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California’s 3D Printer Law Would Criminalize Open Source, Enshittify The 3D Printing Space
(www.techdirt.com)
This is a most excellent place for technology news and articles.
There are 3d metal printers that do stainless, inconel, H13, D2. They are expensive but that price will come down over time
True, but to design a barrel for a gun is way more difficult. Even now you can have a barrel made from a metal shop (or with a relatively cheap cnc mill) if you really want.