Unfortunately, after reading Craftmaster Paint's description, I doubt you will ever have much success cutting and polishing this paint.
Enamels harden via molecular binding of the paint molecules. This is different to cellulose lacquer, which dry solely by solvent evaporation.
However, the process of enamel hardening is extremely slow and can take weeks, months, or even years. The surface layer may harden in a day or two, but underneath it will still be soft. Craftmaster's site tells you this when they say:
"The other type of polishing is that commonly associated with automotive refinishing, involving the application of cutting compounds followed by mechanical polishing with mops. We do not generally recommend this for our paintwork and offer no advice on the process. If it must be attempted, then you have to wait for 6-8 weeks after the last coat of paint has been applied. Be aware though you may not be able to improve the shine or depth of the finish and whilst imperfections may be removed, this may be at the cost of some of the shine."
The only ways to make enamel harden quickly and thoroughly is to either provide energy for the hardening process via heat (i.e. a baking oven) or to add a chemical catalyst to speed the hardening reaction. If you don't have a baking heat source or chemical additives, this stuff will not harden for a long, long time.
You can't cut and polish this stuff, not because it is too hard, but quite the opposite - it's too soft. It hasn't dried underneath the surface. Once you pierce the outer shell of hardened paint you just expose the not-yet-cured lower layers.
If your goal is a mirror-like finish, you'll either have to apply this product perfectly, or use something else. I feel you will be in for a bad surprise trying to perfect it after application with polish and compound. Craftmaster is already telling you this themselves.
Dave
Edited by bluedragon, 05 December 2020 - 10:53 AM.
