Remixed from Meisterodin's model: https://www.thingiverse.com/thing:1805621
Added a few more details: restraining bolt holes and sockets, some vents on the back and shoulder guards and some text, a few more details on head and an openable jaw. I also strengthened one of the waist joints as it broke off when inserting the ball. The core is made out of a standard glass marble which is 16mm diameter, black or dark red and held with epoxy. I know it normally would have an armor plate protecting the core but Ilike it as it is now. The jaw was supposed to be attached with a wire as an axle, but it stays in and moves just fine without it. I also made a second jaw with nubs on sides to form a tighter joint. If your joints are loose adding some super glue to the ball or inner part while detached may help, but with too much it might crack. I also have flipped one shin as they were not symmetrical, but the ones I printed out are the old ones as I only noticed that afterwards. The horn is a bit hard to print and it seems to come out best if printed vertical, also printing hands with fingers facing up is a good idea. It was definitely a good excuse to rewatch the series again in order to get some screenshots as reference material. The core.stl is just a ball, but it is the same scale as the rest so it can be used for scaling purposes. EVA_01-articulated.blend contains the unmodified model and can be used for reference as to how to assemble it properly.
several (this uses a lot of filament - at least 220g) ABS, PLA
15% most parts, 30%torax and abdomen, 100% head, horn, jaw, hands
blue/ dark blue
-definitely get a whole reel of blue filament first as it's cheaper than per 100g, this model is big and uses a lot of it.
-do not sand balls unless necessary, they can be really loose
-it's big, about 30cm
-print smaller bits like horn or jaw one at a time as they may fail easily due to unsticking
-shoulder guards are press-fit and can need some sanding of them or shoulder to get on completely
-it is a very bad idea to start a print with a ball due to low contact area, balls come out way better and the print unsticks much less if they are pointing up or sideways rather than down, abdomen being an exception as it has a big ball with a flat zone it can stand on.
-printing parts with the least important side facing down, like the side that will be glued or the side facing inwards produces less conspicuous support separation areas, so less grinding is necessary.