Cobbing has begun at Workshop 3!  A common definition for Cob, the material, “is a combination of  sand and clay, both of which can be found in many soils, with straw and water added”* . . . we use the dirt found here on our site, which is 2/3clay and 1/3 sand, and mix in dry pine needles and water as needed. Miscellaneous trash, trash-filled plastic bottles or empty soda cans are wedged in the space between the tires to fill up the void. Screws are screwed into the tires to give the cob something to grab on to.  The dirt floor of the workshop is dug up and then large piles of cob mixed in the middle of the room. When the mixture is ready the fun begins – volunteers and workers hurl handfuls of cob at the tire wall, Whap! The cob is thrown onto the wall to ensure it adheres properly.  The first round of cob fills in the spaces between the tires, and is allowed to dry for about a week before the next layer is applied that will make a flat wall surface.  Electrical conduit and wiring is also attached to the walls after either the first or second layer of cob.  The cob is used to cover the tire wall and make a flat surface for applying the lime based stucco finish.

*Alternative Construction: Contemporary Natural Building Methods, edited by Lynne Elizabeth and Cassandra Adams. 2000 John Wiley&Sons, Inc.

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