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Improvised Gas Mask

Step 10Crush Some Charcoal

Crush Some Charcoal
After quenching the coals I set them on some cardboard to drain and dry out a little. Then I dumped the water out of the pot and used it for a mortar to crush the charcoal in. I used a section of bamboo as a pestle.
Quenching had drawn a lot of water into the charcoal. It turned to wet paste as I crushed it. I mashed it til the largest grains were well under .25" in diameter. The volume decreased a lot as I crushed it. This husk charcoal wasn't very dense. I needed to grind a few batches to get enough to fill my canister.
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1 comment
Dec 18, 2008. 5:10 PMcrickle321 says:
I enjoy your DIY mortar and pestle. The native touch fits perfectly.

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Author:TimAnderson
Tim Anderson is the author of the "Heirloom Technology" column in Make Magazine. He is co-founder of www.zcorp.com, manufacturers of "3D Printer" output devices. His detailed drawings of traditional ...
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