IN-12 Nixie socket

printable low profile socket for IN-12 tubes. socket pins came from some DB25 d-sub connectors I picked up on amazon, others may work. its a snug fit, I drilled the outer holes to 1.1mm to clear any blobs, slot the tube into the socket, then partially seat the pins in the back. Heat from a soldering iron seats the pins the rest of the way, and locks them in. The tube helps make sure they go in straight.