Quoting from bartender Jeffrey Morgenthaler's recent book: > My experience using these has resulted in more than a few cracked ice balls, whose deep fissures e

Quoting from bartender Jeffrey Morgenthaler's recent book: > My experience using these has resulted in more than a few cracked ice balls, whose deep fissures essentially increase the surface area of the ice ball, negating any benefits in that department. I had pretty much the same experience with my molds (I was using the Tovolo brand, rather than the one you linked to, though).