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Cob: web info on Cob Mixer or press? Aka: Cinva RamCharmaine R Taylor tms at northcoast.comFri Mar 22 20:04:21 CST 2002
Hi Kenn you are describing a CInva Ram compressed brick maker, made popular in the 1950s, invented in Bogota Columbia. There are manual machines for sale into he US on a limited basis, most cost $650 to $2500+- However German Builder Frank Andresen created a "squeeze" box of wood, with flip up handles that has a clay-straw-or sawdust/chhips loaf pressed, then released one brick at a time- very cool and very low tech. I made a similar brick maker myself, and tested several recipes of cob like mixes some with lime-clay- all with fiber of some sort. Basically if you can weld together any metal with holes ( for a wetter mix to drain through as you suggest) and then place and press- you still have the problem of REMOVAL of the press- the papercrete folks originally shoveled papercrete ( a cement- sand-dirt-paper mix ) into old cloth sacks, laid between boards on the ground to square shape them, tamped lightly, and left to dry by themselves for a few days, then peeled OFF the sack, and continued to dry--this is less labor of course No compression is needed for cob, so you could save work by not using (essentially) an adobe brick maker. For cold climates the advantage is making bricks all winter to dry them in the basement, garage, etc... My block maker was 2pieces 14" long, 2 8" wide of 2x6" redwood boards nailed together, with a heavy wood block 8"X14", 8" tall that fit the inner dimension of the form. Two more wood bits supported the blocke frame edge while I tamped in the brick, removed the wood supports and pushed DOWN the form thus exposing the brick on top the big block. Carefully remove the fresh brick, and set to dry somewhere. in the end this is too much labor- slip form pouring a wetter mix into cardboard boxes sitting on a drain screen is much faster, and they can dry on their own, and the cardboard box is recycleable. Charmaine Taylor/ Taylor Publishing http://www.dirtcheapbuilder.com http://www.papercrete.com PO Box 375, Cutten CA 95534 707-441-1632 here are some web links that show CInva Block presses Cinva Ram: A CEB press made from these plans is now offered by Warren Fernsler at 505-354-7102 (toll free 877-369-1699) at Fernco Metal, price is $650. plus S&H, makes a 4"x6"x8" block, online information at the website: http://ferncometal.stormloader.com/ Mike Gross of Terra Block in Orlando, FL offers an automated brick-a-minute machine, and larger production brick makers. 407-325-2738, www.terra-block.com The Mississippi State School of Architecture bought my CInva Ram planset in Feb 2000, and conducted a class to build one. See lots of photos and excellent test brick performance data online at: http://www.sarc.msstate.edu/gore/cinvablocks/cinva.html Cinva Ram type machine: http://www.geocities.com/abonaccorsom/Vene-Ram.html BASIN site with good Cinva Ram information: http://www.gtz.de/basin/gate/interlocking.htm Earth as a Building Material-13 pages, good info http://www.fao.org/inpho/vlibrary/s1250e/S1250E06.htm Compressed Earth Block Article-well done http://www.carpetarea.com/designscapes/apr1_2001/spotlight3.asp Packer Presser in Belen, NM also produces a block press for $1500.
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