Hi,
I am having trouble recreating this pitch on a feed screw.
It starts with two 6mm pitch revolutions, than goes to 12mm revolutions (3 total). I can get the helix to work from 6mm to 12mm but from 12mm to 12mm always messes up the rest of it.
Below is how i am trying to set it up, not sure what I am doing wrong.
I would recommend the use of 2 separate helix features if you're looking for a sharp transition between the two pitches. The variable option will try to smoothly transition from one pitch to the next between the two steps where the pitch changes.