This story has been on the news here lately. I'm glad they were not seriously hurt. Was humorous to me much of the coverage made a big deal of the fact they got the instructions off the internet. I remember my brother making one in the 80's, well before the internet. Can't remember now but he had something rigged so it was not possible to inhale the darts, which were also homemade. http://news.yahoo.com/boy-inhales-blowgun-dart-112932844.html
Ha ha, We made mini ones with straws and toothpicks. My brother did the same thing, inhaled instead. Tooth pick was stuck in his throat After our mother had retrieved it, I told him he "sucked"
We made them with plastic Meccano and shoe lace darts. They were so much fun I taught my son them. Just blow, dimwits!!
We made them pins, paper cones, superglue and a piece of copper pipe. They were awesome! As Bill Clinton said: We never inhaled. What would Darwin say about inhalers?
I used to have a blowgun as a kid and I kept my mouth pressed against the gun and inhaled through my nose to build up air in my lungs. I think Darwin would have a thing or two to say about inhalers.