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The Shechitah Knife: Difference between revisions
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# Technically, anything that is detached from the ground and sharp can be used for kosher slaughter, as long as it's free of imperfections. A reed membrane would be good if it doesn't have any splinters that would come out. Practically, however, this is exclusively done with a knife.<ref>Simla Chadasha 6:1</ref> | # Technically, anything that is detached from the ground and sharp can be used for kosher slaughter, as long as it's free of imperfections. A reed membrane would be good if it doesn't have any splinters that would come out. Practically, however, this is exclusively done with a knife.<ref>Simla Chadasha 6:1</ref> | ||
# One shouldn't use a scythe or even a double edged knife if one side of it is a scythe. Bediavad if he did it and knows he used the kosher side, it's ok, and if he smoothened out the scythe side then he can use it lechatechilah.<ref>Simla Chadasha 6:2</ref> | # One shouldn't use a scythe or even a double edged knife if one side of it is a scythe. Bediavad if he did it and knows he used the kosher side, it's ok, and if he smoothened out the scythe side then he can use it lechatechilah.<ref>Simla Chadasha 6:2</ref> | ||
=== Invalidating Factors=== | |||
# A knife cannot have any nicks in it or be used previously with non-Kosher food or for idolatry. It must not be glowing hot or attached. ''See [[Knives That Cannot Be Used for Shechitah]] for details.'' | |||
===Detached From Its Source=== | ===Detached From Its Source=== | ||
# Anything sharp attached to the ground or a body may not be used for shechitah until it is detached.<ref>Simla Chadasha 6:5</ref> | # Anything sharp attached to the ground or a body may not be used for shechitah until it is detached.<ref>Simla Chadasha 6:5</ref> | ||
# If it was detached and then reattached, one still should not use it regardless of whether he plans to leave it there (which would render the meat prohibited due to the Gemara's uncertainty) or not (which would be invalid on a rabbinic level). If one's intention is unformulated, we can determine based on context.<ref>Simla Chadasha 6:5</ref> | # If it was detached and then reattached, one still should not use it regardless of whether he plans to leave it there (which would render the meat prohibited due to the Gemara's uncertainty) or not (which would be invalid on a rabbinic level). If one's intention is unformulated, we can determine based on context.<ref>Simla Chadasha 6:5</ref> | ||
# An animal's jaw with sharp teeth may not be used, as the gaps between teeth are the same as nicks in a knife, but a singly tooth attached to a jaw is fine. Even a single nail on a severed foot would be ok. Some argue that if it's still attached to a whole limb, such as a whole jaw or whole animal foot, that would be considered "attached" to its source of growth.<ref>Simla Chadasha 6:6</ref> | # An animal's jaw with sharp teeth may not be used, as the gaps between teeth are the same as nicks in a knife, but a singly tooth attached to a jaw is fine. Even a single nail on a severed foot would be ok. Some argue that if it's still attached to a whole limb, such as a whole jaw or whole animal foot, that would be considered "attached" to its source of growth.<ref>Simla Chadasha 6:6</ref> | ||
==Crafting a Shechitah Knife== | ==Crafting a Shechitah Knife== | ||
Modern day shechitah knives are commonly rectangularly shaped to facilitate shechitah without issues of chaladah and derasa and made with easy to sharpen steel that maintains its edge to minimize pegimot. | Modern day shechitah knives are commonly rectangularly shaped to facilitate shechitah without issues of chaladah and derasa and made with easy to sharpen steel that maintains its edge to minimize pegimot. | ||
