Re: A question about turning aluminium
Thinking you probably got brazed carbide tools which are just flat topped. They suck for alum, grind up some hss blanks with a nice little nose radius and high rake angle, extra sharp and polished a bit if you can.
SFM of around 200 is good for alum and hss bits. so a 1" dia would be 800 rpm. can go faster but that should be a good starting point. if you save up and buy some carbide insert tooling someday with alum specific inserts can push well over 1k sfm.
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Jeff
Last edited by pugs; 03-11-2012 at 06:25 PM.
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