Configurable OpenSCAD Square Tubing Connector Generator

This is mostly a remix of http://www.thingiverse.com/thing:14061. I just streamlined the SCAD code a bit, and added options for all possible orthogonal permutations (up to 6 tubes per connector). Should be easily scalable, though I've only tested it on 1" aluminum tubing. Comes with a test finger option, so you can dial in your desired fit without wasting a lot of time and plastic.

I will post links to things made with this SCAD file soon.

WARNING: FOR LIGHT DUTY ONLY!
The obvious use is for storage racks/shelving, but use some common sense with your load and application. The fingers will shear off if you overload them. Don't go building scaffolding or bookshelves with them.

For photos of an actual thing built with these connectors, see http://www.thingiverse.com/thing:1103635