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why is my infill paint not drying properly?
Hi
As you can see from the pic I’ve sandblasted a piece of slate and tried to infill the letters with (what I have been told is the best to use) Humbrol enamel exterior paint. The problem is it has dried and instead of going really smooth and gloss like it has wrinkled and not created the smooth finish I require and have seen on other similar slate signs
Any ideas on this? Do I need to prepare the slate with some form of undercoat? Apply the paint in thinner layers??
Cheers
Russ
PS – I should say that although it looks like its convex its actually concave.
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