My apologies for bringing this up again as i know it has been talked to death. I am currently using the trial of MoI and the reason i want to buy the software, silly as it sounds is because i want to design something like the da vinchi air-screw. its a conical Helix, and i'm have no joy designing one and ive spent my whole night combing this forum and nothing has helped. Please a kind a appeal to the highly respected creator of MoI and all others too, to assist with a simple Helix tutorial that is as fool-proof and simple as extruding a shape. Please assist. How do i go about making something like this




Of course, its the sloping and vortex geometry i am trying to learn and that has brought me here. Some please kindly assist. Thanks.