loft from boundary surface to sketch doesn't work

raphael_breton687

hi, i am trying to make a loft from the boundary surface to the sketch but it doesn't let me do it, if someone knows how to do it please share

raphael_breton687

here is the link to the document https://cad.onshape.com/documents/66ebe112f2eb65e17ea6b748/w/119d6af29726e460a93a5547/e/a33d6594b78cee3773da93ac

S1mon

It's really not clear from that document the exact problem that you're having or if you've already solved it. What I do notice is that Loft 1 seems like it should have been a simple extrude, either up to a surface, or split by a surface. There's a lot of complexity where you probably don't need/want it.

Looking at the end of Loft 1, it seems like it could have just been extruded:

Then, looking at the curvature analysis/combs you can see that the surfaces are getting close to being degenerate (3 or 2 sided, instead of 4 sided). This will likely lead to downstream weirdness.