20 Series T-Slot Aluminium Extrusion Profile

My question is - why use expensive extruded aluminum T-slot? I mean, for a CNC router it makes sense because you need sub-millimeter

T-slot modular framing systems are ideal for building structures like workstations, shelves, machine guards and more They are quick and easy to assemble

aluminum slot wheels Buy 6060 T Slot Heavy Aluminium Extrusion online in India on Find retail and b2bwholesale price, dimensions and technical

aluminum t slot extrusions I used aluminium extrusion 2020 for the robot frame that I designed together with Basti Kuhz