Hello,
I am interested in finding out what the limits of humidity should be when spraying lacquer on my turnings. I use an HVLP sprayer and spray outdoors in a 2 sided enclosed canopy but use a spray can for bowl repairs. I have been spraying for several years without any problems. That said, here is a problem I came up with yesterday. I was in the process of making some very minor repairs to some bowls that had been damaged by people handling them during an open studios tour. It had rained the day before and early the morning of my problem. I sanded the damaged area of a bowl then proceeded to spray it using a spray can of lacquer. As it started to dry I could see a haze building up, needless to say I now had to repair the repair. I will now have to remove the haze by sanding then re-spray the bowl, whenever it is safe to do so. I have used this process to make minor repairs many times before without problems, however; never directly or shortly after rainfall (rain started early here in my area). I am sure it is a humidity problem but I am not sure of the solution/prevention for the remainder of the winter season. My question; at what humidity levels is it safe to spray to avoid this problem of hazing? Today, the humidity level is at 50% inside my shop (garage).
Any help you can give me will be greatly appreciated. Thank you in advance.....Ralph