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  1. silvermon

    Polishing pen

    Depending upon how aggressive you wan to get, you can also use dowel rod (1/8 or 1/4") of hickory or maple dipped into diamond or carbide abrasive. The wood picks up the abrasive and you can work surfaces quite well. If you are trying to break a square edge, ceramic is the best starting place...
  2. silvermon

    Ease of inlaying phosphor bronze vs brass vs copper

    I think copper would be easiest, specially if you buy pure versus electric wire, which sometimes is alloyed to improve pulling strength. On the other hand, copper tarnishes quickly, and sometimes quite badly. Verdigris. There is a lot of information out there on brass and bronze. Have you...
  3. silvermon

    Help, please: Help! New Hermes ITF-k pantograph

    Generally used for lettering, using either single lip cutters or diamond drag points. Can be used for other pattern work, but you would quickly prefer a larger machine. Diamond drag points work by displacement, so the metal can't be too hard. Single lip cutters can be HHS or Carbide (several...
  4. silvermon

    Charge time for Jun-air compressor? (6 mins)

    That seems about right for almost any air compressor of any size, for an empty to full run time.
  5. silvermon

    Background dots

    Vallorbe Swiss is a very good manufacturer of files. I imagine the beading tools are quite good too.
  6. silvermon

    Background dots

    GRS, look for beading tools. Gesswein too.
  7. silvermon

    Surface cracks in sheet metal

    Usually an inclusion caused by carbides. That is why you may want to refine your metal more often. You can refine the metal in-house, but strong chemicals are needed.
  8. silvermon

    Surface cracks in sheet metal

    Forging is omni-directional in it's deformation. The metal flows in the path of least resistance. Rolling forces the metal in one direction. The result is that forging equalizes the stresses left over from pouring the ingot. The amount of forging you do is a choice. Keeping track by using time...
  9. silvermon

    Surface cracks in sheet metal

    Remelts increase the presence of carbides and hydrogen. Both embrittle the metal. You eventually have to refine the metal to restore the alloy.
  10. silvermon

    Surface cracks in sheet metal

    I don't think a mark from a marker would be fine enough to trace the problem. When I say some metal rolled over as opposed to inward, during the first couple passes; I am talking about an imperfection that could be as small as a few ten thousandths of an inch across, but at least usually more...
  11. silvermon

    Surface cracks in sheet metal

    Hard to say just from a picture, but it looks like your rolling mill has too high a differential in the roller speeds. Some difference in speed between the top and lower roll is normal, but if your machine doesn't have adequate mesh in the gears, then the upper roll can move to much slower than...
  12. silvermon

    Question: Andu Engraver

    I assume that Steve has trademarks on many of his product names. Trademarks are separated from patents, but administered by the USPTO as well, at the federal level. There are state level trademarks as well. As I recall, trademarks last as long as they are being used. It could be an interesting...
  13. silvermon

    Question: Andu Engraver

    Steve's patent pending on the fractal vise is undecided. He may or may not get a patent. His design offers a new solution to some old problems. I will repeat this part, "new solution to some old problems." That is the essence of patent law. If you think the original vise stands on its own as the...
  14. silvermon

    Question: Andu Engraver

    You can copy the original vise without issue. You can't copy Lindsey's vise without risk. Also, I think you are looking at this too conceptually rather than objectively. Getting a patent acknowledges any previous work, but rewards new advancements. The government, by protecting design...
  15. silvermon

    Question: Andu Engraver

    Lindsey's fractal jaw isn't patented yet. It is patent pending. If someone were to steal his design during the patent pending period, and he was awarded the patent, he could sue for damages. As stated in a previous post, the USPTO makes their decision on a patent free of influence, determined...
  16. silvermon

    Depression/ cracks in ingot

    Open molds are fine. The best would be, if you can get a large split mold, it can make a small ingot, but be heavier to retain the heat. When I started silversmithing (45 years) I used the same technique you are using, with the same inconsistencies. The first correction I made was to increase my...
  17. silvermon

    Depression/ cracks in ingot

    Your ingot mold is too cold. You need to place it on a hotplate at about 350-450 degree F. If you preheat the mold with a torch before melting the ingot, it will cool too much. The mold/ingot size you have to use for the mold to be big enough to reliably retain the preheat is closer to that used...
  18. silvermon

    How deep to engrave?

    Yes. I am a sterling manufacturer and have contracted many engravers over the years. In silver we typically use Western style engraving. The shading line aren't v-cut, rather vertical on one side of the cut and broad and shallow on the other. We used far less shading lines than gun engravers. I...
  19. silvermon

    Can niobium be wire inlaid?

    Brush plating is more difficult than it appears to be. I have brush plating equipment sophisticated enough for mil-spec work. I have done detailed work like what is suggested here. The results won’t be what is expected.
  20. silvermon

    Can niobium be wire inlaid?

    It would depend greatly on the metal it is inlaid to. The Niobium is anodized in a plating bath compounded to the color and the Niobium. The bath will most certainly cause a color change to most metals the wire would be inlaid to. Unlike anodized aluminum, Niobium starts losing it's color as...

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