How to join T-Slot extruded aluminium profiles

I used aluminium extrusion 2020 for the robot frame that I designed together with Basti Kuhz

T-Slot, 8020, Aluminum vs Steel, Framing Systems, Aluminum Extrusion, Aluminum Profiles, Benefits of Aluminum vs Steel, 8020 T-Slotted Profiles

aluminum extrusion tslot T-slotted modular aluminum framing for a wide variety of applications including machine guards & modular enclosures >

aluminum extrusions tslot Aluminum Extrusions, known as T-slot framing rails or profiles, offer a modular and flexible solution for various industrial applications Built for versatility