Blade design parameters for Paper Shredder

[Muhammad]

Hi everyone,

I’m working on a small office paper shredder designed to handle 7 A4 sheets at a time for an academic project. I have a few questions about my design:

1. The cutting edges on my blade design are curved (R1.01 mm)—is this too small? (Attaching an image for reference. The blade thickness is 6mm, Material: Mild Steel with heat treatment).
2. Is a 500 RPM, 0.7 Nm torque rating and (around 40W motor) be sufficient for this operation? (I understand the info is incomplete but I want to have a general idea).

Appreciate any insights—thanks!

P.s., Please let me know if there is a more specific Forum where I can post this.

Link to Image 1 on Google Drive
Link to Image 2 on Google Drive

 

[Stacy E. Apelt - Bladesmith]

Welcome Muhammed.

This is a knife making site for knives with blades. You really need a mechanical engineering site. I'm moving this to the general knife discussion site where someone might see it and give you a suggestion for a website where it should be asked.
Good luck with your project.

BTW, mild steel won't work. You will want a high-speed tool steel.

 

[Blues]

I'm sorry, but this is outside of the scope of this forum.