#video about #bootstrapping pure #materials from fertilizers. Like calcium nitrate from the hydrated double salt with ammonia. (Boiling with slaked lime drives out the ammonia as gas.) Urea he simply recrystallizes with water. Ammonium sulfate he recrystallizes with water by evaporation, which is tedious because you can’t crystallize it by cooling. By #Apoptosis. #scouting
on 02024-10-30#video about #bootstrapping silicone #materials from 40mℓ of sodium silicate (modulus and concentration unspecified but it looks syrupy) and 10mℓ of 95% ethanol, which he claims ethylates the silicate chains. Then he squeezes the water out of it. The resulting silicone is super bouncy, much more rigid than polydimethylsiloxane. Very impressive. By #Apoptosis.
on 02024-07-10