Smith Premier N. 10 Spool

The Smith Premier n. 10 typewriters have one ribbon spool fixed in the machine and another one removable. The removable one differs from "standard" spool by having the central hole much larger. I've acquired a very nice machine without the spool and had no chance to buy one anywhere so out comes Fusion 360 and my Prusa MK3S.

Printing:
I've printed mine in PETG with 0.15 layer size, standard 15% fill.
Added support with the Prusaslicer support painter just to the inside of the tape hook hole.

Postprocessing:
Remove the little support, glue the two halves and you are ready to go.