There is where you see i have been working on this for a while

 

This is my v0.6.8 shredder it is a six blade model powered by a 250 watt wheel chair moter

 

It is the first machine in a bunch of machines made to recycle plastic in to fillierment in futrue posts there will be more on how it does this but so far all you need to know is that the plastic needs to be ground up before it can be recyled other wise it will be too big to fit in the other machines.

This is the one i will print  for my passion project this year and for the science expo.