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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 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 without curling or damaging the edge. Well, tinsnips are OK, a full bench shear is better, and if the edges matter I've used etching after putting a pattern on in Kodak photoresist (the spraycan type, UV exposed...) like printed circuit fabrication uses. 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. |
#2
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Shim Stock
"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 without curling or damaging the edge. Well, tinsnips are OK, a full bench shear is better, and if the edges matter I've used etching after putting a pattern on in Kodak photoresist (the spraycan type, UV exposed...) like printed circuit fabrication uses. 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. Fact is, it's 300 series that's used to contain and dispense nitric in volume. (55 gallon drums and smaller). Harold |
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