Spiral moving fish

by JustinSDK, published

Spiral moving fish by JustinSDK Sep 10, 2016


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When I published Moving fish, someone said: "Could you coil up the fish to allow more segments?"

Coiling up the fish needs Archimedean spiral as a base. The original code of Moving fish is quick and dirty so I have to refactor it. The joint between segments also needs some modification. This is a good request. I learned much from it.

You may use the model with 3 segments to test your printer. If it's printed successfully, a fish with more segments is basically not a problem.

A fish with 3 segments

The number 99 reaches the limit of my 3D printer.

A fish with 99 segments.

And, what's the limit of your printer? :)

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Cute design. I'll post a make in a moment. One thing I did note is that if you increase n_multi_3_segments high enough, the pieces near the head will end up being printed "inside" some of the tail pieces. A little more mathematics required I think to get it perfect, but even so, it's already brilliant. Thanks for the model !

Thanks for pointing out the problem. It's fixed now.

This is very cool. Would it be possible to get a few more segments printed if the tail was in the middle? Since the tail is thinner you might be able to start closer to the center and tighten the radius (non Archimedes ).

I think it's possible. Using Archimedean spiral is just a (relatively) simple way for me. Maybe I could figure out a new design while finding a new spiral someday.