@beegmouse_250240 Well done !
@Gilles160 I actually found not, the act of winding put enough pressure on the walls to partially eject one of the sides. I did print on an MK3 with archne. I ended up just refilling the hole and reprinting.
Anyway, as said above, the screw are not really needed. Friction is sufficient to maintain alltogether.
@beegmouse_250240 I am sorry to see that. Did you use my gcode file and a MK3S or is it another file/printer?
This does not print correctly, model is too thin where the holes for the spool. It split where pictured when the side walls were fitted.