Spool Guards

Update: If you mount your spools horizontally on top, I'd recommend using this filament guide instead of using spool guards: http://www.thingiverse.com/thing:9604

These are OpenSCAD Parametric MakerBot Filament Spool Housings. I always found Pax's excellent Spool Housings to be very difficult to print and kept thinking if only it were a little thicker so they don't delaminate or a slightly different shape, it could be even better, unfortunately I don't have Solidworks... so after having a fe