nostr:npub1fgml4kcpwj2wfnyxx5zss95up9adrkjsgtrx27e50mhwh8d45n4s3f8m7d nostr:npub106dam65ww9ztdqj26xvh08dyuc7lj7nmkrtrujwsmyq2n6g3r33saq3m89 im assuming theres a proper tool to do it like a temperature controlled furnace where you can specify the cooling rate. i wonder what blacksmiths use