Jump to content

handles heating up in microwave after several years of not doing so!


Recommended Posts

Several mugs I made some years ago now can not be put in the microwave for re-heating coffee because the entire mug gets too hot to handle.

The clay was B-Mix cone 5. Different glasses but I think they included Running Hot Chowder. (Back before the word Running was added to the name!)

Any idea why?

Link to comment
Share on other sites

10 hours ago, Ginny C said:

Any idea why?

Most likely they have absorbed water / liquid. Unfortunately I don’t have an easy way to remove and test other than firing in an electric kiln with a hold at let’s say 190 for a few hours then maybe raise them to 250 degrees for several hours. If you had an evacuation pump this would be easier and not require the heating. To @Rockhopper point above, I assume they overheat in several different microwaves, easy to try…….

Sorry, Maybe someone here will have a better idea.

Edited by Bill Kielb
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.