This is sortof a sequel to my "Drill up inside wall" question from a few days back. I got the cable pulled, but it was a difficult job due to the owner-unfriendly way the attic was constructed. We had to make three 4" diameter hole-saw holes in the ceiling to fish the cables where they had to go. (We also made use of an existing hole for recessed lighting). The holes are all in closets (yay!) and the circles cut out are in decent shape (two are good, one's a little banged up). The electrician suggested bridging the hole with a stick of wood, (say 1" by 8") then slather the edges of the circle with mud and use a sheetrock screw or two to fasten the circle to the bridging piece of wood. Once the mud dries, I can sand it down or build it up as needed, spray a little more texture over the area, prime and paint, and it should be invisible ... at least that's the plan.
1) Does this generally sound like a good plan or is there a better way? I like the sound of this approach because it doesn't involve adding thickness on the front, where I'd have to feather it for a good distance to look right, and I'd have to do a lot more re-texturing.
2) What sort of wood would you use? I was thinking the lightest plywood around.
3) Is "mud" the same as wallboard joint compound? I want to be sure I'm using the right stuff.
Anything else you think I should know?