I am currently producing a plug to produce a fairly large multipiece mould for a model boat hull.The plug is an existing ABS plastic vac formed hull that has had alterations/additions in wood and bumper filler.The hull has been strengthened inside to increase rigidity to the necessary level.My principle question is,can I safely use the pattern coat system over the top of this to get the desired finish?
I know I am safe with wood and the polyester based filler,but is the pattern coat system safe to use on Rigid ABS plastic?I do intend on using no finer than 120 grit prior to application in order to get a decent key.