Rubik's cheese

twisty puzzle. Rotate every ring or flipover the center part.
Version 1: more slim design, be careful by flip over center. Not for smaller kids. (photo)(SCAD height parameter=20)
Version 2: thicker, if you like to give it to kids. (photo black background: scaled 70% in slicer)(SCAD height parameter=40)
both print versions cannot be mixed.
Print center part, 2 colors by 2=4 pieces.
Print segment 6 colors by 2=12 pieces.
Center parts have holes 3mm to insert pieces of filament, glue together down side, face to face, different colors. Then screw together the 2 double center parts with M4 screw and locking nut, Put a washer under the head of screw. If you assemble Version 2, fill the track with the color segments before. There is small space for your screwdriver between segments.
Have printed in ABS, acetone vaporized. Also PLA should work. No support needed.
XY size compensation = 0. (parameter is included in scad file)

scad file: because of the rounded corners, it takes a lot