Ok i have been reading anything and everything i can get my hands on about milling acrylic. I am with I know many of you out there trying to dial in some feeds and speeds for cutting and milling acrylic.
I have seen articles in which people have cut into acrylic with feeds from everything from 30ipm to 100ipm, Along the same lines they claim there spindle speeds cover a range from 3k to 12k. I have read the formulas and used them that talk about chip loading and such.
I have been doing my own testing now for the last day and a half and i still cannot seem to find that right mix to actually get chips from the material. I first got build up on the bit, and now no build up but lots of weld back. The weld back is not bad it can be removed from the part but chipping is the goal.
Please if you have had success cutting into acrylic lend a helping hand.
I am using a two flute 3/32 straight end mill cutting a .05 depth 3/32 groove into acrylic.
Jake