My objective is to hang a ceiling fan. I'm in a house built in the 1930s. I have an old pancake box that looks like it's 3.25 inches in diameter instead of 4. I decided that, although it's old, it's connected directly to some wood member and won't budge. So I'd prefer to just use it for the fan.
Unfortunately, one of the screw holes for a fixture is missing. So then I thought I should replace it after all since I can't mount a ceiling fan bracket with only 1 screw that's off center.
A couple issues I'm running into:
- It's some kind of plaster ceiling and sort of cemented in. I'll have to chip away at it to get this one out and fit in a newer 4" box. I don't really know how to handle plaster properly / don't have tools beyond a drywall saw.
- It looks like it's nailed in as well? I've seen other posts saying this could be rivets onto something. Maybe? But I was able to loosen one of them a hammer. Then the hammer started chipping.
Is there something I can do to salvage this pancake box and somehow fasten a fan to it even though it only has one (bent) mounting hole? Maybe fasten to it some other way? Directly into the wood?
Or if I need to replace it, is there any way to do that from below? I have access to the attic, but it's in a spot that is tough to get to and covered in cellulose insulation.
Red - Nails
Blue - Wood screw holes (screw removed as I attempted to get the box out)
Edit(1): Wanted to go through the pancake box as Jim suggested, but the holes wouldn't line up with the fan bracket.
Not proud of this, but I got a 4in cross bar kit at Home Depot that's rated to hold a light fixture of up to 35 pounds. It connects to the crow foot via an 1/8in nipple. Mounted the fan bracket to that + one screw directly to the box (shown in green below). Officially not to code, but my fan is 18 pounds. Hoping that the crows foot / cross bar and nails / screw direct to the box will hold that 18 pounds plus additional weight while the fan is in motion.