topic Re: Helical Lofting help in Inventor Forum

Helical Lofting help

joanzer — Sun, 12 Apr 2026 21:46:48 GMT

Hello, i am trying to make the end of this helical thread profile have a radius corner which follows the helical path. i cant quite get it working. The 3d sketches are top and bottom rails and the 2d sketches are shown aswell. Can i get some advice as to what im missing ?

Re: Helical Lofting help

kacper.suchomski — Sun, 12 Apr 2026 19:39:42 GMT

You did not attach a file.

Re: Helical Lofting help

joanzer — Sun, 12 Apr 2026 21:45:43 GMT

here it is

Re: Helical Lofting help

kacper.suchomski — Sun, 12 Apr 2026 21:46:42 GMT

What can I do with graphics?

Re: Helical Lofting help

SBix26 — Tue, 14 Apr 2026 01:01:38 GMT

I tried rounding out the end of a helical cut by using a full round fillet. I think it's easier if you wait to add the root radii of your thread until after the full round:

Sam B

Inventor Pro 2027 RTM | Windows 11 Home 25H2

Re: Helical Lofting help

rosie_lucas1 — Thu, 16 Apr 2026 20:25:49 GMT

Hi @joanzer,

I wanted to follow up to see if the help from @SBix26 was able to get things resolved for you?

If so, please consider selecting "Accept Solution." It makes it easier for others to find helpful info.

If you’re still having trouble, feel free to reply and let us know. We’re happy to assist.

All the best,

Rosie | Community Manag

Re: Helical Lofting help

SBix26 — Thu, 23 Apr 2026 00:01:27 GMT

Circling back to this topic after being away for a while, the best method is to use Solid Sweep. Instead of sweeping a 2D profile, you essentially create the 3D cutter as a separate solid body, then use the Sweep tool with Solid Sweep toggled on to drive the cutter along the path. That leaves the end as realistic as Inventor can make it.

If you're interested in the file, I created the above image in Inventor 2027, which you would need in order to open it.

Sam B

Inventor Pro 2027 RTM | Windows 11 Home 25H2