@scollado@mfraz74@FreeCAD I finally got a chance to mess with some techniques this morning, and Mark’s suggestion of the CurvesWB is a good one. I used a PipeShell with two circle cross-sections and one of the helical edges as the spine. Then, I did a Boolean cut in the PartWB and applied a fillet to the edges of the channel (optional).
Does this capture what you’re after? There are some considerations for non-circular cross-sections.