[widebody911]

The concrete has a couple of light cracks on the surface, but I used 1/2" rebar on 18" centers, and #6 (IIRC) wire mesh, so it's not going anywhere.

To fasten the plate, I made a 4" 'column' of 5/8-11 nuts welded together and glued them in with Hilti epoxy. The plate is big enough for the bender to stand on it's own when not in use. I welded nuts on the bottom of the top plate and the bender bolts to that. I need to (ahem) "adjust" the other two holes in the plate so I can get those bolts in. I have some allen bolts to thread in when I don't have the bender installed, and the embedded fasters are recessed so the the allen bolts will sit flush with the concrete.