I mean, I put them through the dishwasher sometimes anyway, but I’m told I shouldn’t? 🤷🏻♀️
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Crazing (cracks in glaze) can occur in the dishwasher when the glaze and ceramic expand differently. Say the glaze expands less/slower than the ceramic and when the item swells it pushes on the glaze layer, breaking it. Hand washing subjects the item to less heat and thermal expansion.
Chemist here. You can. If you care about it, bad things might happen, but if you have lots of mugs and don’t care about losing a few an evolutionary process will take place where only the strong survive.
If it can’t survive the dishwasher, it just didn’t want to live anymore. So sad.
Disclaimer: none of my chemistry knowledge was used to make this statement. I’m just lazy and don’t like handwashing.
Never know. I was given 4 coffee mugs as a wedding present many years ago. Marriage ended 55 ago but I have used those mugs every day in the microwave and they go through the dishwasher almost as often. My big fear is dropping one.
This is the 21st century! WHY am I washing a mug by hand? Into the dishwasher you go.
Its not the heat. The ceramic is hard but brittle. The concentrated jet spray hitting the wrong spot where there’s a micro-crack or any imperfection could break pieces off.
My mother was a potter. She passed away 13 years ago (RIP).
She always insisted that her stuff was made to be used , not hung on a wall! All of our set dishes is going on 18 years old of regular use and dishwasher washing.
Admittedly, over that span, a few (10-ish%) have cracked for various reasons. But I’d imagine you’d have a similar rate from commercial stuff.
Well made ceramic dish ware should be able to run through the dishwasher. If it can’t, it’s wall art.
After moving to an old house without a dishwasher, I’ve never broken more ceramic dishes as they bang or slip out of my hands entirely and are chipped, smashed, dead.
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