How to loft an X connection between 4 Struts seamless

cehteh

I am trying to Loft between 4 Profiles and can't get it work in smooth way, whatever i try breaks some constraints (see below) or creates
visible seams instead a smooth surface.

https://cad.onshape.com/documents/da3a8c590dc62827f33a5612/w/97ef208146d4363f51be660c/e/3724355a8d2aec9c863e438a

Constraints:
 - All surfaces must be normal to the sketched egg-shaped ellipses, esp on the ends and the middle (sketch 2) plane
 - The long guiding Ellipse on sketch 5 is not that important, if anyone can help w/o constraining to that
 - The ends shall connect with arcs/radius as defined on sketch 4
 - smooth and seamless
 

philip_thomas

@christian_thäter - there is a lot going on in this model.
Rough advice - put tangencies in your sketches rather than trying to force a surface to be tangent at points that aren't tangent.

NOTE - There are two solutions in this document, they are on branches B1 and B2

I am not saying they are perfect (time constraints) - they are however, good strategies and good ideas










https://cad.onshape.com/documents/8a6922a30c254ce33d29c8f2/w/76b7a957a5cc17997523ac0a/e/1a1bc806c5083b437e343a05

Good luck!

philip_thomas

@christian_thäter - there is a lot going on in this model.
Rough advice - put tangencies in your sketches rather than trying to force a surface to be tangent at points that aren't tangent.

NOTE - There are two solutions in this document, they are on branches B1 and B2

I am not saying they are perfect (time constraints) - they are however, good strategies and good ideas










https://cad.onshape.com/documents/8a6922a30c254ce33d29c8f2/w/76b7a957a5cc17997523ac0a/e/1a1bc806c5083b437e343a05

Good luck!

cehteh

Thanks, that was the hint I needed