Electric Brewing Supply 30A BCS Giveaway!


Home Brew Forums > Home Brewing Beer > DIY Projects > Grain Mill Gaps
Reply
 
LinkBack Thread Tools
Old 05-15-2012, 08:32 PM   #1
Huaco
HBT_SUPPORTER.png
Feedback Score: 0 reviews
 
Huaco's Avatar
Recipes 
 
Join Date: Dec 2011
Location: Just south of Cow Town, Tx
Posts: 1,227
Liked 111 Times on 69 Posts
Likes Given: 33

Default Grain Mill Gaps

What are the "preferred" gaps on a 3 roller grain mill?

Also... Are the gaps set before or after knurling the rollers?

__________________
Huaco is offline
 
Reply With Quote Quick reply to this message
Old 05-16-2012, 07:01 PM   #2
Huaco
HBT_SUPPORTER.png
Feedback Score: 0 reviews
 
Huaco's Avatar
Recipes 
 
Join Date: Dec 2011
Location: Just south of Cow Town, Tx
Posts: 1,227
Liked 111 Times on 69 Posts
Likes Given: 33

Default

Anyone?

I found some 1-3/4 round stock in the scrap pile. Not sure if it is hardened or not. Can hardened stock be knurled?

__________________
Huaco is offline
 
Reply With Quote Quick reply to this message
Old 05-16-2012, 07:29 PM   #3
outside92129
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
outside92129's Avatar
Recipes 
 
Join Date: Apr 2011
Location: Carlsbad, CA
Posts: 1,147
Liked 52 Times on 44 Posts
Likes Given: 23

Default

monster mill(mm2) has their first gap around .60", crankenstein(3e) uses .70". The second gap is adjustable on both, 0" to .65" on MM, .1" to .7" for CS.

For harder material you would need more specialized (harder) tools. If this is just a one time project it's probably not worth buying cobalt, and would be easier/cheaper just to put a different finish on it. Maybe sand blast/steel bead it or dremel some grooves into it.

__________________
outside92129 is offline
 
Reply With Quote Quick reply to this message
Old 05-16-2012, 10:59 PM   #4
BryngelBrau
Feedback Score: 1 reviews
Recipes 
 
Join Date: Sep 2010
Location: Arlington, MA
Posts: 34
Liked 4 Times on 2 Posts
Likes Given: 26

Default

The MM 3 roller mills are recommended at .037 - .055". I am running mine at 0.042" measured at the knurling with a fit that allows me to freely slide the gapper across the whole length of the rollers, I had it with a tight fit at 0.040" and I had to run to the LHBS for some rice hulls. I will probably adjust mine down a little more but I am getting about 75% efficiency now.

__________________
BryngelBrau is offline
 
Reply With Quote Quick reply to this message
Old 05-16-2012, 11:53 PM   #5
Huaco
HBT_SUPPORTER.png
Feedback Score: 0 reviews
 
Huaco's Avatar
Recipes 
 
Join Date: Dec 2011
Location: Just south of Cow Town, Tx
Posts: 1,227
Liked 111 Times on 69 Posts
Likes Given: 33

Default

Are you gaping with feeler gauges?

__________________
Huaco is offline
 
Reply With Quote Quick reply to this message
Old 05-17-2012, 01:06 AM   #6
heckels
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2011
Location: Sioux Falls, SD
Posts: 718
Liked 49 Times on 40 Posts

Default

Quote:
Originally Posted by Huaco
Are you gaping with feeler gauges?
I think that's what she said...
__________________
heckels is offline
 
Reply With Quote Quick reply to this message
Old 05-17-2012, 02:19 AM   #7
BryngelBrau
Feedback Score: 1 reviews
Recipes 
 
Join Date: Sep 2010
Location: Arlington, MA
Posts: 34
Liked 4 Times on 2 Posts
Likes Given: 26

Default

Quote:
Originally Posted by Huaco View Post
Are you gaping with feeler gauges?
yes the 0.042" that I am currently using was done properly with a feeler gauge previously I tried a 0.040" but had it tight and it was way too fine a crush. dough balls formed instantly and too a great extent, what I thought was 0.040" was probably in the 0.03's]
__________________
BryngelBrau is offline
 
Reply With Quote Quick reply to this message
Old 05-17-2012, 02:40 AM   #8
Malticulous
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2008
Location: St. George Utah
Posts: 4,137
Liked 56 Times on 47 Posts
Likes Given: 74

Default

I use .030 with my BC. If I had a MM3 I'd set it to .024.

__________________
Malticulous is offline
 
Reply With Quote Quick reply to this message
Old 05-17-2012, 03:04 AM   #9
passedpawn
Waste Allocation Load Lifter - Earth Class
HBT_MODERATOR.png
Feedback Score: 0 reviews
 
passedpawn's Avatar
Recipes 
 
Join Date: Apr 2009
Location: ☼ Clearwater, FL ☼
Posts: 19,253
Liked 3480 Times on 2154 Posts
Likes Given: 2987

Default

.035 on my JSP Malt Mill. Feeler gauge.

[I'm sorry, I didn't read the OP fully. My mill is a 2 roller]

__________________
Hey goomba I love how you dance the rumba
But take some advice paisano learn-a how to mambo
If you're gonna be a square you ain't-a gonna go anywhere.
passedpawn is offline
 
Reply With Quote Quick reply to this message
Old 05-17-2012, 03:07 AM   #10
Huaco
HBT_SUPPORTER.png
Feedback Score: 0 reviews
 
Huaco's Avatar
Recipes 
 
Join Date: Dec 2011
Location: Just south of Cow Town, Tx
Posts: 1,227
Liked 111 Times on 69 Posts
Likes Given: 33

Default

So these gaps are obviously set tot the top of the knurl, right?

__________________
Huaco is offline
 
Reply With Quote Quick reply to this message
Reply



Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
What RPM do you run your grain mill at? Seabee John DIY Projects 100 03-05-2013 01:31 AM
Grain Mill ctango DIY Projects 5 11-22-2011 08:56 PM
Grain Mill HELP! Mpavlik22 DIY Projects 9 08-09-2011 02:45 AM
My Grain Mill brieuxster DIY Projects 5 04-13-2011 06:15 PM
grain mill CAD? Gusizhuo DIY Projects 20 11-24-2007 05:40 AM