What do you generally figure the recoat window on pre-cat lacquer (Sherwin Williams) is before you need to scuff sand with 400 grit sandpaper for adhesion? The weather is not allowing me to get all my coats on in one day, so I have to wait until the next day on some of it. Would I be alright waiting overnight, or perhaps longer?
From contributor C:
Go to Sherwin Williams' site and pull up tech sheet.
I suggest you try a little test. Shoot a panel and let it dry for 6 hours, put a drop of lacquer thinner on it and see if it attacks the finish. If so, the next coat of finish should likewise be able to bond since after all, it's just resin in lacquer thinner. Then wait 12 hours and do the same test and then two days and do the same test. At some point the LT shouldn't have much affect on a catalyzed product. That's when you need to sand.