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About MikeC

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    Violins, Varnish, forex trading & many other things.

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  1. That's a good question. I haven't learned how to measure density yet. How is that done?
  2. How common is it to have to plane the neck surface after it's finished?
  3. I've watched all of Davide's videos multiple times. They are a valuable resource! I think I could have done better in the recurve perhaps but I can't match his machine like precision and with experience I've gotten from the back plate, the belly plate should turn out better. Regarding the end block areas, when looking at CT scans and the Strad3D videos that area of the plate is very flat across the end block area and even beyond a little ways. I think one mistake beginners make as I did on my first VSO is making a scoop in that area i.e. not having it flat enough. I'll try to post some pictures later to illustrate.
  4. Thank you for the feedback Andreas. I'm learning a lot in making the back plate. Hopefully that knowledge will transfer over to the belly plate.
  5. After some more thinning.. the back plate weight is 125 grams which I think is still a little heavy. Audacity plot has peaks at 121hz , 370hz and 694hz
  6. well it's now at 125 grams
  7. No, in this build I'm not doing the old baroque method where the neck is already attached to the ribs. By functional I mean that I use the pins to quickly position the plate on the ribs for gluing. By using the pins I know the plate will be positioned correctly on the end blocks then that makes the rest much easier. Without the pins the glue up process would be more difficult and with hide glue you have limited working time. Maybe on the next build I'll go for baroque.
  8. I guess if I cut Fs in the back the violin would play in stereo? Actually thinking about it this morning it may be a bit thick still near the edges. When I get time tonight I'll examine the CT scans and compare to my arching and thickness around the edges. I think my arches may still be a bit full in the recurve area so may still need some thinning there.
  9. that made me laugh. Maybe a solid body next... It's strange, I think the grads are about right, a little over 4mm in the center tapering to about 2.5mm in the upper and lower bouts. I could go thinner but I thought it was about right so I'm not sure where all the extra weight is. Could it be that the maple is unusually dense? Or am I just unsually dense?
  10. I put them just inside the purfling since I do the purfling before I put the plat on the ribs. If I were to put the plate on first and then the purfling I would have the purfling go half way through them Strad style. For me they are functional not decorative... or maybe a bit of both.
  11. So the plate weight is 135.9 grams. That's a bit on the heavy side isn't it?
  12. Well since I'm using a Strad mould and have templates from the Titian poster I was thinking of going kind of thin and Strad like. Although I like some of the roughness of DelGesu so I may leave some visible tool marks here and there.
  13. I have to pick up a few things at the store tonight. A gram scale is on the list. I'm building from a copy of Strad's PG mould but don't remember the exact measurement off hand. Ribs may not be tight to the mould but they are close. What do you mean by compliant or resistant?
  14. For now I'm low tech so fingers will have to do. I don't think I'll get more involved than simple mode testing. For M5 385hz is a bit on the high side isn't it? I wonder should I try to lower it by thinning the plate some more.