The S3. AKA Los Dos
Originally when this printer was assembled in 2017, it had a 12 volt power supply, MKS Robin lite main board, and a single CR-10 style extruder. It was relatively featureless, other than the large 300mm x 300mm print bed. Which, ironically was the first part which need to be replaced. Between 2017 and 2019, the manufacturer had upgraded the printer model to 24v, and the replacement that came wouldn't work with the power supply on hand, so time to consider an upgrade. A new board and two power supplies were ordered to go with the 24v bed. The MKS-Robin Lite was swapped out with an Octopus v1.1 and TMC2209 steppers. The original Y-carriage was swapped out for a lighter stronger version. The X-carriage has been swapped out a few times depending on extruder setup. The only original parts are the frame and the steppers. Even the original end-stops are not used anymore. At one point, this printer had 3 hotends, then an all-metal, then a liquid cooled. It ended up, finally, with a 2-in-1 out non-mixing hotend.