Hey! This thing is still a Work in Progress. Files, instructions, and other stuff might change!

Spiral Cup II

by MakeALot, published

Spiral Cup II by MakeALot Mar 10, 2011

Featured Thing!


Another Spiral Cup, this one with the links going around the cup

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Very cool! thanks for posting this!


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BSD License
Spiral Cup II by MakeALot is licensed under the BSD License license.

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Generate an STL using a Mac and then print

I created a simplified version so that I could generate the STL file, it's a little too large to print, please scale by 0.75 to fit the build platform of a Makerbot.

I also moved the loop up to the mid point to reduce the overhang (that's the blue one printed)

I've tried to use parameters for everything you might want to change:

axisRotation the number of times around the top of the torus
radialRotation the number of times rotated into the hole in the torus
baseHeight height of the plinth (0 for no plinth)
numberOfSpheres number of spheres used to complete the knot
sphereQuality the larger the number, the lower the quality see $fs
majorRadius the major radius of the torus
minorRadius the minor radius of the torus
sphereSize the size of each dot in the knot
cupHeight number of links high
vStretchFor3dPrint how much to stretch it up to help with overhang
printWidthInMM the width you'd like the finished item to be in millimetres

This is based on the Parametric Knot thing I made previously, ...and the bracelet thing (notice a theme, I promise I'll stop soon :)

I had to do the knot thing before I could produce the cup I wanted, and it turned out nicely, so I published it.
Very cool! thanks for posting this!