Oginme
Grandmaster Brewer
One of the reasons that the commercially sold grain mills need a knurled roller is that the roll diameter is way too small to achieve a good crush and material flow. I have experience with size reduction methods (grinding phosphorescent pigments from blocks down to fine particles and making specialty pigments). We typically use rollers that are in the range of 12" to 14" diameter at a minimum for fine particles. This means positive feed into the gap. The narrowness of the gap due to the large rollers ensures even distribution and action upon each kernel, focusing on crushing rather than pinching and ripping. Very little of the material being ground is rejected from the nip.
It's for this reason I purchased a corona type mill instead of one of the standard barley crushing units commercially available. After modification, my grind comes out with mostly intact husks and large sand sized grain particles.
It's for this reason I purchased a corona type mill instead of one of the standard barley crushing units commercially available. After modification, my grind comes out with mostly intact husks and large sand sized grain particles.