Created by GYANJEET RAJ on 14 August, 2018

On what factors geometry of Plastic shredder blade is designed?

Following clarification needed on the shredder blade
1. How can we decide the diameter of the blade? 
2. How much the blades on two opposites shafts should overlap? Refer image for clarification. Currently its 21mm. How should it decide it accurately?
2. How the geometry of the tooth on each blade is designed, how to decide its rake angles?