Alum can be bought in the spice dept of your local grocery store, or ordered online in bulk. The spicy version would be pretty expensive. It is actually aluminum sulfate when you go looking for it in bulk.
There is a source mentioned on the Battery Conversion yahoo list, so if anyone is interested I can forward that information.
From the description and what I know about aluminum and cement, this should set up pretty fast so the recipe with five gallons of water would be more suitable for several people working together, to get it on before it sets.
spaceman All opinions expressed or implied are subject to change without notice upon receipt of new information. http://Starship-Enterprises.Net
On 11/30/2010 9:57 AM, Tom Hay wrote:
Here's the conversion. (not exact but close enough - e.g. 1 pound = 453.59237 grams so 900 g = 1.984 lbs )
original metric to make an equal amount 5 gallons water to make 3.8 times as much 1.32 gal 5 gallons > 5.5kg cement 12 lbs 2 oz 45.9 lbs > 900g lime 2 lbs 7.6 lbs > 450g salt 1 lb 3.8 lbs > 225g alum 1/2 lb 1.9 lbs
Tom Hay, Ph.D.
A2B Research and Development, LLC
703/672-6033 (internet phone)
tomhay@verizon.net
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