It's been said, and I'll echo it...

Making guns from machines in your garage is about 100 years old. At the moment 3D printers aren't even the best method of doing it.
The whole argument and chatter about this is so ridiculous that it makes me mad to even think about it... I guess it just shows the naivety of our politicians thinking that 3d printers have some magical method of producing weapons that lathes, mills, or Bunnings does not have. So dumb.