Stunt Kite Connectors V.0.1
A friend of mine flies stunt kites and one of his endcap connectors broke. I decided to see if I could build one with my PrintrBot Simple. The inner diameter is 8.6 mm to fit on an 8mm rod.
This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/ewtKYMVYFgA