Putting non-oven proof china in the oven?

Mary 12/07/2017. 6 answers
Home & Garden Do It Yourself (DIY)

I painted 3 porcelain jars with a paint that should stick permanently, but it needs to be put in an oven (150 degrees C) for 35 mins for the paint to set, but I just found out that the jars all say “no oven” on the boxes. Can I still do it? What’s the worst that can happen?

6 Answers


Common Sense 12/07/2017.

The heat of a 150 degree oven is not all that hot, relatively speaking, as ovens can get pretty darn hot.

If you do not set the paint, the jars will begin to peel and be ruined. If the oven is too hot, the jars will break and be ruined. So, the way I look at it, it is worth the chance to put them in the oven to set. I would put them in a tray or line the bottom of the oven with tin foil so if the jars break, the glass will be easy to clean up.


Lib.rare.ian 12/07/2017.

If you're sure the degrees are in Celsius, not Fahrenheit, this could pose a slight risk (it's just above 300 degrees F.)

But hey, if it's truly porcelain, it has already been fired at a much higher temperature.

If you don't mind taking the risk, put them in on a baking sheet (cover it with foil so there's no cleanup) then start the oven and bring it up to temperature. You have a pretty good chance that the porcelain won't crack. The worst that could happen is that bubbles in the clay could expand and pop the pots apart. No explosions, but shards could fly inside the oven.


Mary 12/07/2017.

yeah ok but like, not even if i put them in before the oven is pre heated, and turn the heat a bit down? what’s the chance that it will actually break?


oof 12/07/2017.

They will crack.


ckngbbbls 12/07/2017.

the worst is the jars will break


Lindsay 12/07/2017.

Don’t do it!


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