More experiments

In an effort to find a more environmentally friendly clear coat, for this current job I've switched to a new low VOC, waterborne lacquer and sealer system. I used them for the first time today, to spray a pair of sample panels for the client.

This new system, despite being water based, is KCMA (Kitchen Cabinet Manufacturer's Association) approved, so it produces a hard, durable finish that resist staining and etching from common food items.

Once again, the wisdom of not committing to a full scale right away is proven. The dry times of these coatings are short, 30 minutes or less, which is necessary for my work. However, this fast dry time means bubbles in the wet finish don't always have time to burst before drying. This is definitely the case for this system when applied with HVLP.

The resulting sample panels are pock marked and totally unacceptable. According to the manufacturer there are additives that can be mixed in to prevent this. I will have to do more experimenting to work out the best solution.

On the other hand, the reduction in harmful vapors is wonderful! As is the soap and water clean up. Normally the solvent fumes are horrible, and I have to use lacquer thinner to clean up.

Assuming I can get this bubbling problem worked out, I see no reason to ever go back to the old system.