Monster Mill MM3 Triple Roller Mill Kit

  • Monster Mill MM3 Fully set up
Monster Mill MM3 Fully set up Side view of Monster Mill MM3 Side of monster mill MM3 Monster Mill MM3 Triple Roller Mill Kit back view of Monster Mill MM3 Triple Roller Mill Kit back view of Monster Mill MM3 Triple Roller Mill Kit Looking down in the hopper of a monster mill

Monster Mill MM3 Triple Roller Mill Kit

SKU 40914



Product Details

This is the mill if you're brewing large batches, or want to maximize mash efficiency at any volume. Heavy-duty triple-roller homebrew 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 3/8" crank handle for the ultimate pre-mash gristing experience.

Roller Assembly:
6061 aluminum block frame with three 6" long x 1.5" dia. 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 w/3 flats for drill driving, 2" long outside frame
1/2" integral axles
average throughput 8 lbs/min.

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

approx. 12 x 12" to fit over standard 5 or 6 gallon buckets
radiused top edges and corners
hand-routed grist window

*Does not include pictured crank. Just add a corded electric drill or a 3/8" crank handle for the ultimate pre-mash gristing experience.

Additional Information

SKU 40914

Customer Reviews

Based on 8 reviews
Zoran G.
Great mill but...

Great mill, but from what I can tell, the item I received was previously used (at least hopper, it was dusty and it had scratch marks).

Peter A.
Good mill on a poor base

The mill is great. It does exactly what a mill is supposed to do. The grains are crushed to the proper size and the husk is left mostly intact.

Assembly was easy, except for the two in the bottom/center of the hopper, which requires a stubby screwdriver and an open-end wrench.

The base is terrible.
* The holes in it leave a LOT of play for the rollers. The alignment holes for the end pieces should either be good enough to leave the rollers with only a few thousandths of endplay or they should be slotted.
* It's easily deformed by the bolts.
* It will absorb moisture from the air, becoming even more fragile as it ages.

This base needs to be replaced with a thick/tough plastic.


Mill works fine.
NO feeler gauges or oil included as shown in picture.
I guess the only additional piece you get with this “kit” is the base.

There is a note that’s says “*Does not include pictured crank.” Maybe we need to update the pictures or text.
Mill, hopper and base is all you get.

Jason B.
Monster Mill MM3 Triple Roller Mill

Worked perfectly first time; no problems assembling it, as I laid-out the parts on a tabletop, identified the parts, and then followed the assembly directions.

rory l.
Monster mill MM3

Solid mill, I was having problems with my efficiency and narrowed it down to my crush. So glad I bought this because now I'm at a consistent 89-90%. It's easy to adjust the mill to crush whatever you want. Using my drill I can mill 15 pounds in about a minute. Very well built and easy to use. So glad I bought this.