Incredible design, it's an interesting take on the regular joy con parallel handle. I printed out the large grip and 20 degrees middle, and it required a bit of filing/sanding to fit the joycons in. I haven't played much using it yet, but the controller feels really good to hold.
Black, White, and Red
The center was printed using the cura filament switch plugin, and printed with the logo facing straight up.
The center piece was printed large side down, to avoid any supports in the rail tracks
The handle was printed upside down, with the two grips pointed upwards to reduce support