Sweeped a triangle profile on helix rail give odd result as shown on bellow image.

Can anyone help me with this problem? Or maybe explain why this happened?

I also attached 3dm file for test.

Thanks

You have done a freeform twist not a flat twist, look under sweep options , there is a choice,
Tim.

Thanks for the answer Tim :)
But Flat option also give odd result as below image ???

Curious that works fine at home ?
Put the triangle perpendicular and out of a "bounding box" of the helix and make the sweep

Hi Johny - for the flat option your helix should be oriented along the world Z axis.

So if you go the the right-side view and rotate it 90 degrees, and then repeat it with the flat option it should work how you want.

- Michael

Thanks Michael, its works well on z axis :)

PS: Wish on v2, its works well on any direction ;)

added to the whish list :)

Thanks PILOU! :)

Agreed, having a dependencies on positioning kills a creative session - especially when you don't know (or forget) that a tool has a dependency for this or that...

-Will

Maybe when you choose "flat", I can default to the world z axis direction, but show a button underneath it that says "Set flat dir", and if you push it let you pick 2 points to define the direction.

- Michael

Why not automatic get helix both end points?

Hi Johny - that would be difficult because the default isn't "flat" mode, it is the freeform twist mode which does not need any direction information.

So that would feel a little odd if I forced you to pick 2 points every time you did sweep, but then did not use that information by default.

- Michael

Ah, I think you're right Michael ;)
Sorry, I forgot that 3dm file format not save start and end point of created helix information.

And I agree with a button option for select start and end point of direction if we select Flat mode.