About this 3D model

The internal axle of the filament spool holder of my our CR-10 Smart is broken, we noticed the design of the internal axle are very thin, and we also see other user is having the same issue. It can be strengthen with longer screws, and here's what we came out. To make it stronger we suggest to print the part horizontally. What you need:2 x M4 30mm Screws 2 x M4 Nuts Assembly is pretty straight forward. Hope it help to solve your problem too.