On 25/12/2020 20:00, Joe Gwinn wrote:
On Thu, 24 Dec 2020 18:27:06 -0500, "Jim Wilkins"


Molten glass does this:
https://en.wikipedia.org/wiki/Prince_Rupert%27s_drop
Also known as Czar's Tears.

Joe Gwinn

I'm not sure I'd do it again but as a amateur glass blower a glassblower
I knew who had experienced it before convinced to have one go off in my
hand, no damage just felt like I'd been high fived by the terminator.