A few Things To Watch out for: And a few fixes.

[Powder Instructor]

1. Orange Peel: Orange peel is a textured finish that looks like the surface of an orange. This can happen if the powder is applied too thickly or if the oven temperature is too low. To fix orange peel, sand the surface with fine-grit sandpaper and recoat the surface.
2. Cracking: Cracking happens when the coating dries too quickly, or if the metal is not clean before coating. To avoid cracking, make sure the metal is clean before coating and adjust the oven temperature so that the coating dries at the proper rate.
3. Fisheyes: Fisheyes are small craters or bumps on the surface of the coating. They are usually caused by contamination on the surface of the metal or powder. To avoid fisheyes, clean the metal thoroughly before coating and make sure the powder is free of any contaminants.
4. Over curing: Over curing happens when the temperature or duration of the curing process is too high. This can cause the coating to become brittle and crack. To avoid over curing, follow the manufacturer's instructions for curing time and temperature.
5. Under curing: Under curing happens when the temperature or duration of the curing process is too low. This can cause the coating to be weak and easily damaged. To avoid undercuring, make sure the oven is calibrated to the correct temperature and follow the manufacturer's instructions for curing time.
6. Discoloration: Discoloration happens when the temperature or duration of the curing process is not consistent. This can cause the coating to discolor or become blotchy. To avoid discoloration, make sure the oven is calibrated to the correct temperature and follow the manufacturer's instructions for curing time.
7. Adhesion problems: Adhesion problems happen when the powder coating does not adhere to the surface of the metal. This can be caused by poor surface preparation, contamination on the metal, or improper curing. To avoid adhesion problems, clean the metal thoroughly before coating, ensure that the powder is free of any contaminants, and follow the manufacturer's instructions for curing time.
8. Overspray: Overspray happens when the powder coating is sprayed too thickly or unevenly. This can cause rough spots or bumps on the surface of the coating. To avoid overspray, make sure the powder is applied evenly and use the correct spraying technique.

In general, the key to avoiding powder coating issues is to follow the manufacturer's instructions carefully, pay attention to surface preparation and cleanliness, and use the correct curing time and temperature. If problems do occur, they can often be fixed by sanding the surface and recoating or adjusting the oven temperature and curing time.