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Spinner Knob for Rotary Encoder

by MiseryBot, published

Spinner Knob for Rotary Encoder by MiseryBot Feb 11, 2012
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Summary

Operation Video here:
http://www.youtube.com/watch?v=zdTjQ6AbVxQ

One layer of printing (high-res, macro) here:
http://www.youtube.com/watch?v=P98S2NxbNbM

3d printed spinner knob for rotary encoder jog/shuttle control

Made on MakerBot CupCake #1024 (MiseryBot)

Use with Digi-Key 987-1195-ND:
http://search.digikey.com/scripts/DkSearch/dksus.dll?keywords=987-1195-ND
( TT Electronics/BI EN12-HS22AF20 )

Instructions

The STL is high-resolution / huge.

You may want or need to re-save the STL in OpenScad at a more-coarse resolution.

Just change the "$fs=0.25;" line to a larger (more coarse) number and then re "F6" and re-save STL.

I had heard of dipping parts in acetone to smooth them. I gave that a shot. Pretty amazing, pic attached.

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Beware of the acetone. Some seeped in and the knob melted a bit from the inside. I think it needs a tighter fill and less time in the acetone. I'll try some other recipes.

Thanks for the pic with dip, though. Inspiring. You could try baking out the acetone after the dip: It's very volatile...

First time I see a printed object smoothed with acetone and I'm pretty amazed.

Beautiful quality ! :)

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