From what i ve researched baking the mugs in a 300 degree oven for 15 minutes helps set the vinyl.
Can you put heat transfer vinyl on mugs.
Siser easyweed heat transfer vinyl.
F2c digital transfer sublimation multifunction heat press or orangea 12 15 inch 5 in 1 heat press or any heat press with a mug attachment 11 oz ceramic mugs.
All i did was put the mugs in an oven safe dish into the oven.
Transferring outdoor vinyl is scary business on mugs what with compensating for the curve of the mug making sure there are no bumps and most difficult of all making sure that your vinyl is on exactly the right place.
I will say my favorite application method for the heat transfer vinyl on a mug was the mini iron.
Now there is also the easypress mini that will work great for projects like these.
Now if you are going to hand wash your mugs you can probably use either adhesive vinyl or heat transfer vinyl and any of the application methods mentioned.