Michael_Molnar

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About Michael_Molnar

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    Stargazer
  • Birthday 09/15/1945

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    Michael R. Molnar

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    Male
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    Warren, NJ
  • Interests
    Astronomy, History, Optics, Great Ideas, and Interesting People.

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  1. A natural drier is umber because it contains Mn. Check out the driers sold by Woodfinishing Enterprise. I now use Siccatif de Courtrai made by James C. Groves. It contains Pb and Mn which will turn off some makers. However, it is powerful. Just a few drops does it.
  2. Yes, @Geigenbauer, this is indeed a lot of fun. I love the test plates. You are on the right track.
  3. Thanks, Dennis. Very useful thread.
  4. My issue with templates is that they don’t tell me how to blend the surfaces between the templates. Therein lies the rub.
  5. @John Masters gave me a bunch of Condax’s violin wood. I found it useless.
  6. Please do some reading of old MN threads on this subject.
  7. Doing decent antiquing is difficult. I won’t even try it after seeing so many disasters at VSA shows. It is a major skill set as Burgess mentioned.
  8. Good suggestion that’s worth a shot.
  9. I had 2 or 3 break a few years ago and stopped using them
  10. I’ll hazard a guess that you are seeing the solvent dominating the fluorescence at the start. As it evaporates or dissipates the roasted rosin is left to fluoresce. I’d need to do some simple tests to evaluate that hypothesis.
  11. Not enough information. Give details about the varnish.
  12. I forgot that Sherlock Holmes was a research source. Yes, there are a number of papers that come up with googling. They explain how aged linseed oil eventually fluoresces. Old dried linseed oil glows and looks opaque under UV. Recently, I was rereading B&G and noted that Greiner p.29 said that the fluorescence takes a few years to develop fully. Varnish, however, glows on day 1 and remains strong for centuries. Do not confuse linseed oil with varnish. The fluorescence of varnish, new or old, is mostly due to rosin (colophony).