This is a simple tray to hold all the parts included in the RS Watch Mainspring Winder by vishnu350. The complete small set (labeled as normal in the file folder) includes the bowl setter, winder housings from 7.0mm to 12.5mm, plunger from 7.0mm to 12.5mm, winder base 1.5mm and 2.0mm, and also the staple jig. Once you have printed all the pieces, this little tray will make a handy storage for all the various pieces. Simply insert the plungers into the winder housings and put them in the tray in order. The small square slot is used to hold the staple jig.

I printed it with pla, 0.2mm layers and 20% infill and that seems to work well.