Is there a point when it goes too far? Talking about the physical world not the cyber world here. Theoretically you could 3D print the parts for an Untraceable Ghost Aircraft Carrier(s) with a very high end 3D printer. If you had a $1,000,000+ (metal) 3D printer or in the next 10-15 (if not in 25 years) years alone 3D printing all the parts for an Untraceable Ghost Aircraft Carrier. Somewhat joking obviously, but at the same time pushing the high end for what you could create yourself and/or modify for that matter yourself here and being serious at the same time. Edit I should mention this though to as well. Someone 3D prints (metal) parts for a very large ship that looks similar to an Aircraft Carrier. It's not called an Untraceable Ghost Aircraft Carrier or even an Aircraft Carrier, but maybe it looks similar or it does look similar if not very close to how an Aircraft Carrier looks. It doesn't have the guns / weapons and such after it's 3D printed (maybe sold - again joking somewhat, but serious for now at least - then it's later modified to have guns / weapons and such). I say this because this is how people scapegoat laws on certain things already and have done so for years on different stuff. Video games at least for now you can do it just fine and/or mod something like an Aircraft Carrier in just fine. No problems really for the most part, but with non-cyber physical world type 3D metal printing it becomes a very serious problem at some point alone to me personally or just using a metal 3D printer to mod / modify a commercial ship in the physical world to have 3D printed untraceable ghost weapons on it and such. I'm being serious to as 3D printing in the metal realm appears like it's going to present and/or pose serious problems if not very serious problems within the next 10-25 years alone. Metal 3D printing is going to bring very serious questions on what you can and/or can't 3D print yourself is what I figure personally. If it's not general untraceable ghost guns what about 3D printing (metal) Untraceable Ghost RPGs if not Grenade Launchers for that matter? I've seen metal 3D printers go for $10,000 to $25,000 or so as well and that's probably pretty decent quality at least (guessing somewhat though to). Maybe not high end professional quality, but given how fast tech can move a $500,000 3D metal printer now might be $999 - $2,999 in 20 years. Giving people the ability alone to print high end / high quality metal parts for untraceable ghost RPGs and Grenade Launchers. Modding / Modifying your very own untraceable ghost items and such. If not creating them / 3D printing them to as well. What do the people of Poal think? Where do you draw the line personally yourself?