# Why does Guillotine have of 45 degreed blade rather than the one parallel to the ground? [closed]

What is the point of having 45 degreed blade in Guillotine? After all, the pressure-Force over Area-blade imposes to the neck is the same either way.

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Now this is a question that can safely be said to belong at meatpacking.se. -1 – user346 Dec 27 '10 at 7:25
@space_cadet Do you mean that you think this is not a physics question, or that you are uncomfortable with its macabre subject matter? – Mark Eichenlaub Dec 27 '10 at 7:47
Frankly, I'm curious about the answer, although not so much I'd be interested to do much work looking for it myself. – Raskolnikov Dec 27 '10 at 9:20
@Comptrol: Try cutting potato when you hold knife horizontal its bit difficult but when you hold it slanted it is somewhat easier. What I am thinking is it would require heavier blade if the blade is parallel to the ground. I guess smaller part of blade touches the neck providing more pressure. If you rephrase it I will vote to reopen it. (also google reason for slanted blade of guillotine) – Pratik Deoghare Dec 27 '10 at 19:11
Why closed? I think there is a physics related answer to this. It has to do with the contact mechanics, and the strength of materials. – ja72 Dec 30 '10 at 18:34