Answered Robo R1+ Print Bed

You can use binder clips or something to hold a thin sheet of normal window glass/picture frame class (1/8" thick) on top of the existing bed. A few dollars at your local hardware store, lasts a long time, toss if it gets scratched. Unlike borosilicate it will not chip normally. Get it cut tot he size you need or use a standard (but smaller sized) one

 

What Mark said, Borosilicate glass is one of those 3D printer buzzwords that some manufacturers think will help them sell more printers, even I fell for it when I first started out. But after a few chips in my R1 bed, I went to Lowes Home Improvement and had an $8 piece of picture frame glass cut to the same size as the bed (easier to attach) and then went to the Dollar Store and bought a bag of Binder clips. Attach the glass to the bed with the clips on the ends then remove the little wire so it doesn't get in the way. There you go new glass bed.

 

Mine was cut to the size of the current bed, I don't recall the measurements I think 10.5 x 15 inches, but double check.

Just so you know, Home Depot will not cut glass (at least in my area) Lowes Home Improvement will.

 

Bed is 10" x 15" (officially) take a tape measure to it

 

I used float glass for a long time, recently have switched my R1 units to PEI from @Printed Solid and currently loving it. (just placed the PEI directly over the chipped beds) it comes cut to size (a little trimming required if you want to) with the adhesive on the back already.