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Smooth cuts in Alumalite

Discussion in 'CNC Routing & Laser Cutting' started by Stonehouse, Jun 12, 2006.

  1. Jun 12, 2006 #1
    Stonehouse

    Stonehouse Member

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    Nov 29, 2004
    Jamestown
    Hi.
    Just cut some shapes out of 1/4 in. Alumalite and as usual I find that the corrugated plastic doesn't leave a very smooth finish. Any suggestions on spindle rate and type of bit to get the best cut. I used a straight 1/4" bit at 18000rpm spindle rate..
    Thanks.
     
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  2. Jun 12, 2006 #2
    jayhawksigns

    jayhawksigns Very Active Member

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    Jan 8, 2005
    Kansas
    Which direction are you going???

    I found that changing the direction of the cut helped a lot in reducing the number of the "flags" left by the corrugated plastic. I cut with a 1/4" end mill at 21,000rpm.
     
  3. Jun 12, 2006 #3
    Dennis Raap

    Dennis Raap Active Member

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    Oct 5, 2003
    USA
    I have the same thing. Haven't come with ant thing that works yet, I usually just take a utility knife and trim as best as I can.
     
  4. Jun 12, 2006 #4
    Dennis Raap

    Dennis Raap Active Member

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    Oct 5, 2003
    USA
    I have to cut some tomorrow I will try your settings Matthew.
     
  5. Jun 12, 2006 #5
    Stonehouse

    Stonehouse Member

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    6
    Nov 29, 2004
    Jamestown
    I've gone both ways (so to speak) conventional and climb milling and found climb to be a little better.
     
  6. Jun 12, 2006 #6
    jayhawksigns

    jayhawksigns Very Active Member

    1,209
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    Jan 8, 2005
    Kansas
    Yep, its better but still no cure for the problem. Thats why I prefer using Dibond like material or solid aluminum.
     
  7. Jun 12, 2006 #7
    Stonehouse

    Stonehouse Member

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    Nov 29, 2004
    Jamestown
    Thanks, everyone for your input.
     
  8. Jun 12, 2006 #8
    PMG

    PMG Very Active Member

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    Feb 1, 2005
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