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  1. Replies
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    Re: Is this mandolin beyond repairing?

    Nothing is beyond repairing, the real question is your second one; is it worth repairing?.
    Instrument of low market value can often cost more to repair then their market value. Of course there ore...
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    Re: Inside the scroll

    That's really all it does and I do it for that reason. A few grams here, a few grams there and we have a lighter instrument, and thus perhaps a more responsive instrument. (Of course, it saves more...
  3. Thread: corse spacing

    by sunburst
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    506

    Re: corse spacing

    In my first post post I mentioned that I see no functional reason for the strings of the courses to not be parallel.
    There is, however, the problem of a pair of strings 'buzzing' from contacting one...
  4. Thread: corse spacing

    by sunburst
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    Re: corse spacing

    I generally have the strings follow a line not parallel with the edge of the 'board, but instead follow path similar to the taper between the courses.
    As I mentioned earlier, I control the spacing...
  5. Thread: corse spacing

    by sunburst
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    506

    Re: corse spacing

    For mandolins, I just copy the templates I made from a '23 Loar with original nut and bridge.

    As I think about it, I see no particular reason that the courses could not be parallel as far as...
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    Re: fretboard support opinion?

    I've heard and read that many times, but my "education" tells me it is better to refresh the surface (by shaving, scraping, sanding) within 15 minutes of gluing rather than wiping with solvent.
  7. Thread: sap wood

    by sunburst
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    385

    Re: sap wood

    That appears to be a tradition from the classical guitar building community. It is a matter of aesthetics it seems to me. The white sapwood of many tropical woods, like rosewood, seems to be...
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    Re: fretboard support opinion?

    No major difference.
    In my opinion stability is the most important factor. Also, I try to make all material decisions with total instrument weight in mind, so I like to use the least dense wood that...
  9. Thread: sap wood

    by sunburst
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    385

    Re: sap wood

    The sapwood of maple is the part we use. The heartwood of maple (most species) is dark colored and sometimes not sound.
    We use spruce from just inside of the bark, so we don't distinguish between...
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    Re: A couple of build questions

    Sealing the inside makes some internal repairs difficult to impossible when things go wrong, it is of debatable and minimal value, and most of us don't do it.
    Gauze "reinforcement" of f-holes does...
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    Re: Choice of wood for ribs?

    I strongly favor the lower one in the picture; the narrower one.
    Why?

    -It has plenty of figure that will show up under a finish, the grain runs straight through the piece, and it is exactly...
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    Re: Breaking in or Opening Up

    For those to whom anecdotes are... well, anecdotes...

    https://newt.phys.unsw.edu.au/jw/powerhousetwins.html
    https://www.pnas.org/content/114/21/5395
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    Re: Old Safe-T-Planer, new cutters?

    I shouldn't post this because I'm not sure about it, but I have Saf-T-planer and I sometimes use the Stewmac version. The cutters look the same and they look interchangeable. I have not tried to...
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    Re: Sunburst practice/test - What happened here?

    I see a 'line' between lighter and darker coloring in you test piece. That can be avoided by always using a circular motion or other means of not leaving a definite line a the edge of your dye...
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    Re: Al Carruth scraper - Sharpening

    Be aware that maintaining the straightness of the straight side of the scraper as you grind the edge is on you. One of the first things I had to do with a Carruth scraper at my place of work was to...
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    Re: Al Carruth scraper - Sharpening

    I was anxious to try the Carruth scrapers but had not really used them until recently. I'm working outside of my own shop part of the time these days and we have the Carruth scrapers there. I learned...
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    Re: binding separating

    The binding has shrunken and pulled out of the curve. It cannot be successfully glued back long term unless it is made longer again. It can be stretched with heat, or a small piece can be added after...
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    Re: The real glue strength

    No.
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    Re: The real glue strength

    JB Weld is simply epoxy with metal powder mixed in (probably a little more complicated than that in reality). Plain ol' epoxy is about the same in a wood joint.

    As for the glue test; how many...
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    Re: The real glue strength

    As for "sound transfer", that is really not a concern. I believe we would not hear a difference no matter what glue is used.
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    Re: The real glue strength

    What is the value of the instrument?
    Sounds like a poor joint no matter what; a ruined dovetail made into a more-or-less straight mortise and tenon with gaps (poor fit). If the instrument value is...
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    Re: The real glue strength

    What is the joint? Lap joint? Butt joint? Other?
    What are the conditions? Hot? Cold? Wet and rainy? Indoors/outdoors?
    How was the joint prepared? Well fit glue surfaces or some gaps?
    How long will...
  23. Re: Help! Quick recommendation - Paasche airbrush

    I greatly prefer dual action. Much more control, IMO.
    I believe the one shown in the OP is the model that I currently own and use (looks like it, I'm not where I can know my model number right now)....
  24. Thread: Loose tuners

    by sunburst
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    Re: Loose tuners

    In reality, that is not quite how it works.
    When tuners are properly mounted, the string posts are deflected by string tension, but rather than forcing the gears together (or apart) there are two...
  25. Thread: Loose tuners

    by sunburst
    Replies
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    425

    Re: Loose tuners

    Depending upon the brand of tuner it can be normal or it can be loose screws. In order to tune correctly and stay in tune we must tune 'up' rather than tune 'down', as you said.
    If the tuners are...
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