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NY bill would require a criminal history background check for the purchase of a 3D printer
(www.nysenate.gov)
This is a most excellent place for technology news and articles.
It's not about changing the gun nuts' minds, like you said, it's not going to happen, but there's a whole lot of people out there without strong feelings one way or another, who don't know about what laws are out there, and who are potentially open to being persuaded to your way of thinking, and if you want to convince them of your position, you don't want to give your opposition an easy opportunity to derail the conversation and make it look like you don't know what you're talking about and they do.
Fine. I'll never call it a gun show loophole again. Anything to stop this tedious discussion of semantics for a situation I've never found myself in.