The Deepeeka stone grinder. Update and results of first try.

[Lugorix]

Does it help to mention that flat-surfaced querns were used differently than slope-faced ones? The flat ones would be better termed "oscillating querns", and the sloped-face type called "rotary querns." The difference in motion is shown on the wear marks on artifacts. Beehive querns are actually oscillating querns. They have pecked surfaces and lack grooves. To confuse the matter, Romano-British "flat querns" had sloped faces, and are rotary querns.

It might be worth experimenting by oscillating this grinder rather than rotating it. Curious what the reslts might be.