I’ve been eyeing this machine for a while since my goal is to really control my press just like I have with the Aero Press. Still haven’t decided if this is a worthwhile investment.
I have one and I love it! The first two years I managed with a conical burr hand grinder, but eventually I decided to switch to an electric grinder and it is much less work.
The silicon O-rigs I’ve had to change after about 3 years because the cylinder became a bit loose and water would leak while de-pressurizing.