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Circular rib
steve_petrokubi
Member Posts: 2 ✭
in General
Imagine a plastic lid to a jar. Instead of threads, I would like a circular "rib" around the inside perimeter of the lid so it "snaps" on the jar.
I offset a circle from the inside cylinder of the lid and tried to use that as a rib with "extend to part", but OnShape wouldnt have it. Then I divided the circle into three 45 degree arcs. I could use one of the arcs to create a rib, but the other 2 arcs extruded in the same direction as the first arc, which isnt what I wanted either.
Am I asking too much of the rib tool? I suppose I could create 2 more sketches for each of the remaining two 45 degree arcs, but is there an easier way to get a fully circular "rib" around the inside of a cylinder?
I offset a circle from the inside cylinder of the lid and tried to use that as a rib with "extend to part", but OnShape wouldnt have it. Then I divided the circle into three 45 degree arcs. I could use one of the arcs to create a rib, but the other 2 arcs extruded in the same direction as the first arc, which isnt what I wanted either.
Am I asking too much of the rib tool? I suppose I could create 2 more sketches for each of the remaining two 45 degree arcs, but is there an easier way to get a fully circular "rib" around the inside of a cylinder?
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