I've offered this to a few folks via private message now, so I'll just post it here. Although my mill has steel rollers, I'm only offering to machine aluminum ones. I'd have to charge a lot more for steel rollers because they take so much longer to machine. Send me a PM to set up the details.
Your choice of length 2" dia. aluminum roller (at least 3" long, no more than 12").
1/2" OD steel drive axles threaded into the ends - I'll include those, so I know they fit. Unless you tell me otherwise, the axles will extend 3/4" from the roller ends, except for the drive axle, which I'll make 2 3/4."
You'll need to fabricate a housing with 1/2" ID bushings/bearings, a drive mechanism, and a hopper.
Cost by this formula:
(Roller length * 5) + $10
i.e., 10" rollers would be $60.
Subtract that extra $10 for a few homebrews.
And to answer the question from runhard - I haven't powder coated the hopper yet, but I'll post a pic when I do. Maybe I mispoke - I noticed a significant amount of completely intact kernels. I think setting the gap just a little tighter would take care of that. I enjoy my shop way to much...thank God SWMBO puts up with it!