As I was experimenting with different materials (Nylon, T-Glase, etc.) printing on my RoBo with E3D hotend, I followed the very common recommendation of printing T-Glase directly on heated bed at 70-80C, to get a nice smooth and shiny glass-like bottom of the print... After several attempts that failed mid-print for some other reason (I'll probably have another thread to discuss that), the last one came off the bed after cooling off, chipping the glass bed in the process! See attached pictures. So, couple questions: 1. Should it be safe to print directly on the borosil bed - any material in general or T-Glase specifically? 2. What can I do to replace the glass? Is it a tech support matter? Are there parts available for sale from RoBo3D?