Don Noon

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About Don Noon

  • Rank
    It ain't rocket science... it's more complicated
  • Birthday 03/20/1952

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  • Gender
    Male
  • Location
    Carlsbad, CA
  • Interests
    Acoustics
    Violin construction
    Varnish
    Old-time fiddling

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  1. In stockpiling good expensive maple, I have run out of space to store wood, so I'm divesting of some domsetic maple that I will never use. Maybe it's fine for others. All non-torrefied, aged in air approximately 30 years. I have it listed on eBay, here. Ends Sunday March 14. If interested, follow the link for more info. This is being sold as a batch, not individually.
  2. Have you heard and played the Messiah to know that it's good enough for you?
  3. These are the ones I would list, and conveniently they are listed here... https://stringsmagazine.com/a-roundup-of-5-violin-shops-in-los-angeles/
  4. In addition to the 4 garlands on forms previously shown, I needed to get another one going for a client fairly high on the waiting list, so I made another one The blocks on and ribs thicknessed and waiting to be bent. Looking to some upcoming viola orders, I needed more maple big enough for my violas, and went shopping. And then torrefying. This is the box of wood after cooking (in a very hot blue LED light), and some ribstock that goes with it. I needed to saw off some of the ribstock to fit my chamber, and those are the blazing white pieces to compare to the torrefied color.
  5. You could double the edges to gain back height. The lowest serious violin I made was 14.7mm top arch... and tied for the top tone award at VMAAI. I have experimented twice with extremely low arching... one dead-flat, and the other just under 10mm. Neither was very good, but for different reasons. The flat one I managed to get the signature modes OK, but the sound was very midrangy and boxy. The slightly taller one had B1- and B1+ on top of each other and wolfy, but not horrid otherwise (but not great either). Bottom line... could work, but might be tricky. I'd double the edg
  6. Helicores are reasonably priced and don't have as much of the steel sound as most steel strings. They are a favorite of fiddlers.
  7. The Michelman recipe for varnish is a cold-mix, not cooked. I have never tried a cold-mix varnish, strongly influenced by what I've seen of cold-mix results... extreme alligator cracking (more like icebergs floating on a sea of wood), extreme wear, and the like. Somewhere between the included salts and non-cooked varnish, I think you'll find the problem.
  8. That would be an implication of the paper... although it doesn't rule out plenty of other things being of paramount importance as well.
  9. First-order physics: not. Structure vibration frequencies are mostly independent of static forces.
  10. I measure rocking frequency by clamping the feet in a small vise, tapping the bridge on one side and placing a microphone very close to the other side (side, not front/back). How exactly the bridge flexes and at what frequency in actual use is hard to say... the edge conditions are very different. But it gives some idea of lateral stiffness. Right now I'm using PETG as it is more stable than PLA, a choice I made for the other things I really intended to make, rather than printing bridges. If I was really going for success with printing bridges (which I'm not), I might try the wood or c
  11. Yes, details on the preparation matter. Like, "I baked a cake and it's gooey" lacks important information.
  12. Some 3D printed plastic bridges, with weights and rocking frequencies. #2, 4, and 6 worked acceptably well, although still missing something compared to the maple bridge. #1 was horrid, although I do like the aesthetics. It's hard to use material 3x as dense and 1/3 as stiff as maple and match properties... not even considering that it has ~2x damping.
  13. I know Molnar does, and I am working in that direction. For me, the major difficulties are: Making the model. It's a very complicated form. Fixturing and indexing to get all 4 sides to match up Tools to hollow out the pegbox and mill into the throat of the scroll. There are some long reaches with skinny tools, not the nicest thing. I'm currently partway thru all of the items, and have not cut a single chip as yet.
  14. Become friends with someone who has a large open yard out in the countryside, and go cook there. Just think how much grief you'd get from your wife if your closed vessel cooked in the house somehow blew up and caught fire. I wouldn't risk it.
  15. A very interesting plot that I have not seen before. However, I think it would be even more interesting to have the plot in absolute power, and not normalized to 1 for each instrument. The Strad plot illustrates what I have been harping about forever. If you look at the signature modes and anything below 1 kHz, it is smack in the middle of all the modern instruments in terms of response and mode frequencies. Only when you get above that, the huge difference is obvious. And it agrees well with the few Strads I have been able to measure: abnormally strong response between 1 and 2 kHz