Top positive review
Works well but they aren't kidding about the 28-day cure time
Reviewed in the United States on April 11, 2016
I used this stuff to cover/protect glass paint. I painted the Mod Podge on with 3 coats, cured it for 28 days, and then put them all through the dishwasher. It did NOT come out perfect! The areas where the MP was thin turned out fine, bullet-proof even, but where I painted it thick? It apparently wasn't cured enough, because it re-absorbed the water and turned white and milky again. (See the first photo.)
LESSON #1: Paint this stuff on THIN, and if you paint it thick, use extra drying time. 28 days may not be enough!
I let the glasses sit another 28 days to re-cure them, then washed a test glass. The thick areas got milky AGAIN, but it wasn't as bad as before. At this point I said "screw it" and put the glasses in the oven to try to heat cure them. 350 degrees for 30 minutes (although there's a video where the "Decoupage Queen" does it at 175 degrees for an hour instead) putting the glasses in the oven before turning it on and then letting the oven cool entirely before opening it. I put all the glasses in the dishwasher, and voila! The Mod Podge stayed clear and dry! (See the second photo.)
LESSON #2: Yes, you can heat cure Dishwasher Safe Mod Podge stuff in certain circumstances!
I was covering glass paint on clear glassware; I'm certain if I had coated something like paper then the oven would have singed it. I also let the glasses dry before heat curing. I don't know if it will work for your project, but probably the best thing you can do is to make a test item that you can bake so you don't risk your main item.