Don't feel too bad for the metal :-) The shavings and slugs are recycled to make more billets of aluminum for the next guy
If you want to feel sorry for metal, when I worked at Pratt & Whitney they used explosive forming to bend nickel alloys into the shapes they wanted. Milling is gentle by comparison.
Nice work btw!
They are ill discoverers that think there is no land, when they can see nothing but sea.
-Francis Bacon
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