yes buddy, I have a thermometer inside the oven, and wait until its reaches 190 then pop the mug in, I also time it using my phone for 9 mins, and as you remove straight away from the oven, remove wrap, wait until 30 secs then remove the paper. sometimes it works great other times I get a strange ghosting kind of like a doubling effect on the text, and sometimes the black is not as black as it could be, like its faded.
Its very annoying as it seems 1 out 3 mugs works, I cant think how people can make money from doing it, and you waste so many mugs, and time when it doesn't work.
I have 30 mugs to do for this charity event and thinking I may need to order about 60 mugs ha ha.
what do you think could be causing the ghosting effect? and when you dunk into water do you keep the green wrap on?
Thanks for you ideas and help though mate :)