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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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Shim Stock
On Friday, April 8, 2011 11:42:19 PM UTC-7, Harold & Susan Vordos wrote:
"whit3rd" wrote in message ... On Friday, April 8, 2011 2:51:42 PM UTC-7, Bob La Londe wrote: I bought a piece of stainless shim stock ... and it just occurred to me that I have no idea how to cut it cleanly Fastest material removal was with some mild nitric acid solution, but that's a bad idea if you don't have a fume hood, because there are some brown gasses involved. Nitric acid will not dissolve 300 series stainless. I was applying electricity; the passivating layer on the stainless was pretty easily breached, and then the nitric DOES attack the metal. I tried salt, too (not as effective as HNO3). There must be a good standard etchant, I've got a business card that's marvelously detailed, etched in stainless, from Acu-Line (phone 206-634-1618 in Seattle, WA, USA). |
#2
Posted to rec.crafts.metalworking
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Shim Stock
"whit3rd" wrote in message
... On Friday, April 8, 2011 11:42:19 PM UTC-7, Harold & Susan Vordos wrote: "whit3rd" wrote in message ... On Friday, April 8, 2011 2:51:42 PM UTC-7, Bob La Londe wrote: I bought a piece of stainless shim stock ... and it just occurred to me that I have no idea how to cut it cleanly Fastest material removal was with some mild nitric acid solution, but that's a bad idea if you don't have a fume hood, because there are some brown gasses involved. Nitric acid will not dissolve 300 series stainless. I was applying electricity; the passivating layer on the stainless was pretty easily breached, and then the nitric DOES attack the metal. I tried salt, too (not as effective as HNO3). There must be a good standard etchant, I've got a business card that's marvelously detailed, etched in stainless, from Acu-Line (phone 206-634-1618 in Seattle, WA, USA). I would be all gungho to do those with a CO2 laser. Then I want a laser CNC machine anyway. "Yes, dear I did need to spend five grand on EBAY fir a laser for my little CNC machine. I needed to engrave some stainless steel business cards." LOL. |
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