a 3 way corner bracket for 2020 aluminum extrusion —

Founded a 3 way corner bracket for 2020 aluminum extrusion models & stl files for printing
Aluminum Extrusion 4040
Rudy_J_Lindsey
Parametrised corner joint for frames
DuckDodgers21andhalfcenturary
Corner clamp
CaptainObvious
frame corner
Akronovation