I can trim a surface but SW requires that your choose to delete one or the other resulting surface. Does anybody have a simple way to trim/split a surface and keep both parts?
Why not make copies of both surfaces using Offset surface with an offset distance of zero. Then take turns trimming each set of surfaces and keeping different parts each time until you have all the parts you want to keep. I uploaded an example. I hope you can see it because it's in SW2010.
All I did is a couple of surfaces that intersect each other and would produce four parts. First, I copied the surfaces with offset distance zero. Then, I trimmed one pair (mutual trim) and kept one part of each surface. Then, trimmed the copies (mutual trim again) and kept the other two parts that had been discarded in the previous trim.
Hope it helps!
Sketch a line, insert curve split line.
Yeah, that's an enhancement request. You can do it with a solid by splitting the body, but you can't do it with a surface except using Gabi's method. Copy the face/body using offset, knit or move/copy body, then trim alternating sides of each body. It's a pain, but that's the way it goes.
matt, am i missing something?
using tony's method i split surfaces all the time AND keep both surfaces.
Ok, I guess it depends on what you mean by "split". I mean "split" as in the Split feature that creates two separate bodies. Tony means "split" as in the Split Line that just creates an edge on a single body.
When SW users ask the question you asked, they usually are talking about the Trim feature, which works on surfaces like the Split feature works on solids, except Trim always throws away something.
It is a frustration with surface modeling folks that you can't split a single surface body into multiple surface bodies as easily as you can with solids.
ah, i gotcha.
Thanks Matt, I wasn't sure if that would work for him.
Thanks all. Confirmation that you cannot "trim" a surface without consuming one of the resulting surfaces.
OK this is a cheat but it works. I cut the surface into two by using a closed cutting shape rather than a curve. What I do is create a curve, then offset it (both ways) by say 0.05mm (so it is 0.1mm overall) and cut with that. also do the same with a split line and then delete the 0.1mm section. OK so the edges don't touch but for a physical split they don't touch anyway and 0.1mm is not much.
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