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Share here when done please!
I did my first test cut (a dog collar tag) on some copper sheet and it turns out that I either have the wrong type of copper (annealed maybe?) and/or also the wrong type of end mill (upcut). The edges came out a bit torn up.
More copper and more end mills purchased. Because everybody loves expensive rabbit hole hobbies.
Stonehedge-
If (as a retired teacher of metalwork etc) I had to select metals for milling, copper would not be near the top of the list - even cnc milling the thin layer on printed circuit boards often tore the copper from the grp - a straight single flute engraving tool was about the only thing I'd let students use, with close supervision against the moment the tool got stuck and stalled the motor.
I'd be genuinely interested in the details if you get this to work! -
I saw this yesterday and thought if it folds without splitting it'd maybe work with a bit of hacksaw & file to shape. Picked one up so will give it a go when time/attention allows.
https://www.fredaldous.co.uk/products/copper-blank-cb96-100-mm-square
Possible useful tip for setting gap width, a 20p coin is the same thickness as the top of my no.7 blade.
MrE
rhb
Share here when done please!