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2

As Joe points out, if this wall is original, then it's not drywall, but plaster. You can't easily detect studs behind plaster walls with a stud detector. You likely have to use test holes. One option is to drill a largish hole in the center(ish) of where you will mount the TV. Then use a coat hanger to fish it into the hole to see if you can locate the studs ...


2

An over-100-year-old apartment building is likely plaster-over-lath. In that case, you should be able to drill through the plaster and into the lath to sink wood screws. If this is so, you'll see what looks like sawdust on the tip of the drill when you pull it out. I'd probably use a bunch more than just the 4 recommended, but it'll hold a TV under 50 lbs....


2

As Dan G pointed out, being off-ctr by 0.64 cm on each stud really doesn't matter. Personally :-) , if I had to deal w/ a similar situation but a worse mismatch, e.g. 14-inch vs 17-inch spacing, I'd do one of 2 things. 1) bolt short lengths of 2x4 vertically to the existing studs, then hang the bracket on these add-ons. 2) (more work and less stable) get ...


4

Last time I encountered that, I put two 2x4's across the stud span, chamfered the edges too a 45 angle and painted it to match the wall. Mounted the bracket onto that, if it's a rental or you just don't want to wreck the walls, put a thin piece of cardboard between the 2x4 and wall before you mount it to make sure it doesn't pull up any paint when you remove ...


0

I'd agree with User217623 on drilling the Ski-Rack to hit the studs with Lag screws. However, the 2x4 idea is fine, I'd go with Tee-Nuts on the backside of the 2x4's for the Ski-Rack mounting, so you can use large bolts. Use thick or double washers on everything, except the Tee-Nuts of course. Even Douglas Fir 2x4's are quite soft & will loosen over ...


2

Assuming not much is as stake, the idea is reasonable if the rack will still 'work' when it is 1.5" from the wall. I suggest screws or lags of whatever type you have on hand, long enough to drive 1.5" into the stud, placed 3/4" from the top of the 2x4 cleat, one per stud, assuming you can tighten the screws enough to fasten the cleat tightly to the wall. ...



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