The shredders that we have built is upgraded from the first blueprint of precious plastic, what we have changed are:
1) The cover of the hopper is made from Acrylic so the users can see the process inside, very suitable for school or workshop used.
2) The motor is 2 Phrase with inverter so the blades can move in both direction, it enables the shredder to work effectively when the plastic waste is stuck in the blades.
3) We added safety sensor at the cover of the hopper, once opened, the blade will stop working automatically.
Those functions are added to increased the safety and work capability of the shredder.
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