Flow-Through Vermicomposter

Tool Concept
Functional Prototype

Primary problem statement:
I am a Student and I want a tool to vermicompost food scraps and garden waste for a small farm because vermicomposting can help turn waste into a valuable organic input.
Read more about this problem statement


The purpose of this tool is to provide a space to vermicompost a variety of waste ( animal manure, food scraps, or other organic waste) with worms and produce safe worm castings, a valuable resource. The worm castings can be utilized in a variety of ways on the farm or sold to other farms and gardeners.
westluna25's picture
HI MNick, I like your design. I have a large scale worm farm in Oregon and would love to talk to you more about this design. What would be the best way to contact you? Thank you. -AJ
Permaculture Walkabout's picture
Planning on upgrading to this model as I'm using an old bathtub currently for my Worm Farm
Documentation Wiki: 

The first shelf was put in place 1.5 ft from the ground and the decking and beams where welded in place.(figure 1)  Two 1/4inch steel rods where welded on top the the decking. (figure 2-3)

A second set of decking was inverted and modified. A cut was made on one side of the decking and 10 inches of wire mesh was removed and the remaining end was reattached.(figure 4-5)  Angle iron was added so there was a scraper bar at least every 10 inches.

The modified deck in placed upside down on top of the two steel rods. A second set of beams are inverted bolted on to create a channel that locks in the modified deck. (figure 6-8) Additional beans are added the top beam is 5ft from he ground

A support bar is welded to the base of each upright to serve as the base for the hinge. (figure 9)

A simple hinge is created from pieces (formally a display rack) found at the salvage yard and attached to the support bar (figure 10-12)

Holes are drilled in the center of each scraper bar (figure 13) steel cable is then fed through and loped around each scraper bar. (figure 14)

Landscape timbers are cut to make 5.5 ft long wooden levers and inserted into the hinge assembly. The either end of the cable is attached to the lever (figure 15) so that the modified deck and scraper bars move the length of the bin.

The side walls are made from metal roofing that was cut down to 3ft long pieces (figure 16-17) These pieces are screwed the the uprights and beams.  Flashing was added on the top to prevent sharp edges (figure 18) Holes in the side walls are made to accommodate the steel rods and cable (figure 19)

The outside of the vermicomposter is sprayed with a scratch & rust resistant paint. A mechanism is added to keep the levers upright when not in use. (figure 20-22)


westluna25's picture
please email me andrewjwestlund@gmail.com
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