Foamed fly ash doesn't need "3d printing." Of course you don't get news stories written about your project if you say "I'm doing Sprayed Foam Insulation with a

Foamed fly ash doesn't need "3d printing." Of course you don't get news stories written about your project if you say "I'm doing Sprayed Foam Insulation with a slightly different foam formula" https://www.owenscorning.com/en-us/insulation/residential/spray-foam https://www.owenscorning.com/en-us/insulation/residential/sp...