I’m trying to model the top cone of a self tapping screw, as pictured below; with it’s threads consuming around 2/3rds of it. The thread pitch is 1.75 mm.
I successfully followed this video (link), that demonstrated on how to create a conical helix.
I would like to obtain the height difference, between the green circles in the image below.
I was able to use multiple guide lines and the protractor tool, but adjusting the height of the helix with the scale tool, would require me re-drawing the guidelines.
I was wondering if there was a quicker way of achieving the task?
This is the .skp file: 025_conical_helix height thread pitch.skp (1.6 MB)