Bill Yacey

Members
  • Content Count

    5141
  • Joined

  • Last visited

  • Days Won

    4

Everything posted by Bill Yacey

  1. Has anyone ever considered or tried Cocobolo? This is a very dense, springy wood.
  2. International Harvester of America? :)
  3. I use an outside mold, and am very happy with the results. My ribs come out consistent, and because this is what I learned on I am very comfortable with this method. Once the all the corners and blocks are glued in I glue in a temporary brace Made from scrap wood that holds the rib outline to form. The whole rib assembly is then removed from the mold, and linings are easily glued in at this time. Once the ribs are glued to the top plate and the neck mortised in (I always close up the corpus with the back last) the temporary frame is removed. I used an inside mold a few times and found it to be
  4. The person I learned from would rough out the scrolls, pre cut the ribs, linings blocks etc. and have the plate blanks laminated together.
  5. I have a little pedestal that I clamp to the table of my drill press that sticks up a few inches and is about 1/2" diameter, with a leather pad glued on top. I use a 3/8" drill bit and set the maximum depth from the pedestal perhaps 1 mm or 2mm bigger than what the finished thickness shall be. Then you start drilling holes. Once you have the plate riddled with a bunch of blind holes, you can now proceed to remove the remaining wood easily with a gouge, using the blind holes as a depth guide. This also prevents long pieces of wood splintering out if the grain happens to be running on a downward
  6. Perhaps we need a valium emoticon... Why is everyone getting so testy about the soundpost length in Yuen's violin? The world still turns and the seasons are still occuring in the right order. Besides, it's his violin to do with as he pleases. I sometimes look for advice after completing a particular task trying to find a more efficient way of doing the work. Sometimes advice received from some I reject because it appears to me to be of lesser merit than what I figured out on my own. Seperating the wheat from the chaff is part of the learning process. I can't say for sure, but I doubt
  7. quote: Originally posted by: Darren Molnar Speaking of coffees, do any other canuk violin makers share my addiction to tim hortons? At some stages of the building process, I swear you can see a correlation between my progress and the count of tims cups! hey, maybe i could get a sweet commercial deal out of it! I find Tim Horton's a little on the bitter side. It probably would make a nice pre-stain on a violin though!
  8. Tamarack fenceposts will produce the best sound to a smashed violin, and the post should be struck on the north side where the grain is at the highest density. This is of the assumption the post setter aligned the posts with the cardinal points of the compass. If a fencepost of this type is found on or around a golf course, so much the better. This is known as coarse area tuning. Now how exactly did this thread go from soundpost to fencepost? Sorry Yuen!! We're getting off subject here.
  9. quote: Originally posted by: yuen English is my second language. I understand now. POS (I cannot help not laughing) Cantonese or southern Chinese. You know the difference? I know there are various different dialects in China, but I am unable to tell the difference myself. My ancestors transplanted the family from Ukraine to Canada over a hundred years ago, so my experience with Chinese is very limited aside from eating at some very good dim sum resteraunts.
  10. I know that some are saying"leave it", some say "Take it to a professional", but I commend you on your desire to learn. Learning on a cheap instrument and making some mistakes along the way is better than experimenting on a valuable instrument. We all had to start somewhere, and I am sure there isn't even one professional that hasn't made a disastrous mistake at some time or other. Keep asking questions and learn all you can or want. This appears like a good place to learn and there are many talented and experienced people on this forum that are willing to help.
  11. "Piece -of-s--t", an English colloquialism of sorts. What is your first language Yuen?
  12. I knew one maker that used to advocate if you had a POS instrument, take it out back and smash it against a fence post. Then glue the pieces back together and re-assemble. The instrument will be found to have a much improved tone
