Either of these will help you find a stud so you can use a screw into the stud for hanging heavy things in plaster.
How to hang heavy things in plaster walls.
For lighter items simply screwing into the plaster with a 1 1 4 drywall screw is usually enough to get the job done.
Simply hanging something heavy on a plaster wall can result in damage to the wall and the object if you don t tap into the supporting structure behind the plaster.
Though there are several methods of locating studs or supports behind the wall the most reliable is using a magnetic stud finder.
Plaster is more easily damaged than drywall so it s recommended to tap into the supporting studs where possible.
Therefore it s the strongest part of the wall and the ideal place to hang pictures from.
I ve also heard great things about studpop2 since the magnet pops out when you get to a stud.
How to hang heavy objects on plaster.
For the next option you can use an anchor and screw designed for plaster.
Make sure you leave half an inch out of the wall so you have space to hang your artwork.
Generally speaking it s best to hang heavy pictures on a wall stud.
As mentioned earlier the wall stud is where the wooden lath attaches to the wooden frame behind the plaster.
Anchors for plaster walls.
Hanging things on plaster walls is easy if you have a drill and screws.
How to hang heavy things on plaster walls using a wall stud.