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  1. R

    Greetings from Croatia

    This HSS is not specifically sensitive against overheating. I even silver soldered pieces of it to brass supports, and they showed no significant decrease in hardness. I think this is a main property of High Speed Steel (HSS), it was developed to keep it‘s cutting edge when working steel at very...
  2. R

    Greetings from Croatia

    Hi, I buy HSS blanks from https://www.zujeddeloh.de/produkte/drehen/werkzeuge/drehstaehle/hss_--509/drehstahl_rund--_4942.html They are a little above 100 mm (4 inches) long. Tungsten carbide blanks I got from tribo.de. They proposed D2,00h6x330 Hm-Sorte U12 K20-K40 330mm long. I can‘t...
  3. R

    Illustrator for ipad

    Vectornator. Free and (meanwile) well documented Vector Graphic app for Mac and iPad. Use 71% spirals for the backbones… The functions in Adobe Illustrator that I would like (e.g. smoothing a vector by stroking it with the pencil) where not included in the iPad version when I tried it last...
  4. R

    Greetings from Croatia

    Here‘s the set of sharpening templates I made myself: (left to right) 70°; 90°; 105°; 120°; flat graver, round graver For each graver geometrie there are two templates. The small templates are used to grind the shape onto the blank. I use 2mm round HSS blanks, of which I glue 5 pieces at once...
  5. R

    Apple Pencil

    Apple Pencil One (with lightning plug), I guess… The version two is rumoured to have no battery but a capacitor… There is another interesting thing about iPads / Apple pencils: do NOT bring them close to Helium gas. It creeps inside and disturbs their clocking devices. My colleague (AP1) and me...
  6. R

    Question: treading on sensitive ground...graver formulas

    A nuts and bolts approach, using the dual angle fixture as a calculator: Take a piece of square mild steel of 3 or 4 mm square. Clamp it in the Dual angle fixture, such that the corners of the square profile are up and down if the tool rotation is set to zero. Turn the tool rotation angle to...
  7. R

    Greetings from Croatia

    Asian pneumatic engraving machines: Your mileage may vary. I bought the asian version of a classic GRS machine before I knew about the engravers’s café. So you may forgive me this purchase. I had a new rotary valve body made from Iglidur G as the old one was leaking like hell, replaced the speed...
  8. R

    Greetings from Croatia

    Correct and consistent graver sharpening is the key to self learning success, I would say. Especially if you’ve got no teacher to show you the ropes, as it is in my case. I started out with the same simple graver sharpener You showed us. I set the angle with an angle gauge. It works for the...
  9. R

    Greetings from Croatia

    I was in a comparable situation in Germany, I just waited patiently for the right pieces to appear on ebay. It took literally years. And yes, one gets sidetracked by building equipment like sharpening templates, supports for different sharpening stones, a power hone, a first turntable, another...
  10. R

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

    At the „12-XX“ units, 12 stands for two compressor heads, the 3 non-return valves are critical. One of the three could fail, whithout you noticing it immidiately. Just the pumping capacity decreases. They are easy to take apart and clean, buy the replacement gaskets and O-rings before trying to...
  11. R

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

    Hmm, attaching the manual did not work, it is too large. Here‘s the link instead: blob:https://usermanual.wiki/b2e17bc9-8ecb-430d-a8d2-5fca1c666a5c
  12. R

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

    The Manual states close to 6 min for a 50Hz and close to 5 min for a 60Hz model. I‘ll attach the manual. Cheers, Ralf
  13. R

    Background dots

    I could just speak for beading tools, which I use for stone setting in gold an silvber. Mine (from Busch, a german brand) have got almost knive-sharp edges around the “bowl”. When using this type in steel, you probably have round off this edge first, else it might break. One could also get a...
  14. R

    Graver blank Help!

    I‘ve got the same handpiece, by the look of it. The clamping mechanism of mine works only for a small range of tool sizes. Check with drill shafts of different sizes, for example. I work with round 2mm HSS and carbide blanks, I‘ve made a spacer to get them clamped properly. The GRS QC holders...
  15. R

    Comfortable House Barcelona

    Hi, is this one of Antonio Gaudi‘s haouses? Cheers Ralf
  16. R

    18KY gold when filed becomes red

    Most 18K yellow golds contain 10-15% copper. When you anneal those, copper oxide forms at the surface. Usually one pickles the annealed gold in an acid solution, which removes the copper oxide and leaves a copper depleted layer with a pale yellow or even greenish tint. Emery paper cuts throug...
  17. R

    Font Question

    Troubadour Pro Engraved is not a 100% match, but comes pretty close. May be used for design, if you cut the the long tails off at some characters. Found it with „what the font“ on an iPad. Cheers Ralf
  18. R

    Depression/ cracks in ingot

    I cast small amounts of gold for rolling in a piece of wood, where I have cut a depression in before. Due to it‘s high surface tension, gold will form a rounded top and ends anyway. The wooden mold is reusable a couple of times, getting a bit larger each time. No preheating required, free...
  19. R

    Help, please: Transfer wax alternative

    The procuring problem may not be limited to Italy, I‘ve just scanned some GRS carrying shops in Germany, they either don‘t list it anymore or denote it as „no longer available“. If you could still buy it in the Netherlands, replenish your stock…. Cheers Ralf
  20. R

    Engraving finishes

    Roger, thanks for the praise for France. I came there 24 years ago for a job, and stayed. Meanwhile I work again in Germany, still live in France, and try to combine the best of both countries. The Alsace is a very beautiful region, so are many other regoins of France. I like the South a bit...

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