Thanks for posting.
This might be revolutionary for a home setup!

Definitely watching this one. It's interesting that the rollers appear to be two pieces each with grooves or teeth that angle toward the middle

I think the teeth are like that so beans feed towards the center and don't fall off the ends. I doubt heat will be a problem for a grinder that's only supposed to grind 100 grams at a time, the ones that need water cooling more commonly run continuously and are powered by 50HP and up motors.

Ira

Yea, I always thought the idea of water cooling for a small batch grinder for home use was unneccessary. I would think It would take quite a bit of coffee to heat up three sets of rollers.

BaristaBoy E61 wrote:This might be revolutionary for a home setup!

And even that is an understatement. Just wow.

Wow! I guess I'm just going to have to keep playing Powerball!

I've made models in my head but I ran into the same problems. What texture do you make the surface of the mills? What distance are the rollers from each other in the first two non adjustable stages?

You can find some simple rollers for sale from brewer supply stores to get a good look at the rollers, they are mostly knurled to get the grains to engage.

Seems like a ton of testing and investment would be required. Go Frank!