My grandpa said he would jazz up his marbles by making a little oven out of a tin can. You would heat them up then plunge them into a bucket of water, and if you did it right they would crack up but not fall apart.
Glass will do that when you cool it too quickly. Check out prince rupert drops.
A Lemmy community for historic art pieces overhauled into modern memes.
My grandpa said he would jazz up his marbles by making a little oven out of a tin can. You would heat them up then plunge them into a bucket of water, and if you did it right they would crack up but not fall apart.
Glass will do that when you cool it too quickly. Check out prince rupert drops.