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Thread: Bending Plastic

  1. #1
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    Bending Plastic

    Hello to all:
    What type of plastic is recommended?

    I have a challenge to place a 45 degree bend one inch from each end of a 1 inch wide strip of plastic having a length of 6-11 inches. The 45 degree bend must be exact. The thickness has not been determind (i.e. maybe 1/8 inch, 5/32 inch, 1/4 inch).

    Bracket should be: (Ideal requirements)
    (1) Rigid (ideally like phenolic) after bent.
    (2) Clear plastic
    (3) low water absorption
    (4) UV protection
    (5) Easy to bend with a one sided heat bending jig or cold bending.

    I tried polycarbonite (.220 and .375 inches thick). My one sided heating jig could not do it. Water bubbles too.

    I tried PETG. This material bends very nice. It is not stiff/rigid enough. The thickness was about 1/4 inch. There is to much flexing of the longer brackets, i.e. 6-11 inches.

    What tpe of plastic strips would do the job and still bend easy with srtong/rigid/stiff results, but not brittle.

    Please see attachments what these brackets look like separately and 4 placed together.

    I cannot have a flexing, wobbling or twisty non solid/rigid bracket system.

    Thank you for your help.
    Chuck Pool
    Cedar, MI
    http://www.cnczone.com/forums/attach...1&d=1240201312http://www.cnczone.com/forums/attach...1&d=1240201438http://www.cnczone.com/forums/attach...1&d=1240201491
    Attached Thumbnails Attached Thumbnails Bending Plastic-part2.jpg   Bending Plastic-part3.jpg   Bending Plastic-part6.jpg  
    Last edited by Chuck Pool; 04-20-2009 at 11:57 AM. Reason: Low response


  2. #2
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    What type of plastic for these brackets do you recmmend?
    Chuck Pool


  3. #3
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    Polycarbonate bent cold.
    An open mind is a virtue...so long as all the common sense has not leaked out.


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