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is the ratio volume or #?
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Ratio
I use a standard ratio of six vermiculite to one Portland by volume. It's not a critical mix, but it's good to get close. Do it by shovelfuls, pails, what have you.
Jim"Made are tools, and born are hands"--William Blake, 1757-1827 -
Re: ? on ratio of vermiculite to cement
Ratios by volume!!Comment
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Re: ? on ratio of vermiculite to cement
I did 8:1 under the dome, probably could've done 10:1 really, definitely by volume.Time flies like an arrow; Fruit Flies like a banana.
My oven (thus far): http://www.tinyurl.com/ogorirsovenComment
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Re: ? on ratio of vermiculite to cement
Under the floor you need the strength. Should be around 5:1. Over the dome go as lean as you dare. I use 10:1Kindled with zeal and fired with passion.Comment
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