Re: rebuilding edge of mower blades with weld

Posted by Jerry/MT on April 26, 2006 at 18:49:57 from (67.72.98.45):

In Reply to: rebuilding edge of mower blades with weld posted by ironhoarder on April 26, 2006 at 07:48:32:

There is probably a real good way to repair a $20 brush hog blade but it won't be developed by some guy in his garge with a mig welder and will cost 20 times what a replacement blade costs. Those blades are forged I believe, and welding something to them will change the properties of the material and not likely for the better. If they weaken the blade and cause a crack to propagate, a blade failure is the likely result. The blade will not be contained by the housing and the result can be a serious injury or a fatality. If I were you I'd be worried about hurting somebody and the subsequent liability.
I don't normally come out this strongly about any issues on these forums, but I saw enough failures of rotating machinery in my engineering carreer on high value devices that were highly engineered and seriously tested.
Follow the manufacturer's instructions on sharpening the brush hog blades or better yet, replace them. They are not that expensive especially when the cost of emergency trauma care is considered. Please don't do something that might get you or somebody else seriously injured or worse.

A former aircraft propulsion engineer for 34 + years.

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