Some 3D printing businesses are being asked to make guns, with owners worried criminals won’t take no for an answer

Melbourne-based 3D printer Kris Paxton was driving a company-branded vehicle when he was approached by a stranger asking about guns.

“There was one night when I was picking up my dinner and a car pulled up beside me and a dodgy looking guy came out and asked me about 3D-printed guns,” Mr Paxton…