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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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suitable gear material for backgear - SMALL lathe and homemade cutters
Folks,
A couple of questions if you don't mind... Scenario - I'm building some backgears for a Taig lathe (small lathe the size of a sherline - chuck is nominally 2.5-3" in diameter) and will be cutting the gears with a silver steel (Drill rod) parallel hob The bull wheel will be around 3.5" in diameter at most and the mating spur wheel will be around 1" (up to 1.5") The face of the wheels will be in the 10-12mm (3/8" - 1/2") range and the lathe uses a 350W (0.5 hp) motor off a 1/8" gates v-belt What would be a suitable material for the bull wheel which can be cut using a homemade cutter? materials I have available include: mild steel, aluminium, nylon, brass (if I can get the foundry up running again) I'm worried about using the home made cutter on mild steel due to reading about burning the cutter - or am I worrying for no good reason? Aluminium, brass and nylon are easier to cut, but I keep reading that aluminum should not be used for gears becuase it's deemd high friction, and would gall... any tips or suggestions? any machines out there of similar size with backgears - what are those gears made of? Thanks, Des |
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