Hi there I have not done any mugs for ages but have been sublimating onto fabric loads without any problems. I have the Red 3D sublimation machine and a ricoh 3110 printer with sawgrass paper. The mugs came with the machine so am not sure of brand. I cooked them for 360 seconds at 190 degrees. When they came out of the oven I dunked them in luke warm water to cool them down a bit and half the ink came off in the water! The mugs are a dark blue with a white patch on for the image. I was really disappointed with the results. I did do a search for the problem on the forum but with no luck
I do not remember having any of these problems before but its been a couple of years - any clues? Thank you