BeagleBone Black and Replicape Box

This box for BeagleBone Black and Replicape is a bit taller to accommodate an extra stacking header between the BBB and the Replicape.

Unique(?) features include:
* Mount point for a 50mm blower, aimed to blow air between the BBB and Replicape to cool off any installed heat sinks for the stepper drivers. The mount was lifted from the extruder mount for the [Hypercube Evolution][1].
* Cut-out to allow a MicroSD extender to exit the case
* Cut-out to allow a 90 degree USB host extender to exit the case
* Mounting holes for the BeagleBone are sized for threaded brass inserts to be glued into place.

This is still a work in progress, though I do hope I'm nearly finished.

The V2 file incorporates a mount location for an USB panel-mount receptacle instead of the huge slot. [Digi-Key part #MUSB-A511-00-ND][2].

The V3 file removes the threaded inserts, replacing them with press fit nuts on the bottom. I found that I liked this solution better than the threaded inserts.

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