CAUSES Too small quantity of hardener added. High air humidity, which increases drying time, also CAUSES clogging of the paper. Material is sagging.
CAUSES Too small quantity of hardener added. High air humidity, which increases drying time, also CAUSES clogging of the paper. Material is sagging.
CAUSES Incorrect puttying (presence of air or thick coats). Surface not dried through enough. Too thin primer coat.
PREVENTION With a spatula, you should press down the putty on the mixing board on the same place several times in order to force out the air. Don’t putty in high thicknesses, you should apply several thin coats. Sand the pinholes or apply putty to them. Always, isolate PE putty prior to application of a top coat.
CAUSES Sanding of putty with unsuitable (too coarse) abrasive paper. Sanding of old lacquering with unsuitable (too coarse) abrasive paper.