UPDATE In order to use this as an "inside connector" simply set the Inside radius to "0". Set the Outside radius to whatever fits in your tube. No function change. Just further instructions in reply to something. This is a version of a multi-connector creator designed for use with Makerbot Customizer. Customizer will generate a connector for any number or rods at any angle (nearly) of any size with any thickness. This thing will continue to be added to and improved until the dead-line. I would like to give you individual arm parameters. UPDATE You now have individual placement of any angle for up to 30 arms!!! UPDATE I have now added a sample STL made with customizer to the downloads. UPDATE*** 2.1 now generates connectors for Triangle, Square, Pentagon, Hexagon, Octogon, Circle. The back edge of the join is a bit rough on most except the circle but I am constantly improving this thing.UPDATE*** I have added a heel to clean-up the back of the join.Quick Start Guide:Open this thing in Customizer by clicking the “Open with Customizer” button beneath the photo. Set each arm you want with the correct angle. Set any other arms angle to "0" and it will not show at all. you should be able to make about any connector you want to join rods, straws, PVC or whatever.Remember that X,Y and Z planes interact with each other causing some interesting placements you may or may not want. Sometimes you just need to add another arm at the right place. x2angle and x3 angle perhaps.Play around with the parameters and you should be able to easily get any connector you want. Let me know if you find any problems.This is my entry to the Customizer Challenge. Your download counts.