I started to prepare my old model to 3d printing with solving the problem of it's stability. The model must carry a lamp holder, a bulb, a wire and be stable
I bend a back of the model so it's okay now and no matter if it is a hollow or solid model.
The model has a cutout in it's hands for a typical plastic e14 lamp holder (diameter 2,6 cm) which (I bet) can be found everywhere. It has no wire holders so I used a hot melt glue gun to fix wires.
After 3d printing I grinded it with a sandpaper (because of a bad printer) and covered it by clearcole spray for plastic, acrylic spray paint and spray varnish. After it I stucked the model and a lamp holder with a superglue. That's all!