I believe I have found my error, I used some new sheet aluminium (believed to be 2018 alloy).
I took the plastic cover off and used it right off (as i dont have any anodize stripper just yet

I tried another larger sheet I had, and it flows nicely (1amp).......first attempt! and i have made the first mistake!

Must get myself some oxide/anoidse stripper and propperly prep the part!
I *hope* that was my error anyway!
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