Friday, February 16, 2007


Simple Machines

Hi everyone! Great work so far!

I've been thinking for a while now that repraps (and more importantly, repstraps) aren't very good at making complex machines, like gears - despite heroic work by Vik. Simple Machines are much easier. To that extent, a co-worker and I are prototyping our repstrap with block, tackle, and capstan based cartesian robot. Until we can get some photos taken, I've sketched a design for an easily rep'd structural element, which can be 'stacked' to produce structures of any length. All pieces are flat, circles represent holes, the small piece is meant to connect multiple sections using the holes on the large rectangular pieces, using nuts and bolts, or plastic rivets.

Can you give me an idea of the size of these components?
It's an idea mostly, but I suppose implementation depends on the resolution of the reprap... with current ~.5mm precision, something like 10cm or more for the long axis of the rectangle seems do-able.
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