by MishaT, published
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Nautilus gears based on logarithmic spirals. The gear profiles were generated using this Maple script for which full credit goes to the original author:
Rendered animation of the gears: http://www.youtube.com/watch?v=dtkEyZwuwH4
I'm not going to upload the SolidWorks file because it is frankly a mess of different experimentation, but I uploaded the DXF which should be easy enough to modify with most CAD software.
Update: No more breaking pins!
I've replaced the pins with a simple press fit design. Print two of the Connector Bar v2 or the Curved Connector Bar v2 (same idea, just curved for aesthetics) and snap them together! On a well calibrated printer they should snap together easily and hold tightly with friction.
If they aren't sticking together just add a drop of glue! Warning, these bars are one time use, they will be very hard to pull apart without breaking the pin.
I will keep the original bars on for reference.
Print two gears and two connector bars.
Place the gears onto a connector bar, make sure the gears align as in the pictures, snap in the second bar and enjoy.
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Nautilus Gears by MishaT is licensed under the Creative Commons - Attribution license.
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