Dear All, I am trying to build a 1 mm thick bended tube that also shifts shapes (from square to circle to oval). I have built 2 skeletons, one is larger by 1mm in perimeters, used lofting with curviloft on each. than closed the 2 separate shapes, put the smaller into the middle of the larger, re-grouped it and extracted the smaller. the result looks like a tube, and it is solid, but when it is sliced up, there are a lot of errors. ![pipe.PNG](/uploads/imported_attachments/llyW_pipe.PNG)
the problem comes from when i use curviloft, the shape it suggests are twisted, and when i un-twist them, i cannot make it completely same for both the larger and the smaller shapes. hence when they are merged, there will be holes inside. please see the picks.
![curviloft shape.PNG](/uploads/imported_attachments/fUjs_curviloftshape.PNG)
would anyone be able to help how to make such a 1 mm thick tube?
thanks in advance
Gabor
loft h_front_jó.skp