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14-11-2018 #1
I am looking for a little guidance on feeds and speeds with a 2kw 3040 size gantry router (not chinese - this one has 20mm hiwin linear rails).
I want to take a light skim over a large area of ali plate. (no idea what grade it is).
So after googling about and looking at the feed and speed calculator on littlemachineshop's site, it appears that if I am using an HSS 12mm 4 flute endmill, the spindle speed should be very slow at 1600 rpm and the feed also slow at 275 mm/min.
Switching to a carbide endmill, a much higher spindle speed, 7200rpm and much much faster feed of 2800mm/min.
Does that sound right?
I have seen people using very fast spindle speeds and feeds (16k prm, 4000 mm/min) but not sure with a 12mm cutter?
Any general advise regarding this topic?
Obviously lube/cooling comes into play here, but initially I would like to run the machine dry or with a minimal mount of lube.
I am looking at taking a very shallow cut as I am just getting the plate flat, so no more than a 0.1 or 0.2mm cut.
Any advice welcome.
Cheers!
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