Parametric fresnel lens (Failed)

thingiverse

I'm still uploading even though it's a total failure for now. To make modeling and printing easier without support, I used a special case for the lens when R2 is infinite. For reference: http://www.livephysics.com/tools/optics-tools/focal-length-thin-lens/ Since no proper conditions were implemented, the model fails when tuning parameters outside a certain range. Adjusting fold numbers will require re-tracing the outline and redoing the revolve action. If you have suggestions or tutorials on how to create parametric non-repetitive features correctly, please leave comments. I appreciate your help in advance. I'm also planning to create a SCAD/JSCAD version that can solve this issue and verify the correctness of parameter settings. Lastly, FDM printing with 100% infill clear PLA is completely unusable (air gets in), but if you've tried SLA technology or other methods like milling or lathing clear plastic, please let me know.