- carefully cleaned glass before printing
- thin layer of glue spray
- thin layer of glue stick
What worked best: Sugarwater.
Wipe half a teaspoon with a quarter of a paper tissue over the preheated glass plate, until it starts getting sticky, then print on it.
It's a very thin and uniform adhesive layer that is easily cleaned off and has just the right amount of stickiness to hold things while printing and to easily pluck them off afterwards. If necessary, the bottom of the printed object can be easily and quickly cleaned with a wet tissue.