Printed UsbTiny ISP enclosure with Hexagonal lattice

thingiverse

This redesign was inspired by http://www.thingiverse.com/thing:448, where I discovered fdavies' Hexagonal lattice pattern (http://www.thingiverse.com/thing:10566). The effect is quite appealing. For OpenScad newbies, the scad files demonstrate essential techniques like dxf import and extrusion, stl import, and object subtraction. However, in earlier uncalibrated printing days, the box was slightly too large; you could reduce its height by 5-6 mm between the base and cover, and 1 mm sideways. Customizing the lattice pattern's margin is also up to the user. In Skeinforge, setting Fill to zero extra shells ensures solid infill between outer and inner side walls.