#video on trying and failing to make #carborundum #materials in the shed in a zirconia crucible; the Australian YouTuber ran into trouble with #export-controls in #China being perhaps incorrectly applied to YSZ. So he used calcia-stabilized zirconia. But an induction furnace is the wrong tool.
on 02026-04-06holy shit Osvaldo F. Martin even has #carborundum #refractories
on 02021-12-21