Hello! I’ve an acryllic painting on a piece of 1 inch standard plywood (smooth on top) that is beginning to check. The wood was sanded, then a primer was put on top, and then the acryllic paint was applied. The painting was begun in December 2018. Is there a way to prevent or stop the checking with the painting already done?
Hi
So sorry to hear of your troubles but it is not a surprise to me. I have seen this phenonemnon for decades. The use of plywood as a painting substrate has come up a few times here. The two links below cover the salient points.
https://www.artcons.udel.edu/mitra/forums/question?QID=575
https://www.artcons.udel.edu/mitra/forums/question?QID=388
Unfortunately, I do not think that there is any way to diminish the checking after the fact. The checking would likely return even if you filled and inpainted the narrow checks. Any procedure would have to be very invasive and would be unlikely to really change the surface enough to eliminate the checking.