Thick Glass, Thin Glass, Borosilicate Glass! What should I use?

[Roxy]

I´m using a simple 4 mm float glass in my I3 and have no problems with it. The important thing is that you´ll need a heat bed which spreads the temperature equaly over the whole area. I heat my glass up to 125°C, no issues with that temperature.

I'm also using cheap, thin glass. I got it at a Craft store for use in picture frames. I specifically wanted thin glass because that would help the surface be closer in temperature to what the heat bed is at. I also wanted thin glass because I used my Dremel tool with a diamond burr to drill holes in it for my spring loaded mounting screws to go through it.

So far no problems with cheap, thin, normal picture frame glass!