Hello nostr:npub1kemda478drtx5at65wt8kyjrmy9l27hmp8gsgnfjr8vdgf8y46sqsw0hnv thank you for this video packed with very valuable information. I really appreciate it 🙏🏼🫂
I have a question around minute 17:20 regarding the ratio of copper and zinc, what is your suggestion?…
