Trouble Extruding Angled Face

eric_schimelpfenig

Hi all! I'm a bit new to OnShape, but not new to CAD. I'm a bit hung up on a particular part of a model.

First, here's the mode: https://cad.onshape.com/documents/43d856d66fd0c29bbe2b8830/w/160a670308b9ec270c462e4a/e/73bb0f71302ddfee1b1bd58f

The area I'm hung up on is this:



I created this notch in the side of a panel and I drafted it. Then, I did a sketch on the vertical surface so I could divide it up. What I'm trying to do is extrude (and subtract) the area you see there. Whenever I do this I get "Boolean resulted in no geometry change..."

Anyone know what's going on here? Is this a bit of a bug or do I now know what I'm doing?

owen_sparks

Hi.

I might be missing the point here but it looks like you have the "add" option selected in the Boolean rather than the "remove".  Add is extruding material into a place where it already exists hence the warning that the feature results in no change to the existing geometry.

Owen S.

eric_schimelpfenig

Ahh, I must have left that set for the screenshot, when I hit "remove" I get the same error. 

I've even tried making a new body, and then doing a subtract and I still get the same error. I'm thinking it's got to do with the point it makes and that it shares the same edge as the rest of the body?

konstantin_shiriazdanov

this operation creates a solid body of zero thickness which is not allowed and can't be made in the real life, you need somehow change the geometry around to avoid this

owen_sparks

Yup, what he says ^^

O.S.

eric_schimelpfenig

I guess that makes sense. I ended up doing this: