If you try—for example dropping a full half-gallon canning jar on a cement slab—you can break 'em.
It's true; dropping one into the sink (as I did the Chemex) might even work, but the thing is: there are always more Mason jars to be had .....for free....breakage doesn't hurt so much....
Also I love it that you (I think it was you) turned me on to those wonderful plastic lids that fit the Masons. So much easier for non-pressurized uses than the old two-part metal lids....and also cheap....
Susan