[jleslie]

I just came across this thread, and from it I was able to figure out my own technique that I think is pretty good for the issue of rounding corners, and in this case, the entire edge.

I made up a router bit, and then used it on the shape.

I had a very square, sharp edge of a cube and I wanted to round its edges. so I made a rectangle, and a cylinder a bit bigger than the rectangle centered on the rectangular box (RB). I then from the RB object ->boolean->subtract the cylinder eaving me with 4 corner router bits. I then copied and pasted the corner I needed into a new object, and then carefully laid it over the edge I wanted to round. Then from my part I subtracted the router bit. In screenshot 04, there were some leftover surfaces for some reason, I just deleted those.

for the other edge, I rotated my router bit, and placed it over that edge. I didnt' think the curve was exactly right so I stretched and skewed the router bit shape so the curve was what I wanted. some of the vertexes of the router bit were inside the shape and using the vertex mode, grabbed those vettexes and dragged them away from the part so that when I then applied the object boolean subtract to that edge.