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PLA Spring Motor Demonstrator #3DThursday

Thingiverse user gzumwalt shared an awesome education project that we think you should check out.

A spring motor demonstrator printed entirely in PLA, spring and all.

An interesting study for beginning mechanical engineering students of rotational torque versus rotational velocity, as well as spring forces using various infill settings, spring height and spring thickness when 3D printing a spring in PLA.

Video is here.

Use safety glasses when operating the PLA Spring Motor Demonstrator. While I’ve operated the mechanism well over a hundred times without a failure, I always recommend erring on the side of caution as the spring could snap and send pieces flying where they shouldn’t be flying, and that’s never a good thing.

Designed using Sketchup 8, and printed in PLA on a Makerbot Replicator 2 using Makerware 2.3.3.42.


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