Recessed Hangers for Poured Plaster Pieces

This is a simple method for creating a recessed mounting system for simple flat-back plaster objects.  The resultant hangers will allow the objects to hang flat against a wall.  Hanging wire is embedded in modeling clay before being pressed into wet plaster.  The clay is later removed and the result is a cavity with a recessed hanging wire to accommodate nails or other hanging assemblies.

I used this technique in my Hearthstone Plaque and Chalkboard Conversation Heart Instructables but the hanger assembly seemed really useful so I thought it deserved its own Instructable.

Step 1 You Need

Modeling Clay*
Wire for Hanging (non-rusting like copper or aluminum; sized to hold the weight of your finished product)
Plaster mold
Plaster - mixed as directed

*This MUST be traditional modeling clay or Plasticine, not Play Doh or similar play clays.  Play Doh is water-based.  It tends to absorb moisture out of the plaster and turn into a big, gooey mess that can't be pulled out of the cavity easily.

Comments

[Ranie-K]

I usually just flattened a paper-clip into an S shape and almost totally submerged it in the plaster when it's starting to solidify. When it had hardened, I hung the thing on a nail using that end of the paper-clip sticking out.

I guess I could scrape out a teaspoon of plaster (before it hardens) just under that paper-clip to make it hang totally flush.

Another trick I used with plaster is straighten out steel clothes hangers and put these in the plaster to make it tougher/stronger.

Plaster cleanup is hard. I squirted lemon juice on the linoleum floor once to try to dissolve it. I reasoned that plaster was alkali and that I needed something acidic to dissolve it. Didn't work wonders, but it wasn't less effective than soap (soap is usually alkali)

[starshipminivan]

That's a good solution. You could also push a piece of modeling clay into the back to create the hole and pull it out later. I posted this, mostly so I didn't have to describe this process and why I have a piece of clay in the backs of several Instructable projects on which my hanging system will show.

Some of my projects aren't symmetrical so this gives me lots of room for error when hanging these objects from wall hooks. I also use this when I have children paint hanging "frescos" on fresh plaster. The plaster is reverse molded to allow for a freshly poured plaster surface on which to paint. The clay-covered wire is placed in the back of the mold prior to pouring and the clay is removed when the whole project is complete. Hmm...might have to make an Instructable for that.