I Tech
PO Box 413, Veneta, OR 97487, USA

Appropriate Technology for Small and Subsistence Farms
Designs for making your own farm tools etc.
All I Tech designs are public domain, a gift to humanity.

This site is home to I Tech designs from 2005 to present.
For I Tech designs from 1989 to 2005, go to the University of California at Davis site at www.plantsciences.ucdavis.edu/LTRAS/itech/ 
List of publications [publications]
   

Designs	Open .html	Open .pdf
Skylight Insulation 3 ways to increase the insulation of skylights (57 kb, 6/2005)	.html	.pdf
Farm Scale Winnower make a seed cleaner that uses air flow to separate seeds from chaff  (209 kb, 12/2005)	.html	.pdf
Flex-tine Cultivator convert a spike tooth harrow to a tine cultivator, mechanical weeder (313 kb, 1/2007)	.html	.pdf
Mouse guard a non climb barrier strip against mice using oil coated aluminum foil tape (89 kb, 3/2007b)	.html	.pdf
Solar tunnel food dryer 4 ft x 8 to 16 ft  solar food dryer, adapted from the Hohenheim solar tunnel food dryer design.  Includes notes on optimizing the dryer using the Penman-Monteith evapotranspiration equation (3/2008).  Added introduction, (610 kb, 8/2008)	.html	.pdf