Offset Fillet

bart_harris

I have asked a similar question before and was told this feature is not available, but I'll ask anyway.

I have two parts: a lid and a base. I have filleted one edge by 10mm, top and bottom. What I would like to do is fillet the parts as one, with a 12.5mm radius that is off-centre on each part but looks like a semicircle when the are together. I have drawn a sketch to illustrate this.

https://cad.onshape.com/documents/e7fe3acecd91431ca74926e0/w/ce4cce5084114fabb00188a6/e/95adfd7e180549e2aa7c780a

Thank you.

lougallo

I would do this with a sketch fillet cutting from across the front.  If the cut is not straight, you can sweep cut.  The other option which @emmett_weeks added was to use a single fillet and then split the part into two parts.

lougallo

I would do this with a sketch fillet cutting from across the front.  If the cut is not straight, you can sweep cut.  The other option which @emmett_weeks added was to use a single fillet and then split the part into two parts.

andrew_troup

When I try to load the link in the OP, I get

"Failed to load document for workspace. Resource does not exist, or you do not have permission to access it."

bart_harris

Sorry. Try again now if you like.

andrew_troup

What Lou is suggesting is that you start your Part Studio with a sketch, similar to the one you have finished up by producing. A simple sketch with three horizontal lines and one arc (opposite which will be one vertical line) will produce the result you want.

You don't need to trim the arcs to the horizontal line which is between the other two, but each arc should be constrained "tangent" to one of these two lines.

Now simply pick (first) the top region to extrude, and then the bottom one, specifying "New" for the second body so it becomes a separate part.