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    notching braces

    Somerby
    By Somerby,

    Michael - any words of wisdom on how to manage the interlocked braces and end up with nice tight joints? Do you build them square and then shape them after?  Also, relevant to the glue question, how do you minimize the braces from telegraphing through to the top?

     

    Thanks!

    • 2 replies

    Glue for the brace.

    QVinCalgary
    By QVinCalgary,

    Do you use the same glue for the bracing (tidebond  original) or hide glue?  I have read that some luthiers strongly prefer hot hide glue for bracing,  Could you let us know where is the fact and where is the fiction?

    Thanks

    Quang

    • 4 replies

    Questions about top resonance and compliance

    Michael Lazar
    By Michael Lazar,

    I was asked whether I thin my tops to arrive at a fundamental resonance or whether I target a degree of stiffness. The answer is that I target the fundamental resonance at 123 Hz which is equivalent to B2 as a musical note. A few hertz above or below is OK. I will usually stop thinning if I haven't reached that frequency at about 1.8 mm.

    I was also asked what weight I use when measuring compliance. The answer is 176 grams. I use that weight because it was what Greg Byers was using during the master class i attended. back in 2001. 

    The longer I build guitars the more I am convinced that there is no magic formula but working with resonances  at the various stages of construction did seem helpful in building a level of intuition that helped me achieve consistency in my results I think.

     

    • 2 replies

    Chapter 5: The Plates

    conleym
    By conleym,

    This is where the plate joining magic happens! I thicknessed both tops, the Katz and cedar, to .115 of an inch. I cooked the Katz a second time at that thickness. Next, I ran the glue edges through my jointer to ensure there would be no gaps at the glue seam. I brought the back plates down to .085 and trued up the gluing edges. I use a specially constructed jig for the gluing, with pieces of parchment paper above and below the glue joint. To load the jig, I glue the edges and rub them together. Then, I place the parchment paper underneath and tighten the wheels to the right. The wheels are "eccentric," which means that their hole centers are drilled about 1/8 inch off center. That means that I can load the pieces in with the shorter wheel edge against the pieces. As I turn the wheel, it tightens the glue edge. I place clamps on a thin piece of oak on top of the glue seam so it can't pop up. Then, I tighten the wheels, screwing them down snug. A half hour later, I reverse the process, first loosening the wheels and then the clamps. I do this with the tops and the backs.

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    • 1 reply

    Duh...? What happened?

    the Padma
    By the Padma,

    Ya?   What happened?

    Me take a sabbatical for a while and everything changes...took me a while to figure out how to navigate dis here NEW site.

    Oh well ...it sure is looking  good though. Yes very slick indeed.

    Seems me "Official Padma" pages been relegated to the archives...probably best.

    But keep holding your breath  a few more months for the eminent resurrection of the all New and Improved  Padma and

    him ALL NEW WORKSHOP and him builds and him B.S.

    Is true!  Me shall be back.  But not today.

     

    blessings

    duh Padma

    • 3 replies

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