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Picture of Build a Quiet Home Brewing Grain Mill

If you've been to a home brewing supply store or happen to grind your own grain then you know how loud grain/barley mills can be. I built this setup for Company Shops Market, my local cooperative grocery store when they started carrying home brewing grains in the bulk food section (best idea ever, now I can grocery shop and pickup brewing supplies in one trip). The problem was that a traditional bare-bones grain mill and power drill setup would have caused too much noise for the peace and quiet of our neighborhood grocery store. This setup cut down the noise from the mill by 12 dB. It's still noisy, but it doesn't resonate through the whole store anymore. A friend of mine built the wooden box and platform. Adding the noise canceling Sorbothane bushings, acoustic sheets and mounts took about an hour.

Step 1: Step 1: Setup the Grain Mill

Picture of Step 1: Setup the Grain Mill
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There are lots of good grain mills out there. A few that will work with this project are:

The Barley Crusher (7 & 15lb versions)

Monster Mill

Captain Crush Grain Mill

Most grain mills come with a hand crank. Removing the crank arm exposes the shaft which usually fits into the chuck of a power drill. In this installation we used a pretty standard 120V corded power drill. Lots of torque but lots of noise too. We built a wood box with a variable speed controller to allow for easier operation. The controller plugs directly into the stock cord of the drill. This controller allows the mill to operate at lower speeds which is better for the grain and noise. The whole setup is mounted on a wood shelf which will be installed near the bulk food section of the grocery store and allows a 5 gallon bucket to sit under the mill to catch the grain.