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I assume you are using a hardened steel nozzle. But still, I am wondering if the repeated friction between copper and steel would damage the steel also. A lot slower than a regular nozzle, but it’s like a thousand needle pricks as I understand it. How is your nozzle holding up?
Pretty well. It’s the Bambu hardened steel nozzle so it should be able to stand it.
The price is steep but it looks neat
It’s so smooth. Did you sand it!
Yes. Quite a bit. You need to expose the copper fill.
Link to filament?
Iron is pretty cool as well