I've designed spinner cap for my F5D contest model Fornication5D for folding props (11x21"). But can be used for different folder props as well.
The spinner is designed for 26mm blade distance(X), hub height of 11mm and hub blade angles -3 to +5 deg (Z).
Attached an example drawing of the hub I use on my F5D models.
Hub must be machined from high strength alloy. Only Spinner cap is printed part. Hub is slide from side into cap and scured by CA. Motor drive shaft center hub AND cap (must be long enough)
Disclaimer: I’ve tested the part up to 12k rpm only. Higher rev may damage the part. As well varying materials, print quality and more will make your print different from mine. It might break and throw sharp parts and could harm you or somebody else. Make safe tests and make sure it will hold up for your purpose before you put it on a plane and go flying.
I would not be responsible in case of injury, physical damage or improper use of these files/ planes and how they are used.
For more composite RC plane stuff & fast planes visit my website: cfd.koelleteam.de
set wall thickness to min 0.8mm