I agree about the conduction for glass-I think it heats very slowly - but I was imagining that due to its greater thickness it would spread the heat out more evenly. And of course it is flatter. But in the end (agreeing with you!) I am not sure why people are using it then. Creality is low-end and I would be interested in how well other printers do here-especially how they handle the beds--I note that the crealtiy has a heading pad of about 75x75cm under the aluminum bed-probably should really extend across the whole bedThanks for the replyFritz