are several roller mills on the market that are specially designed
for crushing malted barley to be used in the brewing process.
These are wonderful, but there are other options available.
Since I received a Corona-type mill
for free, I've started using it and have been quite pleased
with the results. My brewing efficiency does not suffer. I've
removed the handle from mine, cut the head off a bolt that would
thread into the hole for the handle, then attached a drill to
that bolt. It's a cheap and easy way to motorize
the mill. While it may be good exercise to turn the crank
by hand, crushing over ten pounds worth of grain
by hand takes a fair amount of time. I can run through that
amount in only a couple of minutes with the drill. Another improvement
I've made to the mill is an addition of an attachment to direct
the crushed malt downwards into my mash tun. This was made of
a plastic juice bottle with holes cut in all the right places,
and a plastic bag. Total cost of my mill setup as currently
in use is under $10.