Chamfer 3 point corner

[BLD-Designs]

How do I chamfer the corner with a 3 point plane, but leave the rest of the body that the plane intersects intact?

[laughingcreek]

There are a number of ways you might do this.  Here is one-

[BLD-Designs]

Sorry

Cant really see what is being done resolution is bad and video is small

[laughingcreek]

can't help you with the resolution thing, that's a bandwidth issue on your end ( or maybe at AD's servers).  you can make the video full screen though so you can see it better.

[BLD-Designs]

I must be missing something. Still a bit protruding

[laughingcreek]

Yeah, you need to extend the sketch lines out so you catch that bit.  Your profile will look like a 3 sided triangle, not a 4 sided poly.