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Oat and Grain Dehuller
REHULLER AND SEED SCARIFIER Designed for hulling and scarifying seed, such as Sweet Clover, Alfalfa, Timothy, etc. It is a very fast working machine, combining simplicity of operation with efficiency and durability. It also does excellent work hulling oats. Its capacity is up to 100 bushels per hour on average run of Sweet Clover Seed. It can be used for breaking dirt or clay lumps so that the dust can be removed by screens.

Mobile Wash Station
Low-cost DIY, mobile wash station for increasing efficiency in post-harvest processing. Needs exterior hose or spigot to use. The partnership was Elise McMahon, Liam Turkle, Fay Strongin and Tess Brown-Lavoie (both from Sidewalk Ends Farm in Providence, RI). We started working on it at FarmHack RISD and then finished it on 12 May in Providence.

DIY Farm/Bike Trailer
A bulletproof, versatile, inexpensive bike trailer. For $20.

Mobile Distillery
A mobile distillery, spirit-making equipment direct to farm and forest.

Refrigerated Box Truck
This is a home made reefer truck made from an old Uhaul diesel Ford f350. Utilizing a 10,000 BTU commercial reefer unit and spray foam insulation, this truck can keep produce at 40 degrees even on hot arugula-wilting summer days.
Manual Seed Cleaning Box
This tool was built to solve a basic sifting/screening problem in a simple manual way, but with decent capacity. It is designed to use readily available parts and to be stackable if you want to screen in stages.
Outside Air Exchange Control
This tool demonstrates the use of two thermostats to provide a control system for an air exchange fan that draws cold outside air in to cool a storage room for winter crops. The control essentially provides a differential temperature control which may also be applicable to other processes (curing, solar hot water, etc.)

Low cost pedalpower rootwasher
Low cost root washer that can be pedal powered. It should be easily constructed on-farm. This is suitable for carrots, potatoes, etc. Can handle how many pounds/bushles per hour? This rootwasher was demonstrated at red planet vegetables 3/10/2012:
Small Doser for Small Batch Produce Washing with Sanitizer
This is a simple solution for measuring out up to 300 mL (10 fl. oz.) of liquid sanitizer such as Sanidate, Tsunami or Bleach to prepare wash solutions with water that address pathogen risk on fresh produce.
small scale egg washing
A summary of exisiting egg washing technologies and some discussion of merits/goals of small scale egg washing, hopefully some designs and prototypes to follow...