Compound paths/holes in Sketches

jour_hadique

I'm trying to figure out how to make sketches with what would, in Adobe Illustrator, would be called "compound paths", or, in layman's terms might be called "holes", but both of those terms seem to be significantly overloaded in OnShape. This is the sketch I'm working with. It looks like this:

You'll see there, three moderately concentric shapes. Let's call them "inner", "middle", and "outer". The outer shape represents the outer portion of a solid. The middle represents a 'hole' in the outer. and the inner represents an 'inverse hole' in the hole described by the middle.

How do I create those relationships in an onshape sketch? Searching for 'compound path' returns people trying to fillet over corners in multiple dimensions. Searching for 'hole' leads to the 3D hole tool and not anything related to sketches.

This is basic stuff in other vector drawing programs, so I'm reasonably sure I'm missing something obvious. :/

Thanks,

Ian

glen_dewsbury

Not too sure about the question but maybe this is what you're trying to do.

Compound path question - Copy

eric_pesty

I think you might have been looking for the sketch offset tool… but maybe a more relevant question is why you need the 3 contours in a single sketch in the first place…

Frist of all you could just have the outer contour in its own sketch, and create the internal ones in a separate sketch. You could also use just one of your two internal contours and use a "thin" feature (extrude, revolve, whatever) to remove it from your "main" shape.

I think you are trying to do too much in a single sketch. Parametric CAD is meant to use successive features to create your final shape rather than create it all at once in a single feature from a single sketch.

_anton

Depends on what you want to actually do with this. The sketch itself is flat; the curves separate it into disjoint regions. A sketch is almost always the first step to creating a 3D shape. Typically, you'd do something like extruding the whole thing, and then extrude-removing the "hole".