I do not think would work for me... I guess invested in 3D printers to make something quick and use it with ease.
I do not think should take all this too serious... Then we are talking for a factory... not a casual use ... even for business 3D printers are only for
small business ... Therefore a shredder or cruncher would just add to the complexity... Then need a plastic extruder to make filament ... so more complexity...

Concerning environment... Well shredders or cutters or whatever will too add some additional environment wreckage.... So I consider it as plus - minus....

I am gonna keep it simple... Will 3d Print and use new cartridges each time..