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  1. 25th February 2010, 09:14 PM #1
    stuffy
    stuffy is offline Senior Member
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    Question Circular saw blade to cut caravan annex?

    Help needed please.

    My parents are getting a new solid annexe for their van and need to cut a couple of panels to fit windows. The panels are polystyrene sandwiched by colourbond steel.

    Does anyone know if this can be cut with a circular saw?
    If so what type of blade would you recommend?
    If not what other method would you use?

    Thanks
    Steve
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  2. 25th February 2010 09:14 PM # ADS
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  3. 25th February 2010, 09:53 PM #2
    murray44
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    I have heard that you can cut colourbond with a normal circular saw blade put on backwards. The colourbond would be the tricky bit, the ply and foam would be easy.

    I haven't tried it, someone else may be able to confirm.
    So many ideas........so little skill........
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  4. 25th February 2010, 10:01 PM #3
    elanjacobs
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    You could try to find a metal cut-off wheel for an angle grinder that fits your circular saw.

    Never heard of the backwards blade but if you try it, do it SLOOOOOWWWWWLY
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  5. 25th February 2010, 10:24 PM #4
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    chambezio
    chambezio is offline Burnt Out Chip
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    A metal cut off disc will cut the colorbond alright but the red hot sparkes will melt awaya big amount of the polystreyne. I would use a normal circular saw blade on back wards. But don't use a tungsten tipped blade or you will tear the tungsten off and have shrapnel flying around
    Just do it!

    Kind regards Rod
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  6. 25th February 2010, 11:49 PM #5
    marker
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    There is a special blade for cutting coolroom panels.
    http://www.aisnational.com.au/produc...ectory_175.pdf bottom of page
    Mark
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