An exceedingly generous Uruguayan guy gave me step-by-step instructions on how to do it, as he does it all the time for exactly the same reason - to end his reliance on Ferro Frits.
His instructions were to slowly take the colemanite up to 680C and hold it there until the heat coming out of the top hole in the kiln stops steaming up a glass or mirror.
I followed his instructions, but was interested to see if the colemanite gave off its water at the temp #AI suggested.
Madeleine Morris
npub15t…808hr
2026-09-29 11:05:20 UTC
in reply to nevent1q…875f
Author Public Key
npub15t7s8f6jvn93phgptma8vep4kxcck8ud3zekq2ceq73tv7y7at8q4808hrSeen on
wss://relay.momostr.pinkPublished at
2026-09-29 11:05:20 UTCEvent JSON
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