I may read the link which is probably a guessing game at best anyways, but I usually average 80% with the NB grand ave crusher which is at a preset gap now. Thank goodness, too many mooks up there were making flour or other wild ideas. What I would like these mill or LARGE LHBS companies to do especially a new/ unproven one with slotted rollers like this is to use a standard gap on 5 machines with the same controlled RPM and then show me the ASBC sieve test which would without a doubt show its effectiveness or lack thereof.
I still have no need to buy my own mill, but I am still on board with only buying a J. Schmidling. Matter of fact G. Fix did a sieve test using Jacks mill and the results were impressive.
http://schmidling.com/maltmill.htm
[color=#000080]"Dr George Fix, Author and brewing consultant, wrote in the Internet Homebrew Digest:
Subject: MALTMILL
I received Jack's mill in Jan, 1992. Shortly thereafter it was taken to the Dallas Brewing Co (DBC) for the test. The latter was done with a standard and well established screen sieving procedure. It in effect consists of weighing out the grain fractions that are retained on screen meshes of diminishing width. The following is what we measured:
ASBC screen grains retained, % by wt
screen no. width, mm MM DBC Mill
10------------2.000---------14---------13
14------------1.410---------18---------20
18------------1.000---------33---------32
30------------0.590---------25---------25
60------------0.250----------5-----------5
100-----------0.149---------3-----------2
Not Retained----------------2----------3
_______ ___________
100% 100%
For those interested in the details, the malt crushed was a Canadian 2 - row from Prairie Malting. The mill at DBC was made by Mangel, Scheuermann, Oeters, Inc of Huntingdon Valley Pa. It costs around $6500. It is a “BMW” as far as mills go for micros. The Commercial mills have been constructed so they can process 100 to 1000 lbs of grain in minutes. Jack’s mill can not touch that sort of throughput. Nevertheless, the data show that the same type of crush is achieved.
I concluded my original review of Jack’s mill by congratulating him for producing such a good mill. I also observed it was very much worth the price he was asking. Nothing I have seen or heard since then has altered this opinion.
George Fix"[/color]
If you mentioned this test to a LHBS employee or even the mill companies guess what you would hear. Crickets…