Plastic cleaner I'm in the same boat Tegan, I've expieremented with several solvents. In the past I've used alchol then scuff the plastic with 80 grit then another wipe down with alchol. Then I would do a Light layer of weldwood contact cement, let it dry then apply a normal coat and proceed as normal. I will likely switch to lacquer. Fred, I like your method of an underliner.