Monster Mill Grain Mills - Complete MM2 and MM3 Kits

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Product details

Includes roller assembly, base, and steel hopper - just add a corded electric drill or a crank handle for the ultimate in pre-mash gristing experience. Available as a 2-roller mill or 3-roller mill. The 2-roller model is pictured.

MM2 Package

A heavy-duty, fully-adjustable all-purpose grain mill for homebrewers of all levels and batch sizes. Includes roller assembly, base, and steel hopper with 11 lb. capacity - just use a corded electric drill or add a 1/2" crank handle for a consistently perfect crush every time.

The MM2 boasts a double-roller configuration, with an adjustable gap spacing between the two rollers - this means you can set the gap tighter or coarser to dial in your efficiency and custom tailor the crush to suit your system, sparging or steeping method, and malt from batch to batch.

Roller Assembly Features:

  • 6061 aluminum block frame with two 6" long x 1.5" diameter knurled steel rollers riding on SAE 841 oil-impregnated bronze bushings
  • Adjustable roller gap spacing with 0-0.070" range
  • Dual eccentric gap spacing adjusters built from stainless steel to prevent galling
  • 1/2" integral drive shaft with 3 flats for drill driving or a hand crank
  • 2" long outside frame
  • 1/2" integral axles
  • 6 lbs/min average throughput 

Hopper Features:

  • Heavy duty galvanized steel
  • 9" overall height
  • 11.5" x 12.75" opening at the top
  • 11 lb. capacity

Base Features:

  • Approx. 12 x 12" to fit over standard 5 or 6-gallon buckets
  • Radiused top edges and corners
  • Hand-routed grist window

MM3 Package

The 3-roller option is perfect for large batches or those looking to maximize mash efficiency at any volume. This heavy-duty, triple-roller mill is designed for motorization (can be powered with a corded electric drill) and features an average throughput of 8 lbs./minute and adjustable gap spacing for fine-tuning your crush.

Why three rollers?

The MM-3 crushes all your grain twice with one pass through the mill. It starts with a preliminary crush through the initial fixed gap between the top two rollers and then ends with a pass through the second gap between the drive roller and the bottom third roller. The initial pass slightly flattens the grain, and gets it ready for the next crush that breaks apart the grains and loosens the starch with minimal husk damage.

Includes roller assembly, base, and steel hopper with 11 lb. capacity - just add a corded electric drill or a 1/2" crank handle for the ultimate pre-mash gristing experience.

Roller Assembly Features:

  • 6061 aluminum block frame with three 6" long x 1.5" diameter knurled steel rollers riding on SAE 841 oil- impregnated bronze bushings
  • .060" fixed primary gap, 0-0.065" fully-adjustable secondary gap
  • Dual eccentric gap spacing adjusters built from stainless steel to prevent galling
  • 1/2" integral drive shaft with 3 flats for drill driving
  • 2" long outside frame
  • 1/2" integral axles
  • 8 lbs/min average throughput

Hopper Features:

  • Heavy duty galvanized steel
  • 9" overall height
  • 11.5" x 12.75" opening at the top
  • 11 lb. capacity

Base Features:

  • Approx. 12 x 12" to fit over standard 5 or 6-gallon buckets
  • Radiused top edges and corners
  • Hand-routed grist window

Additional information

SKU

40913, 40914

Customer Reviews

Based on 36 reviews
89%
(32)
6%
(2)
3%
(1)
0%
(0)
3%
(1)
D
Dennis C.
Well built BUT with a design flaw

The mm3 mill is stout, made with good materials. However, there is a significant design flaw that keeps me from giving it more than 3 stars. The adjustable roller set screws must be removed to install the hopper, and roller gap cannot be checked with the hopper in place. When the screws are removed the position of the roller can change. Upon contacting the manufacturer I was instructed to set several gaps prior to installing the hopper and mark them with a sharpie on the adjustment **** and the mill body. Doing this I find that the distance between my marks for .040 and .045 are less than 1/32-inch. Really?! How hard would it have been to 1. design the hopper so that the gap can be checked when it is in place, or 2. preset and scribe the **** and body for gaps with a distance that is actually discernable. Seems like being able to check the gap with everything in place would be the preferred solution. My guess is that everything was designed before this issue was discovered by users. If I had known of this problem I would definitely have purchased a different mill.

