Re: Glass bowl "Shisha saver" NEED HELP!!!
its not that glass in general is a bad material its that they used pyrex for it. pyrex is "hard" glass. they heat it up slam it in a mould and then by the time they pull it out it has stiffened up. as apposed to soft glass which is what is used for hot glass work (glass blowing and the like) that will stay soft for 5 mins.
im not to sure about glass cooling slower than ceramics since normally glass has about the same thermal what ever as aluminum.
for a "shisha saver" bowl get one of the tea cup bowls from h-s. you will get 45 mins tops, may be able to push it to an hour if you have a very long burning shisha but its tinny.