Customize-able Nautilus Shell

thingiverse

This is a remix of Robert Marchese's design: https://www.thingiverse.com/thing:3370200 The new features that can be customized are as follows: v1.1 - 2019-06-15 (included Robert Marchese's suggestions, thanks): - fixed argument warnings with rotate() - added descriptions to parameters shown in the Customizer GUI - added parameter to pull shell in Z axis - added parameter to control angle used to add rings to shell - added parameters to orient shell in XYZ axis v1.0 - 2019-06-10: - shape of rings used to create shell can be cylinder (original design shape), multiple sided polygon, or sphere. - number of rings used to create shell (greater than 40 rings turns more than 360 degrees). - rings can be scaled in X axis to create elliptical shape, this scaling is specified for the first ring (smallest) and the last ring (largest). The scaling for rings between first and last ring is a linear calculation. - number of sides for polygon shaped rings - polygon rings can be rotated/spun relative to previous ring and amount of relative spin is specified as an angular degree of movement. The "sphere" ring shape is a work in progress. Shells created using this ring shape are probably not printable. When "Polygon" ring shapes are selected the customizer is slow to generate preview image. Limit number of rings as you change other parameters, make selection of number of rings last parameter changed. I run OpenSCAD on my computer (2GHz i7 CPU with 12 GB of memory) with this model. A shell using "polygon" ring shape with 60 rings takes ~12 sec to generate preview image and ~4 min to render to save as STL file.