RCM Jig with Internal Wire - M600 Pause Needed

### This is a remix of the excellent [RCM jig by Sulya](https://www.thingiverse.com/thing:2973594). See his model for instructions.

By far, the hardest part of making Sulya's jig was inserting the copper ethernet wire through the holes, so I gave up and just paused my print at 1.6mm and put the wire in before the print finished. This worked so well that I decided to remix the model and close up the back so the wire was a permanent fixture of the piece and could never be pulled or fall out.

There are two versions: the one with the squared back will support a wire bent using Sulya's bending template and the rounded one (my preference) makes it exceedingly easy to place the wire in the slot and trim to length afterwards.

NOTE: you absolutely must put a M600 after the layer at 1.6mm finishes, or you need to watch the print and pause near the end of the layer at 1.6mm (in case your printer doesn't support M600 for whatever reason). Place the wire in the slot and make sure nothin