This will allow you to create a corner bracket where 3 V-Slot extrusions meet. The extrusions are completely surrounded in the corner, making the corner incredibly rigid.
Thanks to Carl Feniak for the V-Slot indention specifications used on the C-Bot
Before You Print
I suggest printing a test piece (testPiece=true in the settings) before printing an entire bracket in order to make sure that the tolerance is right on your printer. You want a snug fit, so it should take some force to get the extrusions to fit, but not so much force that you scrape up the bracket getting the extrusions in.
Notes on Parameters
xExtrusionWidthSections, xExtrusionDepthSections, yExtrusionWidthSections, yExtrusionDepthSections, zExtrusionWidthSections, zExtrusionDepthSections are your V-Slot profile dimensions. So for instance if the vertical extrusion was 2040, you would use zExtrusionWidthSections = 1 and zExtrusionDepthSections = 2 (or vice versa if you want to reorient the vertical extrusion relative to the others).
xExtrusionLength, yExtrusionLength, and zExtrusionLength are the lengths of the edges starting at the beginning of extrusions along the X, Y, and Z axes respectively.
Depending on your parameters, you may be able to rotate to print without supports.