Date post: | 17-Jan-2015 |
Category: |
Self Improvement |
Upload: | edward-marshall |
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Cob Basics and Ballyhoo
The We Are All Farmers
Permaculture Institute
What is cob?
• Earth building, often with clay, straw, and sand
• Lots of cultures have a version of it: mud huts, adobe, etc.
cobcottage.com
http://www.sim.org.au/south-sudan-project
http://content.cdlib.org/ark:/13030/tf467nb57c/
What is so great about cob? • Permaculture perspective on cob: low cost, abundant,
community, lasts, DIY, can source locally, can replace and repair locally, can stack functions,
A little divergence: Other stuff like cob: Papercrete: http://www.papercrete.com/
And http://makepapercrete.com/
What brings you to cob? • Want to make our own bread/pizza, etc. outdoors
• Goal to make a rocket stove with cob “masonry” = = =
= much less expensive than a mason stove or Kachelofen
• And you???
ilovecob.com
Ceramicstoday.com
When We Gave it a Try
Lessons Learned by Us
Season matters Letting it dry Don’t light fire prematurely Want to try it again!!
Pointers
• Can get a soil test to know clay content • Try to get everyone using the same ratios
• You can try to use mixers, too, but feet work fine: http://www.youtube.com/watch?v=TmyHayp5qtg
• Very annoying music, but another concrete mixer at work: http://www.youtube.com/watch?v=5cHBpOviwvc
• “if you want to reduce/eliminate cracks, let the cob dry slowly & completely before firing. You can fire it up sooner, but know that you will likely have cracks. I also like to fire it up at least once prior to plastering.” : http://www.youtube.com/watch?v=SFuGzhPxofE
Resources Great video series on how to build a cob oven: http://www.youtube.com/user/sigikoko?feature=watch
How to build a rocket stove + cob: http://ilovecob.com/archive/tag/rocket-stove
• http://www.cobcottage.com/pics
• The Hand-Sculpted House: A Practical and Philosophical Guide to Building a Cob Cottage: The Real Goods Solar Living Book (Illustrated) by Ianto Evans (Author) , Michael G. Smith (Author) , Linda Smiley (Author) , Deanne Bednar
• Rocket Mass Heaters: Superefficient Woodstoves YOU Can Build by Ianto Evans (Author) , Leslie Jackson (Author)
• Build Your Own Earth Oven: A Low-Cost Wood-Fired Mud Oven, Simple Sourdough Bread, Perfect Loaves, 3rd Edition by Kiko Denzer (Author) , Hannah Field (Author)
• Water Storage: Tanks, Cisterns, Aquifers, and Ponds for Domestic Supply, Fire and Emergency Use--Includes How to Make Ferrocement Water Tanks [Paperback] Art Ludwig (Author)
• Cob Building Pictoral: http://www.youtube.com/watch?v=4Tu0lIRKMLI
• More ideas, inspirations and how to’s: http://www.youtube.com/watch?v=lk1kzP2QHpg
• Start with a clay model: http://www.youtube.com/watch?v=7slPrX1Vmk0
• A cob outhouse! http://www.youtube.com/watch?v=D4EEhi7T8A8
• Basic Cob Tutorial: http://www.youtube.com/watch?v=S_83Nsf0z1s
• A bit shaky video work, but you see a lot of cool stuff! http://www.youtube.com/watch?v=9XChnijYFBY
Troubleshooting Cob
http://www.inspection4.co.uk/wp-content/uploads/2012/10/cob_walls.pdf
http://www.cobcottage.com/questions
Testing cob construction for earthquake survival (more annoying music): http://www.youtube.com/watch?v=VJk_AFY4sgE
Appendix. Please get your own copy of Build Your Own Earth Oven: A Low-Cost Wood-Fired Mud Oven, Simple Sourdough Bread, Perfect Loaves, 3rd Edition by Kiko Denzer (Author) , Hannah Field (Author)