I would love to re-use my failed prints by re-extruding the plastic to be used int he 3d printer once again. One thing that stand in my way is finding a effective way to shred the plastic into smaller bits for the extrude to use. What is a good thing to look for to accomplish this? Maybe a really big 'paper' shredder?
there is a project called
precious plastic and there is a plastic shredder, but it is a rather expensive solution.
The paper shredder will be ok as long as you can feed it with plastic.