Homemade refractory cement in a bucket based on these plans. The outside of the bucket remained at 75F while the inside cooked at over 1200F for about an hour. Two aluminum beverage cans yielded a lot of dross and little molten aluminum. Still fun. We’ll do it again with more coal and cans.
Bonus fail: We had a PVC extension tube hooked up, but I forgot to turn down the temp on the heat gun. Heat guns are great for bending PVC, which is fun when intentional. 🙂
Published by Ryan Boren
Howdy. I’m Ryan Boren (he/they) with Stimpunks Foundation, a nonprofit by and for neurodivergent, disabled, and queer people. I’m a retired tech worker turned wannabe sociologist.
CV: I helped start WordPress.org, WordPress.com, WordCamp.org, and Automattic.com, among the first fully distributed organizations.
About: queer, vegetarian, autistic, bipolar, hyperlexic, power wheelchair user, neuromuscular disease
Location: Dripping Springs, Texas, USA, named after the springs at the Milk House Branch of the Edwards Aquifer, a gathering place for the Tonkawa people, who were here before us. We’re a little west of Austin in Texas Hill Country.
Current SpIns: pens and paper, everyday carry/coping, punk rock, queercore, Ezra Furman, The Linda Lindas, food anime, Thai fisherman pants, Tokyo street fashion, solarpunk, solar energy, heat pumps, electrification, library economies, third places, epistemic injustice, scrollytelling
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Irie Smial Preserve 
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