Like on pcb shredders where it has the barrel with the like bolt on cutters?

I agree with you, and in fact the slipping in the belts could help prevent any serious damage to the shredder as well. But my criteria was that it be as compact as possible and a belt system would need to be large to step down the high rpm to a very low rpm.

If the carbide teeth were to fragment it could damage the shredder. I would imagine saw blades might be harder to use because theyre more fragile, good for high RPM cutting but they dont have a lot of strength when you want to shred slow with a lot of torque. Although i could be wrong because if you had a good way of feeding the plastic so the saw blades nibble away and dont take large cuts it might be okay. if you had a small cnc mill you could cut out blades with an endmill or if you had access to a cnc plasma cutter that could also cut out new blades pretty easily

@@SciCynicalInventing great feedback. Thanks. That's an interesting consideration, the feed rate and it makes complete sense, what you say about the bite size. Alternately to using saw blades, what sort of cheap thick steel discs are out there I wonder.

Angle grind some large washers

@@altrombone1775 good idea. I'll have to see what I can get at the store. I'm still considering if small carbide tooth circular saws could work at low velocity on something like a PETE bottle neck/threads

​@@altrombone1775I'm not "unsold" on the idea of using washers, but what would your thoughts be for using 1084 knife blade stock instead? Cut them to a uniform size, grind the cutting teeth in, and then drill your preferred diameter for the rotating axle.

I didn't change the blades, the blades were cut according to the earlier design, but yes, the updated design has better blades. I had the blades cut before the new design came out.

I have but I haven't tried it, I would imagine it's probably impractical to do. I would be worried about sodt plastic sticking and clumping together, which would wear down the shredder faster.

@@SciCynicalInventing I would try it ( I don't own a shredding machine to try it myself) . I would place 5-10 batches (say PLA) in an oven starting with the lowest temperature range (say 50C - 100C in 10degree increments) . Load all batches at 50C then pull one out and shred and observe ,then raise oven to 60C wit for x minutes for batches to come up to temperature then repeat. In the end you should have a rating of catching possibly an ideal temperature window for shredding . I am going to predict a slightly hotter batch is ideal ,as it cools down in shredder it finds the ideal shred point. Another idea is if the experiment shows any signs of success the question becomes finding a way to heat the plastic just before going into the shredder tray. Lastly with PLA I wonder if it being soaked first changes its ability to be shredded . In other words , is a dry PLA easier than a fully soaked PLA to shred? Thanks for your videos .

normally,shredder machine is according to customers needs,recommend different shredder model

Any plastic that's not a bottle, got a broken printer strip the plastic, and scrap it

Drop a link

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