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There is a whole thread in the machine building forum. It seems 2hp is what is a slam dunk for spreading.
What would be really interesting, and since it’s your senior design class, it would be interesting to see a calculated value for what this spreader would need for say, 1/8″ HDPE
Plastic dust will be very very minimal. The fumes also should be minimal due to the fact that the plastic should not be getting that hot.
Dave actually touches on this detail in his download pack. Everything in industry is just well ventilated.
I found a 1750rpm 1/4HP dc motor with a 50:1 ratio gear box.
Should give me about 50Nm and from all the threads on this subject it seems too small. Time will tell.
I will start a new thread once I get some parts cut out.
I figured I would do my best during assembly to get everything really cleaned up and I am actually going to sharpen the blades and cutting surfaces to give it a better chance.
I will have all this in my thread when I start one.
Thanks so much for these. I have my material on order and will probably start to cut out the parts this week. I was able to source a motor and gear box (all the calculators say it’s under sized) but I’m hoping that I can make it work by pre-cutting out sections I know will be difficult.
Once I get some parts being made I will be sure to upload some pictures.
Thanks for converting them!