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Cold weather stud finder
(thelemmy.club)
Share your self-made stuff and half-baked projects here.
Also check out !diy@beehaw.org
There is also a related XMPP chat.
Pro tip, works in hot weather too.
also a 10 dollar studbuddy will be your best friend any time you need to find a stud
Old lath and plaster for me, so they don't work that well.
A string of small magnets generally works pretty well. They stick to the nail/screw heads fixing the lath to the studs, and then you can draw a line.