2020 Aluminum Extrusion Frame Corner Delta

A revised version of my 2020 Frame corner design. With this version each piece of extrusion is contacted by three screws in a triangular pattern, the same pattern for each piece, and the part has been shortened in height reducing contact on the vertical extrusion.
General Specs:

Print at 40% for Strength, PLA is fine
Layer height at 0.2mm for screw hole/countersink accuracy
M4 Metric Screws with 2mm Countersink
Channel slots for tight and square fit

Each Aluminum piece is contacted by three screws in a triangular patter for max rigidity

UPDATE 1/23/2020
This Part/this thing is now obsolete!!! Newly updated version of all these parts plus new ones at this new thing: https://www.thingiverse.com/thing:4117326 come check them out and print them, tell me what you think!