About this 3D model

I actually like the cartridge so I made an attachment for my drill to rewind 3rd party filament back onto the davinci spool. Simply open your cartridge. Remove the spool. Mount it to this device and use it to your drill to fill the davinici spool. Put the cartridge back together and rock on. You will need to add a drill driving bit. I heated up an screw driver bit and pressed it into the pre made drive slot. Works like a charm.