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How does sweep determine the normal?
sasha_sklar061
Member Posts: 10 ✭
I know, yet another post about normal behavior and sweep, I apologize in advance…
I've read through some documentation and the other threads on the topic and installed the "sweep normal" FS (which doesn't work for my use case because I'm using a composite curve) and I'm still stuck. My issue is I have one attempt where I'm getting the desired behavior and another where I'm not and I don't understand why.
My design is a custom sci-fi case that has some intricate surface cutouts that span several faces. Each face has a path made of sketch lines that ends on a point coincident with the edge of the face, and the line continues on the sketch on the adjacent face coincident with the same point. After sweeping I remove thicken the surface. The final details will be fairly complex involving several non-overlapping lines so being able to create a composite curve that references the sketches will allow me to make adjustments without re-creating the curve from scratch. The image is of the working example:
Here's the link to my document, the feature studios are titled "works" and "doesn't work":
https://cad.onshape.com/documents/bc913821407afdcba005ca7e/w/66d7741a97f2f9541a931bcd/e/6d3c32465b8b8c87c29bbbcd?renderMode=0&uiState=67d704165d573340ff2c67f5
Thanks!
Comments
@sasha_sklar061 : did you end up solving this yourself? when i opened the document, the feature in the 'doesn't work' tab seems perfectly fine.
else, perhaps can you highlight how it's not up to your expectations?
Hi Jelte, yes between posting this and when it was approved I solved this use-case.. I blame myself for not spending enough time isolating the issue before coming to the forums for help
I still don't feel like I have a good understanding of the detailed behavior of sweep and composite curves. It's clear that points bring with themselves a "context" when they're grouped into a curve that includes information about the face they're on. When I have two points that are coincident but not co-planar, like the ones at the edge of those two faces, how is it successfully creating the surface? Should the surfaces extruded from those segments at the edge be colliding/overlapping where they meet?
Sometimes I wonder if onshape, and CAD in general, is the right tool for the prop and decor objects that I make but because they incorporate electronics and other non-printed components I find the precision of CAD hard to give up.