Posted by wunhuanglo [ 68.222.31.47 ] on August 06, 2005 at 14:27:45:
Seems that a lot of people advocate filling behind the horn with concrete, but does that ever add some weight.
If you want to take the curse off, try 8 parts vermiculite to 1 part portland - ends up about 20 pounds per cubic foot, vs about 150 pounds per cubic foot for conventional mix.
I've been thinking that I might try casting some large horns with it this fall (emphasis on "thinking")
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