just a note to say I've bought two brilliant tools this year, my Vari-Matic parts cleaner and your press.
I've been using it for a few months now and it's absolutely fantastic, for crystals and bezels. Bezels where I used to have to fettle the crystal to get them on are fitted with just a squeeze now, and crystals, especially custom press fit ones into nylon gaskets are a doddle.
I've just done a PRS-11 crystal that would have taken all day with my old ebay special and it took a few seconds.
Just thought I'd let you know how pleased I am with it!