Just leaving this here! Sorry if its a re-post, coudnt resist sharing! 
Filastruder is cheaper.
oh yeah? Thanks!

Is this technology mature enough ?
This machine integrates a plastic shredder. Youād have to figure out if itās good enough for your needs.
Not intensely enter your 3d printing groupā¦and this painging for my and i try to make a group and bye chane after serching i post http://here.but after i dont know how to move your groupā¦but all paintings my creativity