- Edited
MediumRoastSteam Well, Cuprajake did say “lend themseves to less retention” to be fair and referencing the (mess of compromises which is the) Sette, the Etzinger Max, the Niche Zero, not to mention the vast array of conical burr hand grinders, it is quite a valid statement - whilst acknowledging that older commercial designs like the Robur almost seem to be out to disprove it, lol.
Admittedly, vertically mounted flat burrs are less prone to retention by their design, but I’m only an enthusiast, not an engineer so this is as far as my bus goes, lol