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bcboy 02-10-2011 11:30 PM

removing old box
 
1 Attachment(s)
I'm trying to figure out how to remove an old (1940s) box while minimizing damage to the (lath and plaster) wall. The box is attached to the wall firmly, but there aren't any screws inside the box, except for the tips of two screws pointed INTO the box. I'd like to know exactly how the box is attached so as to get a better idea of how to remove it.

jlmran 02-10-2011 11:36 PM

Looks like the plaster has a grip on it. If it were mine I wouldn't worry so much about minimizing damage. Are you replacing or removing the box? If removing you'll still have a patch.

bcboy 02-11-2011 01:46 AM

I'd like to take the box out just to get a feel for how hard it would be to fish new wire through the wall (to replace knob and tube). The box must have some kind of flaps or ears on it. It's definitely not being held just by the plaster.

nathan_h 02-11-2011 02:09 AM

Duplicate

nathan_h 02-11-2011 02:10 AM

Duplicate

nathan_h 02-11-2011 02:11 AM

Yep you'll need to remove more plaster and probably lath.

bcboy 02-11-2011 02:18 AM

I wonder if the screws coming in from each side are actually for adjusting flaps, and the flaps are attached to braces which are attached to the studs.

Jim Port 02-11-2011 06:58 AM

You would typically be dealing with a box that looks similar to this. http://www.hubbellcatalog.com/raco/i...Boxes/0574.jpg The screw tip you see holds a bracket on. It does not hold the box in the wall. You will need to slide a hacksaw blade next to the stud and cut the nails.

thadsaab 02-11-2011 11:55 AM

Quote:

Originally Posted by Jim Port (Post 588809)
You will need to slide a hacksaw blade next to the stud and cut the nails.

I've had great success with the hacksaw blade method in my late 60's home. I had one box it didn't work on. An electrician friend tore it to pieces with the linesman's pliers. It didn't take much longer than cutting it out by hand.

RST 02-11-2011 12:16 PM

I had a box in my house that looked like your box from the outside but was mounted like this: http://www.garvinindustries.com/Elec...uts/54181-TBAR That was a pain to get out.

Others were nailed to the stud side, while some were nailed to the front of the stud like this:
http://www.garvinindustries.com/Elec...ackets/52151-B

I've had good success with a reciprocating saw held near but not on the wall. But still might be too much vibration for plaster and lathe (I have plaster over drywall).

Also see this thread: http://www.diychatroom.com/f18/runni...r-lathe-59376/

RST

bcboy 03-01-2011 02:33 AM

3 Attachment(s)
I finally got the box out. It turned out to have two ears, which were not visible at first because they were covered with lath. I removed the lath with a chisel. The box was held by one screw on each side.

Saturday Cowboy 03-02-2011 02:10 AM

they cheated when they installed that box:no: it would not be allowed today

RTypeEman 03-02-2011 05:00 AM

every box in my house was installed the same way, except vertically instead of sideways

Speedy Petey 03-02-2011 06:15 AM

That is how pretty much every box like that, of that era, is installed.
Many had metal rails that the box ears were slid into, and the rails nailed to the studs on each side.

Quote:

Originally Posted by Saturday Cowboy (Post 600873)
they cheated when they installed that box:no: it would not be allowed today

Why?

jlmran 03-02-2011 06:22 AM

Quote:

Originally Posted by Saturday Cowboy
they cheated when they installed that box:no: it would not be allowed today

Explain?


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