twistet

[stefan.klingenberger]

hello,

i extrude a circle along curve (the curve is closed). unfortunately  is the start/ end of the extruded object twistet.

how can i rotate or untwistet it, so i looks like closed.
or is it possible to close the extruded object?

thanks for 

[mspeer]

Hi!

Too much information missing, please upload a scene-file.

[t_chanma]

I'd recommend extruding along an open curve, with the start object at one end of the curve (also make sure the Taper and Twist settings are both 0).  This will produce a much more predictable result.  Once it's extruded, you can delete the faces on each end and then weld the start and end vertices together.

[stefan.klingenberger]

hey,
thanks for your tipps and sorry that i answer so late. i did a lot of test but found no solution. 
i modelled a Möbius Strip with a cube, selected one of the outline Edge (no matter which outline) of the cube and extrude a triangle.
the Problem is the Twist deformer.
after 360° deforming, there is Always a gap.
but you´re Right, it´s possible to weld it but it Looks a Little bit unclean

[t_chanma]

Hmm, given the selection colors is it right to assume there's two objects in there?

I was able to achieve this using a Twist deformer + a Bend deformer on top of that.  As long as the twist is a multiple of 180, the edges will line up.  If they're not a multiple of 180, then mathematically they shouldn't line up.

[stefan.klingenberger]

you are right again. it will perfect work but I used the edges of the white cube because i will animate the möbius strip (rotate the main cube and the extruded objects will follow)

the white one is the (möbius) cube. I create a triangle curve object, selected an edge of the möbius cube and extruded it (the green one). i tried to post the scene but it dosen´t work. maybe it´s not zipped?

[t_chanma]

Ah I understand now.  Instead of an extruded triangle, I'd suggest you use a cylinder primitive reduced to 3 sides.  The reason you're having a problem is that the extruded geometry gets a little mangled going through a deformer (especially because it has no caps).  Even on a twist alone, you probably noticed the tips of the extruded geometry tilt rather than stay straight.

I've attached your same scene file with the fix included.

[stefan.klingenberger]

hey Matt,

you did it!!!!
perfect, this is exactly what i want. thank you very much.

but last question...how did you deform the new triangle mesh on the curve of the big cube???

[t_chanma]

I just selected them both when creating each deformer.  That way they're both affected.