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Shredder blade welding. #8848164 05/07/23 03:06 PM
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J.G. Offline OP
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JKMccoy told me his grandad was a welder, and he would run a hard surfacing rod down the edge of the blades every year. My 15' batwing blades are 5 years old. It's quite the chore to replace them, and $300. I thought I'd give this a go. On the box of welding rods, it is labeled that the rods create a surface of a Rockwell hardness of 62.

[Linked Image]

Weld, clean, weld, clean. Repeat until it was built up enough.

[Linked Image]

Grind em sharp.

[Linked Image]

[Linked Image]


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Re: Shredder blade welding. [Re: J.G.] #8848172 05/07/23 03:24 PM
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Good job!



Re: Shredder blade welding. [Re: J.G.] #8848300 05/07/23 06:17 PM
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That a good idea and looks good. let us know how it works

Re: Shredder blade welding. [Re: J.G.] #8848352 05/07/23 07:43 PM
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Nice! Great idea!

Re: Shredder blade welding. [Re: J.G.] #8848383 05/07/23 08:37 PM
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Interesting that you did that. My now deceased old neighbor (bad neighbor, not the good neighbor) said that his son did what you did to put a harder edge on the shredder blades. As for my shredder, which now has new blades, I had just sharpened them every season, and had taken off a lot of metal over time. It’s time to sharpen the new blades, maybe, and I’ve wondered if removing metal to sharpen exposes softer metal which wears faster.


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Re: Shredder blade welding. [Re: 603Country] #8848399 05/07/23 08:53 PM
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Most likely the entire blade is made out of the same steel.

But, blades do get shorter. Most of the work done is at the tip of the blade. Eventually they will get short enough they do not overlap any longer, and will leave strips of uncut grass.


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Re: Shredder blade welding. [Re: J.G.] #8848408 05/07/23 09:03 PM
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That's pretty cool
How does a surfacing rod differ from your typical welding rod? Or does it?


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Re: Shredder blade welding. [Re: J.G.] #8848425 05/07/23 09:44 PM
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I like your style, sir. But what do you do about blade balance? Is it significant enough to shorten bearing life?


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Re: Shredder blade welding. [Re: TCM3] #8848426 05/07/23 09:47 PM
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Originally Posted by TCM3
That's pretty cool
How does a surfacing rod differ from your typical welding rod? Or does it?


Hard surfacing rods produces much harder steel than an E6011 or E7018.


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Re: Shredder blade welding. [Re: kry226] #8848427 05/07/23 09:50 PM
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Originally Posted by kry226
I like your style, sir. But what do you do about blade balance? Is it significant enough to shorten bearing life?


Centrifugal blades, bolted to a flywheel that probably weighs over a hundred pounds. I doubt if one blade is an ounce or two heavier than the other, the flywheel or bearings will notice.

Bush Hog batwing shredders are rated to cut up to 3" trees, if memory serves. But, mine mostly tends the rifle range, and right up against tree lines. After the blade rehab, you would have thought I mowed the rifle range with my ZTR lawn mower.


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Re: Shredder blade welding. [Re: J.G.] #8848446 05/07/23 10:23 PM
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It works well, I always put some hard spray on mine when new, doubles the life.

Re: Shredder blade welding. [Re: J.G.] #8848489 05/07/23 11:51 PM
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Originally Posted by J.G.
Originally Posted by kry226
I like your style, sir. But what do you do about blade balance? Is it significant enough to shorten bearing life?


Centrifugal blades, bolted to a flywheel that probably weighs over a hundred pounds. I doubt if one blade is an ounce or two heavier than the other, the flywheel or bearings will notice.

Bush Hog batwing shredders are rated to cut up to 3" trees, if memory serves. But, mine mostly tends the rifle range, and right up against tree lines. After the blade rehab, you would have thought I mowed the rifle range with my ZTR lawn mower.

up


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Re: Shredder blade welding. [Re: J.G.] #8848660 05/08/23 10:04 AM
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Aren’t new/freshly sharpened blades great? Mine always find a rock, limb, crescent wrench, edge of driveway soon after sharpening


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Re: Shredder blade welding. [Re: kry226] #8848728 05/08/23 12:52 PM
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Originally Posted by kry226
I like your style, sir. But what do you do about blade balance? Is it significant enough to shorten bearing life?


not enough to matter, seen same thing done. I personally couldnt tell the difference but this was pre-china everything


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Re: Shredder blade welding. [Re: BigPig] #8848774 05/08/23 01:59 PM
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Originally Posted by BigPig
Aren’t new/freshly sharpened blades great? Mine always find a rock, limb, crescent wrench, edge of driveway soon after sharpening

On my 1978 Bush Hog Shredder would cut just about anything the tractor could push down. I used Rock Crusher Rods similar to Lincoln Wearshield® ABR and they cut like new for years. I hit a big iron ore rock and chipped a chunk off of both blades. I stopped and inspected them and the chipped areas looked like they had been knapped like flint arrowhead and extremely sharp. The blades lasted long enough to get loose on the attachment bolt.

Re: Shredder blade welding. [Re: J.G.] #8848779 05/08/23 02:09 PM
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Hmmm... Pretty good idea!

Re: Shredder blade welding. [Re: Old Rabbit] #8850748 05/11/23 08:24 PM
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Originally Posted by Old Rabbit
Originally Posted by BigPig
Aren’t new/freshly sharpened blades great? Mine always find a rock, limb, crescent wrench, edge of driveway soon after sharpening

On my 1978 Bush Hog Shredder would cut just about anything the tractor could push down. I used Rock Crusher Rods similar to Lincoln Wearshield® ABR and they cut like new for years. I hit a big iron ore rock and chipped a chunk off of both blades. I stopped and inspected them and the chipped areas looked like they had been knapped like flint arrowhead and extremely sharp. The blades lasted long enough to get loose on the attachment bolt.


Maybe I should do this for my ZTR blades. I hit all kinds of stuff. I found a grill grate one day, it passed through all 3 blades before exiting out the chute, what a mess


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Re: Shredder blade welding. [Re: J.G.] #8887021 07/22/23 03:13 PM
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Hard surface one side only. Done this way the blades are self sharpening. Nice job.


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Re: Shredder blade welding. [Re: Smokey Bear] #8887363 07/23/23 12:28 PM
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Originally Posted by Smokey Bear
Hard surface one side only. Done this way the blades are self sharpening. Nice job.



Same principle as this:

[img]https://www.fisherbarton.com/products/turf-care/laseredge/[/img]


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