I played around today with a bean cooling solution I thought op. In stead of sucking air through the beans I thought it would be nice to blow air through them. This way I would get rid of most chaff and cool the beans fast.
So I used a garden blower..... 180km per hour and 8m3 per minute
I wonder why I didn't think of what would happen with that much power :
And this was left of 1200g of beans :
Now there's a room which has coffee beans in every corner and crevice