Newbie here to foundry, melting, cnc.
I've been lurking for a month or so, done a few melts in my furness making cupcake ignots
I wanted to try something new, and I have access to copper and aluminium punchings from my work.
So I tried my hand at aluminium bronze, used %12 aluminium, balance copper.
I read a heap about machining aluminium bronze, with almost 99% of people sayings its as difficult as 316 stainless.
My setup was:-
2KW, 24000rpm spindle @ 24000rpm
1mm depth of cut
40% step over
1000mm per min feed
2 flute carbide 'aluminium' end mill.
Coolant is ethanol sprayed with a airbrush gun
it was easy as pie.
not sure why they say its hard to do... ?