Polygon bases and frames

Hi!

This one is useful for creating polygonal bases and frames.
This kind of bases/frames are designed with a groove and extended corners for conecting or inerting 'panels'.

I've used for make some boxes but you can build covering for lamps, decoration,etc...

Looks great when combined with 'walls' generated with Subdivided surfaces(http://www.thingiverse.com/thing:1693518)

Also uploaded the STL files (and ZIP files with more STL's) with the figures used in pictures.
Have fun!