I just got back from Argentina with three mate gourds and started to prepare them for first use (put the yerba, add cold water and leave for ~1 day, I was told, is the first thing to do).
To my surprise, the first one started leaking right during that first day, and the other two cracked during the first session - one of them is wooden, the other one made of actual gourd.
So my question is, is this just bad luck or could it be because of some mistake in the how I prepared it - for instance, using water that's too hot?