Moldable, sandable substance to connect several pieces of plastic?
I am attempting to connect several pieces of plastic and want to do it nice and smooth, so that when finished it looks like it is suppose to be like that. To that I end I would need to be able to mold, have it air dry, then be able to sand it smooth and paint it. I was thinking of using air dry modeling clay but I do not know how well that would integrate with plastic as well as being able to sand it. Any ideas?