Conifer?Conifer--COpper-NIckel-FERrrous (iron).. now I get it... Its surprising how many try refrigerant copper tubing. Just waving a yellow flag. Uncle
Ok so Cu = copper .. it's that guy Mendeleev's faultConifer?
Maybe spruce up the copper/nickel/iron alloy with a bit of timber? Sorry fir the comment - wife's away and I'm pining ...