So if you have the appropriate machines you can actually make an instrument that can kill someone? Wow, I'm glad that that wasn't possible in the old days!
I don't really get what all the fuss is about - if someone wants to harm/kill people, they'll be able to do it, be it with a kitchen knife, DIY pipe bomb, bought or printed gun, sharpened toothbrush or a hammer. It's just another scare report made to create an artificial hype/craze by the media.
Either way, the company got good free advertising, and good for them. I'm not really concerned.