Simon, those bands work a treat!!! Saved me from so much hassle trying to peel off the shrink wrap. I did though do a trial with placing a cut silicone sheet taped on top of the artwork before the band is fitted and this really helped with gassing issues. Without the paper then the bands got all discoloured as well but by cutting A4 sheets into strips (short width of A4 is ideal length to wrap around the mug) then this prevented it. Could I ask two things: (1) What is the max number of enamel you have tried in the oven and do you alter the time if say over 8 (our max at the moment)? (2) After taking out do you wait for the temp to go back up as sometimes the temp drops to 150/160 whilst door is open? Cheers