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Thread: CNC cutting of Lexan and PVC

  1. #1
    Join Date
    Dec 2006
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    Santa Maria, CA., USA
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    CNC cutting of Lexan and PVC

    Looking for some CNC cutting advice for Lexan (.178" thickness) and PVC sheets (.5" thickness).

    What router bit is suggested for each material please - and do I presume that lower speeds and feeds are in order to prevent melting of edges?

    Any advice appreciated.

    Pete
    Last edited by Peter Meacham; 07-30-2010 at 10:16 AM.
    Trotec 25W Laser, ShopBot PRT Alpha 48 x96 CNC, Roland Vinyl Cutter, Compucarve CNC, Ricoh GXe7700s Dye-sub printer, Hotronix Clamshell Heat Press, Pad Printing Equip, all normal woodworking and electrical tools.

  2. #2
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    Peter, I'll have to recommend the O-Flute bit. Since switching over to the O-Flute, I've found it cuts most anything that's remotely soft, like acrylics, plastics, etc. I've not found much it doesn't cut and cut well.

    I was even cutting aluminum sheet with one the other day.

    I don't think you have to worry about melting lexan. Lexan cuts nice.

    O-Flute works great on PVC too.
    Trotec Speedy 300 75W Universal PLS4.60 with Rotary Attachment
    HP Designjet L26500 61" Wide Format Latex Printer
    ShopBot 48" x 96" CNC Router, Ricoh Dye Sublimation Printer
    Graphtec FC7000MK2-75 Plotter, Summa 48" Vinyl Plotter, Xenetech XOT 13 x 13 Rotary Engraver, Corel X5, Adobe Creative Cloud

    Real name Steve but that name was taken on the forum. Used Middle name. Call me Steve or Scott, doesn't matter.

  3. #3
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    Santa Maria, CA., USA
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    Scott

    Thanks for the input. Actually, I was uncertain exactly what an 0-flute bit was. I looked it up on the Onsrud web site and it looked to me to be a "straight" bit.

    So, that is what I used and it came out good cutting both materials. But, the straight bit may not exactly be an 0-flute - so, I am going to order a couple of the 0-flute bits as I will be doing more PVC for this local sign shop (now that I am their new best friend - with CNC capability).

    Pete
    Trotec 25W Laser, ShopBot PRT Alpha 48 x96 CNC, Roland Vinyl Cutter, Compucarve CNC, Ricoh GXe7700s Dye-sub printer, Hotronix Clamshell Heat Press, Pad Printing Equip, all normal woodworking and electrical tools.

  4. #4
    Join Date
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    The O-Flute's come in straight and spiral. The straight helps on some materials because it packs the chips back into the kerf, so it helps keep your vacuum holding the work down. The upcut O-flute will pull the chips out and works well also.
    Trotec Speedy 300 75W Universal PLS4.60 with Rotary Attachment
    HP Designjet L26500 61" Wide Format Latex Printer
    ShopBot 48" x 96" CNC Router, Ricoh Dye Sublimation Printer
    Graphtec FC7000MK2-75 Plotter, Summa 48" Vinyl Plotter, Xenetech XOT 13 x 13 Rotary Engraver, Corel X5, Adobe Creative Cloud

    Real name Steve but that name was taken on the forum. Used Middle name. Call me Steve or Scott, doesn't matter.

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