Cutaway, Hollow Elements

A collection of pieces for building polyhedral shells. Derived from http://www.thingiverse.com/thing:5961.
The original pieces took a while to print. This version reduces plastic, and therefore print time. I've been using these pieces to print out lamp-shades ( with http://www.thingiverse.com/thing:7857 ). The thinner pieces might be a bit better for diffusing light.
The .scad file can be modified to produce different polygons, different sizes of hinge, and different depths of cutaway.
models.zip contains several pieces :
-- octagon, hexagon, pentagon, square, triangle
-- hollow and cutaway
-- a range of hinge sizes depending on shape size to adjust hinge strength
The good :
-- less plastic
-- faster prints
-- symmetric hinges
-- range of hinge sizes to balance strength and ease of assembly
-- fun with glow-in-the-dark ABS : https://lh6.googleusercontent.com/_KLnvj61OxTo/Tbh6JxKqlkI/AAAAAAAACqc/RJWNnHgdTYo/DSCF2997.gif
The bad :
-- fragile hinges ( depending on printer calibration )
-- overly tight hinges ( depending on printer calibration )
-- large force required to assemble larger hinges