01-11-2012, 11:17 PM
I think it also depends on your composition of glass too because there is more than one composition given the use for it. But honestly, if they could do it in BC times before there was technology then there has to be a way to make it work. After all they were limited in what they had as would be the same now. So there has to be a way to do it and I will have to continue looking around to figure out exactly how they did it.