I use French Presses extensively, have had several of the glass ones crack and/or break over the years, not unexpectedly, but only if I abuse them. I also have a 12oz stainless generic and a 54oz stainless Bodum as well that are relatively unbreakable. I have found that frequenting stores like TJ Maxx, Marshalls, Ollie's and other factory 2nds stores turns up replacement glass and/or relatively inexpensive French Presses that I can cannibalize or add to the collection (like the mini stainless).