22 Oct
2017
22 Oct
'17
12:43 p.m.
[Without having read any other replies] I'd try dropping molten glass some distance through the air to make it form into a sphere, and have it land in water to make it rigid. —Dan Henry Baker wrote: ----- It's the year 1500, and some wealthy patron wants a transparent glass and/or rock crystal sphere perhaps 6-8" in diameter. How would you fabricate it? ... ... -----