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[Cob] cob sinkTaylor Publishing-DirtCheapBuilder tms at northcoast.comMon Nov 17 17:06:34 CST 2003
OH.....I forgot to mention on the cob bathtub subject that making a lime-clay mix CAN produce a very durable waterproof basin. I made a paper- clay- lime bird bath bowl 3 years ago, and it holds water all winter, and has not seriously eroded. it has no sealer or protection, and sits in the garden all year. I was shocked at how well it stood up, and will leave it there until it finally fails. It was a high lime mix with just a little sand, shredded office paper, and high content sticky local clay. As most of you know lime and clay can make a Roman cement, the clay acts as a pozzolan to bind with the lime to make a natural cement. on the bathtub idea, hydraulic lime is ALL imported into the US now, and if it is used as a tub inner plaster it should be polished to keep it as smooth as possible. I have samples of this lime from the Transmineral rep. and sitting on a rough texture in a tub will not feel good. It can be made very smooth, but on bare skin you will still want a rubber mat to sit on I think. and lastly, on some of my fibercrete recipes I use a lighterweight paper-sawdust "core" to make a bowl, and cob-lime coating OVER it, to keep weight down of the finished piece. this could be true for a tub or basin also. Ms. Charmaine Taylor/ Taylor Publishing PO Box 375, Cutten CA 95534 707-441-1632 books at dirtcheapbuilder.com http://www.dirtcheapbuilder.com http://www.papercrete.com
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