Cube 3 spool holder

Printing using a 3D Systems Cube 3, when the filament breaks it takes too long to open the cartridge to free the broken filament, feed new one and close the cartridge case again.

To save myself some time, I modified the cartridge case as per picture, created and printed a spool holder as to feed the printer from outside the cartridge. Now if the filament breaks I can easily fix it :)