Spinner with custom name
Customazible with nut or bearing on the outside and name.
If you don't want nuts but bearing set nut_dia=22 and n_side big (i.e. n_side=40).
Another customazible spinner her.
https://www.thingiverse.com/thing:2434745
You can decide NUT DIA (which is diameter in mm of the exagonal nut) an N side (number of the faces).
You can write: 11.1 for M6 metric exagonal nut or 14.8 for M8 or 18.9 for M10. Look here https://www.slideshare.net/tejasudas/dimensions-of-metric-hex-nuts.
Or you can write NUTDIA 19 and NSIDE 40 and then use a one cent coin, a penny.
Thanks to
STL->Openscad converter
http://jsfiddle.net/Riham/yzvGD/embedded/result/