Cracked ceramic is unsafe.
Seal ceramic mug.
A sudden jar or clink also may turn the crack into a shattered mug.
Or tape down from the lip of the mug about 3 4 to 1 in turn the mug upside down and spray with a clear sealcoat don t get any inside or where a person s lips would touch on the outside.
It could cause leakage that could lead to mold permanently ruining your mug.
Otherwise you can bake the paint onto the mug by carefully heating it in the oven.
Put the mug to be painted upside down on stick it on a plastic cup.
With the next stroke overlap by 1 16 or 2mm and work your way around.
From shop elseamarart.
Favorite coffee mugs naturally see a lot of use often resulting in faded images and sadly cracks.
To seal acrylic paint on ceramic mugs you may need a high quality sealant or varnish made for acrylic paint to spray or brush over your work.
You don t want all your hard work and the cash you spent on the supplies to go to waste.
A customized mug can also make a perfect gift for someone close to you.
If you want you can modge podge just the painted area after you bake it.
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Use the biggest softest synthetic brush you can find and quickly brush downward in an even stroke from tape to tape.
Leopard seal ceramic coffee mug free personalisation madcapmugs.
That said you d want your design to last longer on that mug and not peel off easily.