well-Known Member

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    It's a migrating table support/saw dust magnet. Sometimes, I'll try to play it.
     
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  3. WavMixer

    WavMixer Well-Known Member

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    Not a luthier project, but here is what has been on my desk for the last couple of days. I photographed the jewelry, turned the pics to transparent backgrounds, animated and turned into both a video and web page...


    Welcome to Paradise!
     
  4. bea

    bea Well-Known Member

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    After the violin repair another major repair: my 5 string. That one :-( :

    [​IMG]

    The top sank in again; finally the guitar war hardly playable.
    Putting it into the oven is not a solution for me. So finally what i should have already done 30 years ago: the BIG repair.

    [​IMG]

    The results of my various attempts to stabilize it:

    [​IMG]

    Most of the rubbish removed:

    [​IMG]



    And now: cleanup, filling all the broken parts of the top, opening up the pickup holes and completely filling them. I am going to give her "fake pickups", convert the large hole on the right into a soundhole and leave the plate on the upper left as a removable opening for future electrification. The neck block also needs to be removed - the guitar needs a neck reset.
     
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  5. donepearce

    donepearce Well-Known Member

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    How will you tackle this? It seems to me that if you want it to play acoustically, you could give it a proper set of soundboard bracing. Otherwise, if it just an electric instrument, make a full-length block to take all of the stress off the front.
     
  6. syscokid

    syscokid Well-Known Member

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    You are a brave person, bea... :cheers:

    I'll have a tantrum just trying to change my strings... :rolleyes:
     
  7. bea

    bea Well-Known Member

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    That's a typical archtop bracing - so called parallel bracing.
    After closing the holes I will make new braces and scallop them appropriately in order to achieve a good acoustic sound (it was quite good anyway). There seems some potential - the original braces were a bit short and higher than needed.
     
  8. donepearce

    donepearce Well-Known Member

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    That will be interesting. Could we have a pic of the new bracing before you close it up?
     
  9. bea

    bea Well-Known Member

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    Yes of course i can.
    Because of the extreme weaknes of the top in the region of the neck pickup hole I am a bit unsure if i could really use standard bracing in that region. I am afraid that some strong bracing need to be extended to the upper block. It all depends on the strength of the top after the repair.

    Here You can see an example by a Luthier:
    https://www.gitarrebassbau.de/viewtopic.php?p=91360#p91360
     
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  10. donepearce

    donepearce Well-Known Member

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    I get that - maybe you can just put a shallow carve in the bracing where it crosses a pickup hole.
     
  11. Raiyn

    Raiyn Well-Known Member

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    Good thing you're getting lockers for your Moonie eh?:naughty:
     
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  12. SG John

    SG John Well-Known Member

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    Got the tenon for my Thunderbird build all milled up. I also fixed a little "Oops" where the band saw walked.Still got a bit of work to do on the neck, before I attack the body.

    Neck Tenon.jpg


    My friend asked if I would figure out why the bridge pickup on his '70 EB-3 didn't work. It ended up being just a broken wire. Soldered it up, and cleaned the pots and switch. While I had it, I also made a pickguard for it. He bought it stripped, and not working well years ago. His dad wired it for him. I wish that I had the necessary tools to separate the neck and body, then re-set it. The neck has pulled up over the years, and it would be the only way to correct the action. It doesn't stop him from playing it. It still sounds good.


    Tom's EB-3 Template.jpg

    Tom's EB-3 with New Guard.jpg
     
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  13. chilipeppermaniac

    chilipeppermaniac Well-Known Member

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    If it is Hide Glue, might it be heatable till soft,,,,,,,,,,,,, and one could fabricate a device to do a little guitar "traction" on it and pull that neck right out of that pocket.
     
  14. SG John

    SG John Well-Known Member

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    Other than an Iron, I don't have anything to heat it up properly. It would need to have a couple of frets pulled, holes drilled, then the glue steamed. Along with the iron. I don't want to practice on his bass.
     
  15. chilipeppermaniac

    chilipeppermaniac Well-Known Member

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    I gotcha for sure, John
     
  16. bea

    bea Well-Known Member

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    If the neck has moved, the glue joint should be damaged and week, so there is some chance to deglue the tenon.

    Some kind of strong lamp? Heating the body in the baking oven over some time to about 60° C?

    For re-glueing You'll need hot hide glue or fish glue. The latter is fluid and can be used at room temperature. With similar strength as hide glue. It is really fun to work with, an no, good fish glue does not stink.
     
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  17. syscokid

    syscokid Well-Known Member

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    60° C = 140° F
    Can the finish take this heat?
     
  18. bea

    bea Well-Known Member

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    Yes.
    The interior of a car in the sun can be hotter.
     
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  19. Raiyn

    Raiyn Well-Known Member

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    My mind just went there.........
     
  20. jjudas

    jjudas Well-Known Member

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    Getting ready to restore this early 60s acoustic that belonged to my 2nd ex wife's deceased father. She asked me to restore it. I'm happy to do it. Keith and I were good friends. Cancer took him at 53 in 2005.
    The back body panel is separating from the sides. It needs to be re-glued.
    20161203_175354.jpg 20161203_175450.jpg
     
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