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Unread 25-06-2014, 23:20
sanddrag sanddrag is offline
On to my 16th year in FRC
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Re: Building a cnc router

Quote:
Originally Posted by DonRotolo View Post
Contrast that with sheet aluminum (6061), with my 1/4" bit I can cut 1/4" thick material single-pass at 50 IPM...As long as the coolant mist and compressed air are on. Chip management is critical for Aluminum, or bits will break.
I take it this is slotting, full width, with an Onsrud single flute bit? Still, that seems like a rather hefty cut. FSWizard tells me to go something like 18,000 RPM at 34 inches per minute for 6061 aluminum, a 60 degree helix angle 1/4" single flute bit, in 1/4" 6061 aluminum, full depth, slotting. It says it will take 0.6 Horsepower for this cut. I wonder if my Porter cable would be able to do this cut.
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