R
Robert M.
Great mill

After my first mill arrived damaged I was sent parts to fix it but they were not the correct size. I was sent a new mill and it was worth the wait. Such a time saver. Would highly recommend

W
Wesley M.
MM3 Mill aka The Beast

This mill has worked great the couple of times I've used it. It is heavy duty. Way heftier than my previous 2 roller. I'm a huge fan so far.

W
Will E.
Monster Mill MM3 - Fantastic mill with a bit of a learning curve

Finally made the jump into milling my own grain, and after doing a lot of research, decided on the MM3.

Assembly was easy, although I noticed that the thumb screws that lock in the roller gap were bent due to damage during the shipping process. After milling a couple of batches I realized this was causing them to slip loose and let the rollers drift apart. I contacted Northern Brewer and received a quick response offering to replace the mill or give a credit to buy new thumb screws. Being a DIY person, I took the credit and picked up some 1/4" - 20 bolts at the hardware store and ground the tips to a round end that slotted into the groove on the adjustment knob. Rollers are now firmly locked into place.

If you're adjusting the rollers, be sure to read the instructions carefully, as it is possible to set the front roller gap correctly on both sides but have an uneven gap on the back roller (which I managed to do the first time). Also, if you're using a hand drill to drive this, get comfortable with the speed settings on it to keep a slow and steady grind.

Even with some false starts on my first few batches, I was still getting well milled grain. Now that I've got it dialed in, I'm incredibly happy with this mill. Solidly built, easy to operate, and gives me an amazing amount of control over how coarse or fine my grind is. And huge thanks to Northern Brewer for prompt and helpful customer service!

K
Keith D.
Heavy duty mill

New Monster Mill is great! Heavy duty and fast milling. Much better than my previous mill.

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Monster Mill Grain Mills - Complete MM2 and MM3 Kits

Monster Mill Grain Mills - Complete MM2 and MM3 Kits

Customer Reviews

Based on 36 reviews
89%
(32)
6%
(2)
3%
(1)
0%
(0)
3%
(1)
D
Dennis C.
Well built BUT with a design flaw

The mm3 mill is stout, made with good materials. However, there is a significant design flaw that keeps me from giving it more than 3 stars. The adjustable roller set screws must be removed to install the hopper, and roller gap cannot be checked with the hopper in place. When the screws are removed the position of the roller can change. Upon contacting the manufacturer I was instructed to set several gaps prior to installing the hopper and mark them with a sharpie on the adjustment **** and the mill body. Doing this I find that the distance between my marks for .040 and .045 are less than 1/32-inch. Really?! How hard would it have been to 1. design the hopper so that the gap can be checked when it is in place, or 2. preset and scribe the **** and body for gaps with a distance that is actually discernable. Seems like being able to check the gap with everything in place would be the preferred solution. My guess is that everything was designed before this issue was discovered by users. If I had known of this problem I would definitely have purchased a different mill.

R
Robert M.
Great mill

After my first mill arrived damaged I was sent parts to fix it but they were not the correct size. I was sent a new mill and it was worth the wait. Such a time saver. Would highly recommend

W
Wesley M.
MM3 Mill aka The Beast

This mill has worked great the couple of times I've used it. It is heavy duty. Way heftier than my previous 2 roller. I'm a huge fan so far.

W
Will E.
Monster Mill MM3 - Fantastic mill with a bit of a learning curve

Finally made the jump into milling my own grain, and after doing a lot of research, decided on the MM3.

Assembly was easy, although I noticed that the thumb screws that lock in the roller gap were bent due to damage during the shipping process. After milling a couple of batches I realized this was causing them to slip loose and let the rollers drift apart. I contacted Northern Brewer and received a quick response offering to replace the mill or give a credit to buy new thumb screws. Being a DIY person, I took the credit and picked up some 1/4" - 20 bolts at the hardware store and ground the tips to a round end that slotted into the groove on the adjustment knob. Rollers are now firmly locked into place.

If you're adjusting the rollers, be sure to read the instructions carefully, as it is possible to set the front roller gap correctly on both sides but have an uneven gap on the back roller (which I managed to do the first time). Also, if you're using a hand drill to drive this, get comfortable with the speed settings on it to keep a slow and steady grind.

Even with some false starts on my first few batches, I was still getting well milled grain. Now that I've got it dialed in, I'm incredibly happy with this mill. Solidly built, easy to operate, and gives me an amazing amount of control over how coarse or fine my grind is. And huge thanks to Northern Brewer for prompt and helpful customer service!

K
Keith D.
Heavy duty mill

New Monster Mill is great! Heavy duty and fast milling. Much better than my previous mill.