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 Post subject: Band saw blade welder
PostPosted: Sun Nov 23, 2014 5:18 am 
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First name: Tom
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I wonder if anyone has ever made a band saw blade welder? Not a jig to hold the blade for brazing but rather a spot welder.
Tom

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PostPosted: Sun Nov 23, 2014 8:15 am 
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Brazilian Rosewood
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Some of the larger metal cutting bandsaws have them built into the saw.


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PostPosted: Sun Nov 23, 2014 10:05 am 
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Clay: Worked as a machinist and all our saws had welders. It seems to me that it would not be too difficult to come up with something that would work. The electronics are beyond me so hoping someone has made one.
Tom

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PostPosted: Sun Nov 23, 2014 3:07 pm 
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Koa
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A good discussion: http://bbs.homeshopmachinist.net/thread ... ade-welder

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PostPosted: Sun Nov 23, 2014 4:08 pm 
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David: Thanks, that was the flavor of what I was looking for, a bit surprised there is not someone here who has done this.
Tom

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PostPosted: Sun Nov 23, 2014 10:23 pm 
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Cocobolo
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I believe Lee Valley has (or had) a jig and 'silver solder' setup to repair bandsaw blades that was used with a propane torch

Brent


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PostPosted: Sun Nov 23, 2014 10:38 pm 
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bftobin wrote:
I believe Lee Valley has (or had) a jig and 'silver solder' setup to repair bandsaw blades that was used with a propane torch

Brent


They still have it. http://www.leevalley.com/en/wood/page.a ... 1036,41048

Alex

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PostPosted: Mon Nov 24, 2014 3:34 pm 
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Brazilian Rosewood
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The silver solder works, but your bandsaw wheel must be at least 14" because I found if the wheel diameter is too small, a brazed joint may not hold up well. It also takes a few tries to get the braze right... right temperature, right annealing, right angle, etc.

So many ways for things to go wrong here... one bad weld and the blade is toast. Often when the blade breaks under tension it also kinks it badly

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