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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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End mill life expectancy
I was making those turners' cubes, from 2 inch aluminum blocks
(6061). I used a 1/4" end mill. After making about 4 or 5 cubes, the end mill broke. My question is, how much life expectancy shoudl I expect from a 1/4" end mill? Carbide? HSS? My parameters are something like 2,000 RPM 6 IPM Flood coolant (I do not always do a perfect job at directing it, but I always try and spray it from all directions. |
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