Picked up a used k10 in great shape off the buy and sell... and will be using it for single dosing only (no commercial use). Question: my initial impressions are that if mazzer invented fingernail clippers, then compak invented hamburger grinders. My mazzer (see frankenjolly post) now sports a short stainless steel chute that I bent up and glued to the exit of the grind chamber. It works VERY well and retention is nonexistent with a couple pulses and short sweeps with a brush. The exit port in the mazzer is now polished a little and does not retain ANYTHING. But, there is a tendency to clump a little and WDT is a requirement of the daily routine. The K10 came in last night and I set it up and BOY is this thing a little bit like a battleship... the sweepers on my mazzer will nibble at the end of a chopstick if you poke it around in there, but by comparison the sweepers on the compak are the size of chomping shears lookin for fingers to bite off. Remember the closing scene of Terminator 1 where its being crushed inside a hydraulic press? THAT's what the grind chamber of the compak reminds me of. I can turn the spindle of the mazzer with my fingers and spin it by hand... the compak clearly has a transmission of some sort, trying to spin the spindle with my fingers is like trying to push the ram of that hydraulic press up to save the Terminator. The exit port on the compak is much wider and there is a very disconcerting step halfway out, and grinds collect there and for some reason don't sweep very easily with the brush. I'm not sure if its an access problem (there is an E style stainless funnel over the exit port to guide the grounds down) or if the port is just rough. But retention is quite bothersome, and my 'bopper' on the top cannot be used as the K10's top has a rather prominent finger that sticks out that has a screw in it. I think that screw is only to hold in the hopper, although I don't have a hopper on it right now. But I have to make an adapter to insert into the mouth to hold the bopper in place to see if that will blow out the grounds with sufficient force from the exit port.
Is the E type funnel on the outside necessary to reduce clumping? or are exit chutes enough? Does anyone know? I have pulled a couple doses from the K10 and wow! very little clumping compared to the mazzer but I don't know if its the grinder or the stainless funnel...