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  1. #1

    Join Date
    Jan 2020
    Posts
    2

    Removing Tool Marks in Acrylic

    Hello,

    I'm relatively new with CNC work. I'm pocketing designs in mirrored acrylic, and I'm wondering if there is a good way to eliminate the tool marks left from the path in the acrylic. The attached photo shows the marks I mean. I'm cutting 1/8" thick acrylic to a depth of 1/16" with an Amana Tool 51517-k Spektra Coated single flute down cut bit recommended to me for plastic cutting. I'd prefer not to have to do any sanding or buffing by hand if possible. Thanks!

  2. #2

    Re: Removing Tool Marks in Acrylic

    The best way is not to generate the tool marks to begin with, I use soybean oil, just brushed on or applied with an oiler, seems to work pretty well. Also keep the chips evacuated so they are not being recut.

    Also Google: flame polishing acrylic
    Jim Dawson
    Sandy, Oregon, USA

  3. #3
    Registered
    Join Date
    Mar 2008
    Posts
    548

    Re: Removing Tool Marks in Acrylic

    Use an up cut bit for pocketing. And play around with finishing passes.

  4. #4

    Join Date
    Jan 2020
    Posts
    2

    Re: Removing Tool Marks in Acrylic

    Thank you Jim Dawson, I will try those!

    - - - Updated - - -

    Thank you warrenb, I'll try that too!

  5. #5
    Registered
    Join Date
    Jan 2007
    Posts
    510

    Re: Removing Tool Marks in Acrylic

    I've waved a flame gently over cut acrylic and removed a lot of the cutting marks. ( hand held gas torch)
    It might pay to practice on scrap before you go balls deep....lol

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