Hello Mr Baioli, I have improved the files and I just need the first part with White PLA and the top ring of motives again with White PLA 

Hello! This is the general shape of my 3d printing connector.  The first part: has 2 White Rings , 1 white PLA curved shape  ( For now is White but later it will be Wood Composite)   ,   The 2nd part: has 3 White Rings, 10 Black PLA floral motifs  ,   the 3rd part: has 1 White PLA shape without any Rings.

Disegnato in mm ma mi serve in cm, quindi le dimensioni dovrebbero aggirarsi sui 9.6/9.8 cm.

File bozza ruota dentata per esame Casale

in allegato il file richiesto, devo ancora metterci mano per lavorarlo a meglio. Come da accordi tuttavia lo invio in allegato. 
Grazie ancora per la disponibilità dimostrata.