Prusacaster Metal Rods

I wanted to add a bit more strength to the core of the Prusacaster.  I modeled in slots for some 8 mm x 300 mm metal rods.  (I ordered some off of Amazon).

I've test printed a piece of the model to confirm the rods fit well.

I've also included the GCODE with custom supports generated in 2.6 Alpha 4 

*Update - I made the holes slightly bigger (8.2 v1 → 8.3 v2).  I was able to get the rods in with v1 and will be using that one in my guitar, but figured others might want a slightly easier fit.