Can a electric heater be used in a small confined space to dry painted crafts?

Answer 1

Not a good idea. Paint vapours and fumes from painted objects can be of an explosive nature. This is well established in spray paint booths. They have to be wire to explosion proof standards. If the heater can be placed outside of the confined space and the heat drawn into the space by an exhaust fan on the other side of the room, this would be much safer way to dry paint. The exhaust fan should ducted to an outside area where the atmosphere can dispense of the paint vapours and fumes.