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Re: Old Blades


 

开云体育

Well blade repair is a brazing operation so I would expect the Torch to work fine scarf the ends evenly about ? to ?”, and then braze/silver solder them. Then grind it back totally flat.
The last time I broke a blade was like 17 years ago, I bought two new blades then and while waiting to get them did the silver braze on the broken one, figuring it wouldn’t last. [It wasn’t that good looking a braze job either. I vaguely recall it took me three tries]
I am still waiting for it to fail or get dull (I don’t use it all that much, perhaps once a month or so), meanwhile I have lost track of one of the replacements, and the plastic bubble on cardboard for the other has completely disintegrated.
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It was using a jig much like (but aluminum) much like what is shown in the graphic on this
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or this
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Now that jig is considerably more expensive than buying 1 replacement blade is, so do your own math……
Sometimes it is worth it just for the experience.
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R James (Jim) Klessig P.E. | Senior Power Systems Engineer |
Electrical Reliability Services, VERTIV
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