How do you draw a spiral or helix


#1

How do you draw a helix or spiral as would be used to draw the handrail on a spiral stair or threads on a screw or bolt?


#2

You can have a look at these tutorials by Dave Richards:




#3

See …
SketchUp Sage > Tips & Tricks > Modeling Methods > Helical forms - spirals, screw threads and more…

-Geo