OpenForge 2.0 Weldable Base

This is my spin on a customizable base for the wonderful [OpenForge 2.0](http://www.thingiverse.com/devonjones/collections/openforge-2-cut-stone-series) dungeon tiles from [devonjones](http://www.thingiverse.com/devonjones). While it's all my own code from scratch, it is heavily based on his [OpenForge 2.0 Cut Stone Magnetic Base](http://www.thingiverse.com/thing:1422058) with some of my own features.

Love the idea of the filament saver base, but always find slicers hate the thin walls if it