I’ve been really happy with the Mr Surfacer, particularly as a final prepaint coat. A light high grit sanding and good to go with the colour coat.
I thought I was on the final coat when this happened.
I can’t think of anything I did differently on this coat and I’m at a bit of a loss. If anyone has run into this and has a clue what’s happened, your insight would be greatly appreciated.
Thanks in advance for any help.
Cheers,
Colin
It looks like the previous coat dried but wasn’t cured before you put the current coat on. You have a “window” to add additional coats of any paint. You have to keep it “wet” (repaint within 30 minutes or less) or let it cure (repaint in 2 or 3 days). If you add a coat between these windows, the underlying coat shrinks at a different rate as it cures, causing this style of cracking.
Thank-you sir. Another detail to add to the Infinite Necronomicon of Chromomancy and Filler Putty. 
I’ll guess I’ve never worked quickly enough for problem to come up before.
Cheers,
Colin
i had this with a coat of the equivalent of Klear here in Oz. Never had a problem before, but i’d sprayed over Vallejo Acrylics. This time it was over Tamiya lacquer paints, and thanks to SSGToms i can now see why the “klear” crazed as it did.
Humidity has been awful here for a few weeks so the paint must take much longer to dry.
