Glass jar stuck in coffee cup - physics? expand/contract?

Question

To save space, I put a cup size mason jar in an empty clean coffee cup.
In the past, I could put that in and take it out easily.
Today the cup is stuck and won't come out.
Anyone know how to remove - use heat, cold, water, fat?
Or give up and throw them both out?

creamtea · Answer

Glad it got fixed. I've done similar with two stacked glasses, more than once! I run hot water from the tap onto the outer vessel.

Nancy · Answer

Wendy - Terrific! It all worked (had to go to second stage with ice)!Won’t repeat that stacking.Many thanks,Nancy

Wendy · Answer

Hi Nancy, I would put the cup in a bowl of hot water and try to pull the jar out first. If that doesn’t work, put ice in the mason jar.Good luck!

Nancy · Answer

Revised: I meant, the mason jar is stuck in the cup and won't come out.

Glass jar stuck in coffee cup - physics? expand/contract?

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