violins88

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About violins88

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    John Schmidt

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    http://jpschmidtviolins.com/mknife.html
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  • Gender
    Male
  • Location
    Laurinburg, NC
  • Interests
    Violin making, tool making, varnish making, casein emulsion grounds

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  1. Ok, they’re not, but how does one explain the observation that over time, my violin string loosen way more than seems possible. The strings come out of the pegbox. Way out. Granted, you would not leave your violin in my house. When we go out of town, we turn the air conditioning to 82 F or more. So we have large swings in temp and humidity. Still, I can’t believe what I see in the strings. My current explanation is that the strings are living beings and are seeking food or social interaction.
  2. Thanks. That makes sense.
  3. The cross archings are not in the normal places. The arch in the upper bout, usually Called B, is just missing. Why?...
  4. Manfio, Have you described your varnish/ground process on mnet before? thanks
  5. violins88

    sugar seal

    Right. A working violinmaker has real work to do to pay the bills. Retired hobbyists like me can try to get simple answers. I do have a specific question for you about coloration, but I prefer to keep it private. It might be a really dumb question. I will email you.
  6. violins88

    sugar seal

    We have experienced people on here. Could we agree on a testing protocol to determine whether honey, sugar, or gelatine is too hygrscopic for violin making? how about: test strips of spruce and maple, 3 mm thick x 3 cm wide x 15 cm long. Nothing one side. Test sealer on the other side. Then one or more coats of dewaxed shellac over the test sealer. Measure the xylophone frequency of each strip. Place the samples in a box in which the humidity and temperature varies. Record humidity and temp continuously for 30 days. Measure again the xylophone frequency. (Temp and humidity must be the same as the original measurement.) Observe any visual and tactile changes. Analyze results.
  7. I use 40 weight rayon embroidery thread attached to a 65 gram weight. See demo here: See 1:40
  8. I don’t know anything about bows, but I think I have heard of Fetique.
  9. Adrian, I sent a pm to you. john
  10. I updated the pdf file http://jpschmidtviolins.com/violin_notebook.pdf This one has larger pages. However, the file is 19 mb. I plan to post the old 5 mb file here: http://jpschmidtviolins.com/violin_notebook_small.pdf
  11. Sospiri, The most important thing is not the neck angle, from a physics viewpoint. The downward force is. Assuming string length and tension are standard, the 158 degree angle alone determines the downward force. Review your first engineering course in statics.
  12. 1. Czech book Umeni Houslaru, in Czech language—- $20 + shipping. (Violin Makers) 2. The Restoration of Paintings by Knut Nicholaus — $10 + shipping mailing from zipcode 28352