how to hang things on plaster walls without cracking a hundred year old wall

Learned most of this the hard way on the living room wall before I got smart about it.

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Find the lath, not just where a stud finder says a stud might be

tap the wall and listen for the duller thud, that's where the wood lath strips are behind the plaster

Put a strip of painter's tape over the exact spot before you drill

keeps the plaster from crumbling and spidering out around the hole as the bit goes in

Switch to a masonry bit, not the standard wood or drywall bit

a carbide tip pulverizes the plaster instead of grabbing and cracking it. measure twice, this is the step people skip

Drill at low speed and let the bit do the work

forcing it is what actually causes the crack, not the hole itself

For anything under about 15 lbs, aim for the lath itself and skip the anchor

it's real wood back there, holds a screw fine on its own for pictures and light shelves

For heavier things, use a proper anchor rated for plaster or masonry, not a standard drywall anchor

Back the screw in slowly and stop the second the resistance changes

that change in feel means you've hit the lath or gone through it, either way, stop pushing

If a hairline crack starts anyway, spackle it the same day

left one unpatched for a month once and it grew about two more inches before I got to it

When in doubt, use Command strips or a picture rail system instead of guessing

the living room gallery wall is 90% Command strips now for exactly this reason

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