dsabbagh Posted January 16, 2015 Share Posted January 16, 2015 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. Quote Link to comment Share on other sites More sharing options...
BIGGUNDOCTOR Posted January 16, 2015 Share Posted January 16, 2015 There are companies that sell replacement shear blades, why are you having a shop make a set? And no, I wouldn't use 4140 for blades on a shear. Quote Link to comment Share on other sites More sharing options...
Steve Sells Posted January 16, 2015 Share Posted January 16, 2015 4140 for a sheer blade? no way, Look at A2 and D2 both are common. Quote Link to comment Share on other sites More sharing options...
Crazy Ivan Posted January 16, 2015 Share Posted January 16, 2015 A2 for punches, dies, and shear blades from the majority of what I've seen. Is there something wrong with sending them out for sharpening? That's common practice as opposed to buying/making new blades all together. Also much much cheaper. Quote Link to comment Share on other sites More sharing options...
dsabbagh Posted January 16, 2015 Author Share Posted January 16, 2015 Thank you for the responses. The original blades were bent thus necessitating getting new ones. Quote Link to comment Share on other sites More sharing options...
Steve Sells Posted January 17, 2015 Share Posted January 17, 2015 Could you perhaps find a smith to un bend them for ya.... Quote Link to comment Share on other sites More sharing options...
Frosty Posted January 17, 2015 Share Posted January 17, 2015 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. Quote Link to comment Share on other sites More sharing options...
njanvilman Posted January 17, 2015 Share Posted January 17, 2015 If your blades are from an obsolete machine, sending a good tracing to a company that makes blades for shears would let them duplicate what you need. Or if need be, ship them your old blades and tell them what you need. Duplicates could be made to match. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.