I am restoring an old Chevelle and attempting to powder coat the small parts for a nice smooth finish.
My parts are coming out with a sandy gritty finish and I don’t know what is causing it.
I am blasting the parts with aluminum oxide in my blast cabinet.
Then I wash them down with wax and grease remover.
When dry, I powder coat them and bake them.
I thought it may be my cheapo power gun so I just got the Dual Voltage powder gun and fresh powder since mine was 4 years old.
My oven is a small unit made for powder coating. I have tried baking at 350 degrees to 410 degrees, checking part temps with an infared thermometer, but the results are the same with the fresh powder, gritty.