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by PeterisP 3934 days ago
Actually, 3d printer is a tool that's currently cheaper and more widely available than milling machines - the whole point of this is "hey, of course anyone with access to CNC or the skill to operate a manual milling machine could do it, but that's only a small niche, but now every idiot with access to a 3d printer can do it".

People and shops that are below the range of a moderately equipped machine shop can do 3d printing; a 3d printer that can make such a key from hard plastic costs less as a cheap manual milling machine that can make a similar key from metal and requires less skill to operate.