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someandy

Wheeled Inchworm

by someandy Jul 21, 2013
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Let's get some motors mounted on this guy, get him rolling across the desk. Or even a wind up toy would be cool!!! love the design!!

Printed fine but I can't get it to roll very well.

Good to hear it printed well. The slick plastic makes the wheels slide around and not roll well. They need more traction. I was able to get the wheels to roll better by wrapping them in electrical tape. You could also try putting rubber bands on them.

I've got some ideas on improving the wheel design. More to come.

I've seen a groove around the wheels to fit a standard o-ring before. The o-ring probably only needs to protrude about .020-.030" I'd think, though I've never made them before myself.

The overhangs on the bottom are quite steep. How did you print them without support?

The one in the picture was sliced with Makerware and printed in PLA with .2mm layers and 2 shells. The bottom edges came out nice and smooth. I also tried a print sliced in skeinforge. The skeinforge version printed fine, but the surface was a little bumpy on the bottom overhangs.