AnyBeam/AnyPanel is an OpenSCAD library for creating LEGO compatible studless beams using a declarative syntax to represent holes and connections. It is especially useful to create beams that are not produced by The LEGO Group. This is not a LEGO Group product nor is it endorsed by them. 
NOTE - This library requires OpenSCAD version 2013.06 or higher. 
Examples 
A flat panel size 5x11. 
anypanel( 5, 11 ) 
A beam with axle holes, pin holes, two bends and a long slot around a bend. 
anybeam( 
[ "XOOO", [ 4, 1, 53.13 ], 
"OOO()", [ 5, 1, -53.13 ], 
"(-)X" ] 
); 
A size 4 x 6 frame with axle holes in the corners. 
anybeam( 
[ "XOOX", [ 4, 1, 90 ], 
"XOOOOX", [ 6, 1, 90 ], 
"XOOX", [ 4, 1, 90 ], 
"XOOOOX" ] 
); 
The "height" of the beam is specified in beam height units where 1 unit is the height of a standard beam with it's holes facing up. 
Here is how to create a 1/3 height beam: 
anybeam( [ "XOOX"], 1/3 ); 
Or a double height beam: 
anybeam( [ "XOOX"], 2 ); 
Contributing 
This project it hosted on GitHub athttps://github.com/digitalbytes/Things/tree/master/LEGO