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.

 I Tech designs from 2005 to present.
 I Tech designs from 1989 to 2005 is located at the University of California, Davis  www.plantsciences.ucdavis.edu/LTRAS/itech/ 
   
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, revised (3/2009, 560 kb) with simplified supplemental notes and corrected wind speed error.  Added introduction, 08/2008; original verion 3/2008. 		    .html     .pdf
Three solutions to the tight credit market in US
Option 1. Create a banking system for federal, state and local government.  Option 2. Reform the Federal Reserve System using Stephen Zarlenga's plan.  Option 3. A hybrid between option 1 and 2.   (18 kb, 2/2009)		    .html    .pdf