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 parameters until satisfied. Then set Sides high and
Steps low. This will take a lot longer but give a much smoother result. Then
click on the "Create Thing" button.

Note - sometime you will get a knot with "breaks", particularly with epicycloid and hypocycloid. Sometimes it helps to set Open=true.

print with supports
note - if you use a small rope diameter or low perimeters,
you may have trouble separating the supports without
breaking the model