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I Forge Iron

sheet metal shear blades


dsabbagh

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I want to have new blades fabricated for my jump shear (roughly 33" in length). The person at the shop where I am going to get the blades made is recommending using 4140. Is that steel going to be hard enough for cutting mainly 20ga regular steel or less? Thank you for any responses.

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Buy new from someone who makes them industrially. Making my own shear blades would be a desperation move with limited expectations for limited success. Even asking if 4140 is appropriate is all I'd need to hear to look elsewhere. This isn't the kind of thing a fab shop does, even most tool and die shops don't. The fab shop is probably a fine outfit, this is just so far out of their range it's not even fair asking.

 

Frosty The Lucky.

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