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Thread: Team Coolspeedbot: first feather weight robot

  1. #161
    you wouldn't happen to know the density of HPDE?

  2. #162
    About 970 kg/m^3, just less than water.

  3. #163
    thanks Rory

  4. #164
    Ok so I did the Maths and looks I might have to use HPDE in select places instead of Hardox. I knew this might have been the case but still a little disappointed.

  5. #165
    You could always try thinner hardox. 5mm is really quite thick for a featherweight, especially all over. Carbide has 5mm hardox side armour and a 3mm raex base, and that's a heavyweight.

  6. #166
    Hummm, might look into it but I can only go 1 or 2mm thiner at best.

  7. #167
    The thinnest Hardox 450 I have worked with is 1/8" or 3.2mm.

    I heard about thinner stuff, but never had the pleasure to see it.

  8. #168

  9. #169
    After another bit of Maths and some tweaks with the CAD I think I got a bot that should be possible to make. with the bot using 4mm hardox instead of 5mm it can free up weight. Now I have emailed K-cut about cut tolerances and got a response, but I wanted to check with people here.

    Should holes be made lightly bigger then I need them to be and add a millimetre or two around the parts to insure they are not cut too small?

    Screen Shot 2017-05-26 at 18.56.14.png

  10. #170
    Yes. It's a huuuuuge pain when you have to enlarge the holes yourself.

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