The glass is about 1/8" (~3mm) thick. I would gladly sacrifice that for a smooth. easy to print on surface? I just put glass on our Replicator XL this week and the results are awesome! Been printing ABS on it all week with Elmer's glue sticks. Last night I did one of those 8" tall fin vases, a 14 hour print that came out great!

IMG_4100.jpg IMG_4101.jpg