JoeDeF

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  1. It works, or you can buy a dedicated CA solvent (which has additional ingredients to soften the CA). I have used several brands, and currently use FastCap 2P•10 Debonder, which works very well.
  2. I'm not sure, but the clothespin looks American, ca. 1985 0r so....
  3. It is my (limited) understanding that tartini tones are created by nonlinearity. That nonlinearity could be in a mechanical object like the instrument or your ear, but I have read that air can behave in a nonlinear fashion. Difference tones don't tend to show up in measurements. As a mental model just for visualization, I think of two colored lasers being beamed into a fuzzy lens that partially outputs the mixed waves, yielding a third color. If you take a picture of the lasers with a clear lens (measurement instrument), you only get a picture of the two colors, not the mixed third one. Again, just a mental model. In pianos, I do tend to hear difference tones most loudly when there is some defect in the soundboard structure. I assume that the defect creates a more nonlinear condition. In fact, when I hear them prominently, I usually start to look for soundboard cracks, loose ribs (braces, more like a series of bass bars), the soundboard separating from the inner rim, etc. I often find such a defect, though not always...which is a very roundabout way of saying that you could inspect your violin's interior very carefully for any small gluing defects, etc. If you like it as it is, I guess you wouldn't want to "fix" them, but it would be interesting to know if they are there.
  4. Brad, you are right if one of them is reverse-threaded. Then it's essentially like a turnbuckle.
  5. That's a cool idea. Just to be clear, it'll only work if the insert's outer thread is a different (probably coarser) thread pitch than the eyelet's (and the insert's interior) thread pitch.
  6. I didn't answer earlier, Ernie, because I don't have the violin one. I do have one on/in my cello, and I find it to be very useful. Actually, I've had two. In my first one, the tube contraption came apart after a while. But they promptly replaced it with no fuss, and the new one has been fine. I definitely did miss it while getting by with the old button-style wolf eliminator from the time my first Krentz went bad till the time I got the replacement one.
  7. Thanks! Beautiful texture following the flames on the back at about 12:38!
  8. JoeDeF

    Reshaping neck

    The recipe posted here by Matthew Noykos is straightforward and works for me: https://maestronet.com/forum/index.php?/topic/324250-neck-sealer/&do=findComment&comment=511743 https://maestronet.com/forum/index.php?/topic/324250-neck-sealer/&do=findComment&comment=511791 There are some good ideas by other participants in that thread as well....
  9. Thanks for the recommendation, Peter. I did some initial reading about the concepts, and it looks like they will be very useful in a variety of contexts going far beyond shop size and layout.
  10. Why make it when there are so many jars found in attics available cheaply on eBay?
  11. JoeDeF

    doctor+ violinist=

    You can imagine how it could go jumping out by watching this (though the little bugger is well controlled in the video):
  12. It sounds like the remaining sawdust after your instrument collapses. Spalting is a web of competing fungal colonies, all of which are (or were, if the wood has been dried) munching on the wood and severely weakening it. In terms of instrument use, spalted wood is primarily found on the showy but not really structural tops of electric instruments, where the underlying (non-spalted) wood does most of the work both in resisting string pull and helping to determine acoustic impedence (controlling how much of the string's energy is absorbed by the rest of the instrument). When spalted wood is used for tops of electric instruments, it is often saturated with CA glue or a penetrating epoxy to strengthen it enough to retain its shape and integrity during the life of the instrument. Some spalted wood is soft enough that you can easily dig it out with a fingernail.
  13. I think he specialized in electrics….
  14. I would guess that the extra "ears" are in effect resonators designed to suck up and dissipate high frequencies before they get to the corpus, to mellow out the sound. Is that correct?