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  1. #1
    Join Date
    Oct 2017
    Posts
    11

    Good Polycarb finishes

    Anyone have any good recommendations for milling polycarb for a good finish. I'll be milling out a .250 deep window in a .375 thick piece of clear polycarb. I'll volume mill out the window leaving a few thou on z to run a clean up pass with a .250 downward spiral 2 flute endmill at maybe 6000 with like a .200 cut width. So there will be some tool paths left in the part. I know heat helps so maybe hit it with a torch for a second i don't know. Maybe spin it as fast as I can? 8000, largest endmill possible?

  2. #2
    Join Date
    Jun 2010
    Posts
    4252

    Re: Good Polycarb finishes

    If you go really fast ... you will melt the plastic and have a LARGE mess.
    Really sharp new cutters at a moderate speed, followed by polishing.

    Cheers
    Roger

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