Why doesn't polycrilic work over acrylic paint?
I was painting an Arkansas Razorback stool for my nephew's son who was turning four. I meticulously painted a Razorback and the wording to go along. I then looked online to make sure of my choice for a sealer. First, I tried Minwax water based oil polycrylic. Immediately, the red paint ran into the white, ending up with a pink and white Razorback. NOT GOOD! I had to carefully sand off the poly and repaint all of the red and white. Hours of work! Then, I bought Minwax water based polycrylic. $9.00 The red immediately started to run, again. Finally, I tried Valspar gloss spray finish. Success! My question is, why didn't either of the Minwax products work? Is it only red acrylic paint that is adversely affected? Has anyone had similar problems or, hopefully, better results? Help! I usually like Minwax products.