OpenSCAD MK5 Baseplate & Dual Mount

I needed this hole pattern for a dual-extruder mount: http://www.thingiverse.com/thing:6632

I couldn't just extrude the original .DXF in OpenSCAD, so I sat down and took precise measurements and created my own replica instead.

Completely parametric, if you need to adjust any of the dimensions yourself, but this does include a perfect set of dimensions and boltholes, which I'll be applying to the MK5 Wade's-style tensioner shortly.

Marked WIP because it's the official home of the Dual-