Guide to DIY with T-Slot Aluminum

So one of the industrial plants I work in has scrapped a HUGE amount of aluminum T-slot extrusion and I have free reign over picking through

Industrial application for aluminium profile is aluminum Workstation, Trolleys, Racks, Fences etc Aluminium T slot Extrusion 45x45 size of the aluminium

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

extruded aluminum channel tslot S8-50*50 Aluminium Extrusion T-Slot Profile S8-5050 profile's slot is mm; it can be easily connected with 20 series and 30 series profile,