I will preface this by saying I have been painting with acrylics almost as long as I have been painting figures (mid 80s). Anyway I am working on a piece for a competition in 2 weeks and one bit needed a second coat. I had wait over night to get to it (distractions), this morning I started to paint the second coat and the whole thing sluffed off. I have never had this happen. I mostly use Reaper, but need Vallejo for certain things What did I do wrong?


Edit: the piece is resin.

what are you using to thin the paint. Did you prime the figure before the first coat?

Bob

Water and yes. Again I have been an acrylics painter since the 80s

Perhaps some kind of cross contamination? Could you have had some thinners on your brush?

Roger.

Maybe I had just switched to different brush.

That is very strange indeed.
I'm just going to throw a bunch of ideas up here in case some might stick.

• As others have pointed out. Were there any kind of solvent (i.e. thinner, brush soap residue, alcohol) present on your brush?
• How much flow-aid did you used in the paint? both the coat being applied and the one that pealed off? Excessive flow-aid use reduces durability of paint.
• How extensive did you thin the coat that came off? (This is unlikely the cause, but worth a thought)
• Did you use any other additives in the previous coat of paint, e.g. hair-spray weathering techniques etc
• Was there any varnish/sealer applied below the coat that pealed off. When varnishes are applied prior to the underlying paint being fully cured, the moisture is trapped and can cause paint to peal.
• How hard was your brush. Hard synthetic brushes can sometime scrub off thin coats of paint.

Those are all I could think of right now. Hope the above ideas are of some use to you.

Thanks. No flow aid used here, other than water (tap). No hairspray/sealer/varnish here either. I will try a different brush as one of the two I used might have had some sort of solvent/chemical on it or the second one could have scrubbed it off. It I will also try another coat of primer.