MPCNC Mounts for Endurance Laser

This contains a 3d model of the 8.5w laser I got from [Endurance Lasers](http://endurancelasers.com/diode-lasers/8-5w-plus-endurance-laser/), as well as 2 mount options to attach it to the [MPCNC](https://www.thingiverse.com/thing:724999).

The model isn't perfect, but all the dimensions are accurate enough.

The laser attaches with 4 M3x12mm screws.

Mount option A keeps the laser above the bottom of the carriage, so the laser can`t possibly hit the workpiece even if it goes down too far.