I have a question for you about allowable oven temperature variation. Our ovens were recently calibrated and were 1 degree off from our control unit reading to what was measured inside. Due to our ISO regulations I may possibly need to shut them down until it is exact. I know temperature variations are needed to keep minimal but this sounds ridiculous.

Do you have any articles that talk about the pros or cons of powder coating with zinc primer vs galvanizing and then powder coating over top? Thanks for sharing your wealth of knowledge :)

I am new to powder coating, but the plant where I work has been doing it for a few years. The guys do a good job on single color and are starting to experiment with multi colors. Is multicolor powder coating possible? If so, do you have any information that would help us?

I have some brake calipers that I powder coated and I would like to add lettering then then add a clear powder coat and put in the oven and bake it. I would like to know of any material (vinyl, decal or anything) that can withstand 200 ⁰C to be powder coated over.

This is a very interesting problem and one that allows me to dust off my chemistry wizard’s hat to help you understand and solve this caper.

We notice that the cured powder does not stick readily to edges that have been cut by a laser. What are the causes of this and what can be done to overcome the adhesion issues?

We powder coat steel tubing for broom handles and paint about 1,000,000 tubes per month. We have been experiencing some contamination between color changes. We think this might have to do with our gun hoses. How often should we be replacing the hoses that go from the pump to the gun?