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IndustryArena Forum > SignMaking > Signmaking Topics > CNC BLUE FOAM INSULATION HELP!

Thread: CNC BLUE FOAM INSULATION HELP!

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  1. 11-08-2011, 06:49 PM #1
    bamacnc
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    CNC BLUE FOAM INSULATION HELP!

    I need help with bit selection on 1 inch blue foam cutting. Using o spiral and cutting about 1900rpm at 300ipm cutting fine on y axis but pitting on x axis
    is there a better bit or should i be using compression bit .
    Cutting all the way through using 4 passes
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  2. 11-08-2011, 07:26 PM #2
    ger21
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    If it's really 1900 rpm, then it should be much faster. And make sure the tool is brand new.
    Gerry

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    http://www.thecncwoodworker.com/2017.html

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    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
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  3. 11-09-2011, 03:19 PM #3
    bamacnc
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    Blue Foam

    I went to a double spiral and ran at 2700 rpm and went 75ipm this helped a lot is there any thing else you recommend
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  4. 11-12-2011, 05:30 PM #4
    Joe Crumley
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    Bit selection isn't as important as using a new, fresh, bit. I've discovered a bit at Harbor Freight which is HSS upcut that works very well. On 1" foam these 4" bits only need one pass. You should end up with a very smooth clean edge. I like HSS for this kind of work because they are much sharper than carbide.

    Joe Crumley
    www.normansignco.com
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