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We start with the frame of the cleaner. The lengths of wood needed are 42" and 14".

A notch is cut into one cross member. This acts as an outlet for the screenings or debris.

The notch is located 1 1/2" in from the end and has dimensions of 1 1/2" x 4".
The cross members (14" long) are nailed inside the rails (42" long). The resulting box has dimensions of 42" x 15 3/4".
A horizontal cross member is added to the frame. It acts as a nailing surface for the next step.
Sheet metal (15 1/2" x 7 1/2") is nailed to the frame.

Hardware cloth (15 1/2" x 35") with a 1/4" mesh size is stapled to the frame. We want the corn to pass over the hardware cloth while the smaller material will fall through it.

The wire mesh overlaps the sheet metal by approximately 3/4".
A guide is added to direct the flow of cleanings towards the outlet. The corn cleaner is shown upside down in this photo.
The underside of the corn cleaner is shown with sheet metal nailed in place with roofing nails. The sheet metal is cut and nailed along the edge of the guide piece installed in the previous step.

This photo shows the diy mini corn cleaner right side up.
Rails are needed to keep the corn from spilling over the sides of the screen. They are 42" long and are mounted with short lengths of wood.
The rails are installed as is the guide that will direct the corn to the side as it exits.
The finished cleaner is shown here with legs (28" and 40" long) nailed in place.

The diy mini corn cleaner has a 20 degree slope.

The 5 gallon bucket is 18" in height and can pass under the front end of the cleaner with 2" of clearance.