I did a set of oil lines for dacs, with Nickel.
They came out pretty well, but I found the steel to be quite soft on the bent tubes and easy to dig in with the polishing mop. The brass ferrules polished and came up a treat.
I tied them both into U shapes with wire and did both ends at the same time by dangling them in the electrolyte just up to the braid.
One end went quite badly the first time. It stained black and all the plating peeled off like shelling a peanut, but I pepped up the acid pickle and it went well second time around.
Time will tell how durable Nickel is in that exposed position.
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