The Corona Mill is a cheap alternative to the more expensive roller mills used to crush grains for brewing. Roller mills start at $100 and quickly go up in price. A Corona Mill can be had for as little a $20. With three modifications---two minor, one a little more intense---it can be as effective or even more effective at crushing grains for home brewing. The lower cost will let you save money on other things like good brewing kettles, jet burners, and pumps.

Step 1: The Handle (Manual to Motorized)

This tip has been out there on the internet for a long time. The handle is held on by a thumb bolt. You can replace this thumb bolt with a 5/16" bolt and then use a 1/2" socket on a drill (or some other motor) to crank out your cracked grains.
<p>I like this idea, there's one LHBS down in Knoxville on Martin Mill Pike that is too cheap and inexperienced to go out and buy a $100 grain crusher, but once in a long while I have to buy from them instead of the one on Kingston Pike who crushes it for us. This would be just right for those odd times when I have to buy a few pounds of grain from El Cheapo!</p><p>Thanks for this instructable!</p>
<p>I'm a hair away from buying one but have been unable to locate a technical blow-apart and so still have reservations; the sardine key &amp; wing nut combo outside of the bail--what do they do? Related to grind coarseness adjustment?</p><p>Also, working primarily with corn/sorghum malt; do you have a ball-park estimate for maximum burr-to-plate gap with available after step 3 mod?</p>
Yes the wingnut is for adjusting coarseness.You don't get the best or most even grind with this thing. A roller mill would be the best bet, but for the price this thing is good enough. It's been so long since I made a batch of beer I couldn't tell you what the gap is. Sorry.
<p>what do you mean when saying &quot;If you have access to a mill and lathe you could make one hell of a grinder out of a corona mill&quot;? Is there a better way?</p>
<p>Geez, this is an old instructable and I haven't made an all-grain beer in a while. I can't remember what I meant. Probably it would be easier to cut the threads with the lathe. And I think the burr that you can remove wasn't very flat where the nut and rubber o-ring press against it so you could put it on a mill and level it out. It would give a more even gap for a consistent grind. </p>
Hello All! Can anybody tell me where I can purchase the Corona Mill in Vancouver Canada. Many thanks for your help!
Amazon.ca or www.midwestsupplies.com. You can also search for a victoria mill. Same thing.
Love the tip about making it motorized - very smart. :D
Nothing better than making life easier. . . . And making alcohol cheaper.
I've been putting off the purchase of a mill for years now - I think you've just sold me on finally making the plunge:) <br> <br>One question- it looks like you've got this locked down to just grinding for brewing. is it possible/what would it take to adjust the grind down to make flour for baking?
It does retain its functionality as a flour mill. All you do is adjust the burrs closer together.
I got one very similar looking to this. Mine has no top cover &amp; the hopper is shorter but the grinding doesnt go much finer than meal before scraping the aluminum together &amp; I hear thats not good to eat. <br>Cheap though. :)

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