Universal 4020 aluminiumprofile connector (Creality CR-10)

I designed this aluminium profile connector to modify my Creality CR-10. I will use it to construct a box under the printer to fit all the electronic components.
I'm gonna upload it when done.

But this part can be used to connect every 40x20mm aluminium profile as shown on the pictures.

Use M5 10mm screws and M5 T-Nuts

UPDATE:
Version 1.1 - Minor changes - larger holes for easier screw fitting, larger text
Version 1.2 - Holes for screw head are more shallow now - better fitting for