This is the L25, this printer was designed around a 25x25mm aluminum profile cubic frame for stiffness (and cost) and uses a direct drive extruder with an E3D V6 bowden clone (or legit, as you want) hotend, to allow it to print with flexible materials.
Printr is modular the max build volume depends on the frame you build, and the 3d-printed parts do not require modification to build a larger printer, however, make sure to build your frame precisely because it will affect your print quality.
I included the .STEP and .f3d files, if you need/want to make modification or improvements
The rocktopus was printed at 200 microns using the standard simplify 3d settings.
parts used ( pretty classic stuff):
°ramps 1.4 with reprap LCD discount
°E3D V6 Bowden clone
°60x60 fan for electronics
°makerbot style reprap endstops
°Metric screws and nut
(M3x16x20x30, M4x10(just one for the extruder lever) and M5x30)
°LM88UU & 8mm steel rods
°6202z bearings (as idlers)
°GT2 belts and pully
°anycubic bearing and hobgear(extruder)
°make sure to use a short section of the PTFE tube of the hotend to use as a liner between the heat break and printed part
°check the CAD files for assembly instructions
Parts were printed with 3 perimeters and 3 top and bottom layers in ABS, PLA should do fine but use ABS if you plan to enclose the machine, Some parts require supports (especially the Z motor brackets).