http://www.potsaa.com/pedestal-mugs/

How can you separate 2 cups stuck?
1 mug China has a square pedestal base. She is stuck in a stoneware mug. The second quarter is a "normal" curved shape. The Mug cornerstone a little here and there but we can not separate them. There are 2 problems Smashing with 1 mug: ideally, I'd like to keep both the cup and the inside is more beautiful. Any suggestions? Maybe a heater (which?) / Lubricants / something more creative?
Unfortunately, the grease will not work. They have become hooked because of their rate of expansion different because of the heat. Get a pan, some ice and fill the kettle. Fill the cup porcelain square base with ice at the beginning, then fill it with water to seal all the holes in the ice. Leave for about 5 minutes. Meanwhile, boil the kettle and fill the pot with enough water boiling to come 3 / 4, the path of earthenware mug. Immerse the earthenware mug and let stand at least 5 minutes. Time is your friend with that. Top up with hot and cold respectively if necessary. If the heat affected China, how do you put tea in it? Some care is needed, but sudden changes in temperature are not good, so be sure not to splash hot cup of cold porcelain and it shattered.
2007 – graduate show