Found this old windmill in a box of houses for the H0 modell railway. Unfortunately the wings were broken and one was missing.
Print 4 new wings instead of replacing only the missing ones.
Print both stl-files with 0.1 layerthickness and support structure (roof shaped). The hole for the axis might be too tight. Use a drill to enlarge the hole. Drill both wing pairs at the same time, otherwise the holes might not match.
We tried to print the wings with 0,06 layerthickness but then you can't remove the support structure without destroying the wing.