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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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carbide vs. solid carbide? Cheap carbide?
In article , elson@pico-
systems.com says... Ed Huntress wrote: g It's too bad that term has stuck. I've talked to a lot of people over the years who don't realize that "solid carbide" actually is a sintered material, with tungsten carbide and tantalum carbide particles cemented together with cobalt and/or other metals. The genesis of the non-solid variety, as far as I know, is that in the beginning, there were cutters made with steel shanks and the cutter was welded on, probably during the sintering process. I know this was true with carbide circuit board drills. I'm sure nobody makes them this way anymore, at least in modest sizes up to a couple inches diameter. Dunno about end mills, but router bits are still made with carbide cutting edges bonded/welded/brazed/magicked to steel shanks. Benefit is that the steel shank is much less brittle, which is highly beneficial with a handheld tool. |
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