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Offsetting a complex shape
alex_4
Member Posts: 3 ✭
I'm building a map with a cut out state that needs to move up/down through the map. To create enough clearance between the movable element's edges and the fixed element, I'm trying to offset the edges inward. That works on simple shapes, but when I get to more complex ones, I get a "Can only offset a single chain at once" message. This seems to have something to do with selection order - if I drag-select an entire object, this pops up right away. If I select segment by segment, it works correctly on simpler ones, but not on more complex ones. What am I doing wrong?
Sketch for reference: https://cad.onshape.com/documents/30636060fb5c8b857ad961f5/w/cddcf6b4c973a8494dd80be4/e/f4336f0ae7c0b8d777a7c864
Sketch for reference: https://cad.onshape.com/documents/30636060fb5c8b857ad961f5/w/cddcf6b4c973a8494dd80be4/e/f4336f0ae7c0b8d777a7c864
0
Best Answer
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OptionsCris_Bowers
Member Posts: 281 PRO
You can use "move face" or "thicken" on the extruded parts. I found that setting the depth to 0.05mm kept most of the geometry intact. Just do a selection window around the states, then deselect the top and bottom faces of each. You will also need to flip the direction of the offset.
7
Answers
See the Boolean: Subtract section:
https://cad.onshape.com/help/Content/booleanparts.htm