But monitoring whether people make their own guns on a 3-D printer is going to be impossible, barring sticking an A.T.F. agent in every home. It's also hopeless to try to build a technology into these printers that prevents people from printing a gun. One project mentioned in Mr. Wilson's video, called the RepRap printer, will be capable of replicating itself by printing other 3-D printers.
After committing a crime with a printed weapon, a person could simply melt down the plastic and reprint it as something as mundane as a statue of Buddha. And guns made of plastic might not be spotted by metal detectors in airports, courthouses or other government facilities.
"This becomes scary when you consider the fact that it could be yet another opportunity for people to evade background checks and get a gun," said Daniel Gross, president of the Brady Campaign to Prevent Gun Violence and the Brady Center to Prevent Gun Violence.
|Mod your apartment door|
|To Win Over Users, Gadgets Have to Be Touchable (RT @SaraCera)|
|10 Weird Forms of Human Transportation|
|Microsoft cites Linux as rival in official document|
|The Pneumatic Hybrid Engine|
|“For the first time in the world, AI will run in an election.”|
|“Is curing patients a sustainable business model?”|
|“Never let a good crisis go to waste.”|
|Japanese Robot Serves Ice Cream From Inside a Vending Machine|
|The (Very Scary) People of Public Transit|
|CaptchaTweet: Write Tweets in Captcha Form|
|How to Avoid Jury Duty|
|Humans Need Not Apply|
|When the Wrong Hastag Can Get You Killed by an Assassination Drone|
|Why, Typewriters Are Alive and Well, Thank you|
|Amateur-Built Electric Car Going After Record Set by Tesla|