  13. quote: Originally posted by: nashville violins Soundposts are rarely too long. If it is in there, in the right location, and you don't see any evidence that it is too long, then leave it alone. That said, there is good chance that it doesn't fit properly. Soundposts are rarely perfect for many reasons. I would STRONGLY urge you not to attempt adjusting it yourself. I agree for the most part, but I have found many posts too long. Usually some DIY'er replaces the original one thinking it was too short because it fell over for whatever reason. Reasoning being what it is, it must
  14. If you can fit a shorter post sitting where it should, the one you have is probably too long. Properly fitted in the proper place it should just be snug enough not to fall over without any string tension. Don't wedge it in too tight, otherwise you deform the top and risk cracking the top and/ or back. A post that's too tight tends to kill the bottom registers and offers a nasal sound to the upper strings in my experiences. Of course, some violins sound this way with a correctly fitted post, so no matter what you do with the post the problem won't be corrected.
  15. What concentration of nitric acid would I require for coloring resins for oil varnish? I want to make sure when I call up the local boyscout troop to supply me with some that I'm not asking for an absurd quantity or concentration. Thanks
  16. By narrow spectrum , I meant in comparison with the total visible light spectrum. According to scientists, due to the ozone layer depleting there should be more UV energy arriving at the earths surface. The other great variable is of course the amount of daylight hours at a given latitude. I'm sure in Italy they had a longer summer season than what I experience here in Canada, although our summer days are longer. Surprisingly even on hazy days the UV index can still be high enough to promote sunburn, so it must penetrate average pollution and cloud effectively. The thing is, you can't choose t
  17. I don't know how you could ever test this. There are so many variables, and unless you could produce a number of identical instruments I don't think any conclusion may be reached. The frequency of the UV doesn't vary as it's a narrow bandwidth of the light that falls within the UV portion of the spectrum. The intensity or amplitude however does change, and this is where the most difference would be found. When you get sunburnt, it can be a deep tissue burn because the UV wavelength seems to penetrate deeper into the skin than other longer wavelengths of visible light. And so
  18. Quote: Sample of varnish? If you get it from an old instrument, who knows it is not contaminated. Or the chemical which was used in the time of making the instrument remains there for you to take sample for analysis. You cannot stop people (owners) messing around their instruments. Perhaps the would require a number of Cremona's finest for shredding to ensure accurate test results!!
  19. Jokingly I told a friend of mine once that the whole mystery could easily be cleared up. All that's required is someone to put forth a sacraficial? instrument that can be run through a tree shredding machine. This would provide plenty of good samples that can be distributed to various researchers for wood and varnish analysis. All that's required is a volunteer. Anybody?
  20. I prefer wet. upon drying the few hairs that are slightly on the loose side seem to shrink up to their own tension. The hair also seems to be easier to handle while tying off because it tends to stick together in a uniform ribbon after combing out.
  21. By the way, propolis in ethyl alcohol is an excellent antispetic and promotes very fast healing. I keep a jar on hand for such mishaps. In fact, it works better than anything commercially produced salve.
  22. Albert Fisher has an article on the Southern California Violinmakers Association website showing how to make scroll gouges from old hacksaw blades. You might want to give this a read. http://www.scavm.com/gouges.htm
  23. I have tried Purple Heart, but I found the grain to be too open for my tastes, and the purple tended to eventually fade to a sickly brown under varnish after a number of years. Wenge and Paduk also tended to be too open as far as the grain, and Wenge wood fibre is quite stringy. There are many beautiful hardwoods available that do indeed make a good violin. Bloodwood is one that I was considering to look at recently.
  24. I have noticed some of my samples are showing cracking. If it's thin enough that it just soaks into the top layer of the plate, the cracking shouldn't be a concern. I was going to try and amalgamate some of Fulton's propolis soap with the Casein ans see if it will prevent the cracking.
  25. Sodium Nitrite is available from butcher supply houses. It's used for curing meat. I have been experimenting with Casein; it forms a very hard, tough finish with good transparency. After drying, it seems to be impervious to water and oil. Luis, is it the rosin oil that brings the reeds out on the top?