Just finished spraying my first coat of General Finishes 450 exterior sealer out of my new Earlex sprayer. How long can I leave the left over product in the gun/pot
I have left thinned latex in mine like 30 mins to an hour. Wipe the excess of the tip or it will dry and be stubborn to get off. I've also slipped a quart zip lock bag over the pot then put the whole pot in a 1 or 2 gallon zip lock and left in fridge overnight. I cleaned the gun itself. Next morning, I left pot in the zip locks and set out to warm up while I ate breakfast. Then, used the mixer thing and started spraying. Probably not recommended but it worked OK for me that time.
I was watching an Apollo HVLP demonstration at a woodworking show. The guy said he wouldn't clean the gun until just before leaving after the weekend show was over. He was using oil based varnish, some kind of polyurethane formula. I don't recommend that, but it can stay in there for a while. If I have a big project I'm recoating a few times, I'll leave it sit for as long as a day. I suspect longer than that might be OK, but I've not got the man parts to try it.
You're definitely ok leaving it in there between coats on the same day. You just have to use your fingernail to clear the dried bit that will be at the nozzle before you spray again. I would not leave it overnight.
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