The latest Oh My Gawd and Gee Whiz! panic -- the plastic gun from your 3D printer -- is this year's version of Y2K when the zombies leaped from your computer and chewed up your brains.
The hand wringers hope above hope that no one will Bing "zip gun" and notice the 63,700,000 references. Piece of pipe, Gorilla tape, couple of springs (rubber bands can work), hunk of steel, nail. If you want to get fancy you can add a handful of machine screws and a tap and die set from Home Depot.
Look, I'm only a tinkerer, but if I can't make a better pistol out of stuff found in half the home workshops of America, I'll kiss your Cloraxed arse on the front porch of 505 27th Street in Ogden, Utah, and let you hire the Tabernacle Choir for a warm-up act.