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-   -   Corona Mill Users - Evaluate my Crush Please (http://www.homebrewtalk.com/f36/corona-mill-users-evaluate-my-crush-please-133814/)

RighteousFire 08-26-2009 12:35 AM

Corona Mill Users - Evaluate my Crush Please
So I recently found a Corona style mill from a local guy who doesnt have the love for home brewing anymore so I reap his leftovers.

I'm doing my second all grain soon, an imperial stout, and in preperation I tested my mill to see what kind of crush i can get.


I want to know what everyone thinks since it seems like corona crushes and roller crushes seem to look different.


JMSetzler 08-26-2009 12:52 AM

In my limited experience, that crush looks a little coarse compared to the crushes I have made with my Barley Crusher. There also appear to be some that haven't been crushed at all...

bradsul 08-26-2009 01:16 AM

+1 that is very coarse. The wiki has a page for evaluating your crush. The corona example on the page happens to be mine.

HotbreakHotel 08-26-2009 02:22 AM

+1 on coarse. I use a corona mill too.

rod 08-26-2009 02:26 AM

i use a corona knock-off and had to adjust with spacers to get a finer crush.
i don't think yours is fine enough yet to get good effeciency.

chase 08-26-2009 02:40 AM

Too course.

You'll want more flour than that. Plus I see a few whole kernels. I get a consistent 73-75% efficiency on my mill for average gravity beers. If I close the gap any I start getting slow sparges. Any wider and my efficiency drops. I think my numbers are pretty average for corona mills. Something to shoot for.

VTBrewer 08-26-2009 03:00 AM

What would happen if he ran a handful of that thru again? I've not used a corona mill..would it get more uneven or is it better to just play with the gap?

bradsul 08-26-2009 03:04 AM

Running it through multiple times will help, but lessening the gap would be better overall. Basically crush until you're scared - then crush a little more. :D

If you start getting slow or stuck sparges, back it off a tiny bit and there you go. While you're working it out it's not a bad idea to keep some rice hulls around just in case.

wilserbrewer 08-26-2009 04:29 AM

40 % of that grain is not crushed at all...MORE CRUSH! IMO there should be no uncrushed or whole grain at all.

IXVolt 08-26-2009 04:10 PM

Here's what my crush looks like from my Corona. I'm getting 86% eff with this.


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