Spirograph Knot

Spirograph drawings stretched into third dimension.
note - to make a 2D spirograph (or other curve), set the vz (z scaling) to zero

This is a Customizer of Kit Wallace's Knots:

https://www.thingiverse.com/thing:2257185
http://kitwallace.co.uk/3d/knot.xq

with the formulas changed to formulas from:
"Customizable curve generator"
by kakaroto
https://www.thingiverse.com/thing:50249

to use, start with Sides low and Steps high, this will show a rough
knot quickly. Play with the param