I've got a ton of bent blades. and I've saved them knowing I could probably bend them back into shape. but have procrastinated not sure of which way to go. I thought about the heat and came to the same conclusions you mentioned. Thanks for crediting my thought on that one. so now will seek a way to put a jack to work bending it. shop press design and build coming. thanks for the tips and showing it can be done. and best of all thanks for sharing!
Great video. I feel like searching for other blade straightening videos, give them thumbs down, send them here. FOR THOSE WHO DO NOT HAVE A PRESS, READ BELOW: I don't have a press, but I noticed that the "bending" I experienced due to hitting something immovable was more of a TWIST as opposed to a flat bend. This makes sense because the tip was "bent" down. If it had "flat" bent it should have bent up (in reaction to hitting something below). But it sure seems the end TWISTED rather than bent. I belabor this point because it affects how to recover when you do not have a press. To UNTWIST it, you can use a vice and a pipe wrench (the bigger the better). Put the pipe wrench over the sharp edge and torque the twist out of the blade until it matches an undamaged blade. NOTE: This is quite different from putting the pipe wrench on the end to take out a flat bend -- you want to UNtwist the blade, not bend it. I found this untwisting works a whole lot easier than doing a flat bend using only hand tools and elbow grease.
My blade has a thin slot cut in it not far from the tip end of the blade. The slot is on the bend where the blade has a little bend and folds a bit near the outer tip. This little slot (slice) in the blade collects grass in it and clogs up my mower. Is there a way to just plug up this slot or do I need to replace the whole blade? I was wondering if maybe I could cover over the slot with epoxy glue and the remainder of the blade would keep working fine. Any idea?
Could you please provide any info on the press you are using to straighten the blade? If pressure is rated by tons, how many tons of pressure is used for this operation? Could a shop press be used?
I don't think that mower blades are made of spring steel. But whatever properties they have from the manufacturer will be changed if you forge them. So my advice is not to heat them to straighten them.
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Not everyone has such an impressive press setup but your tips on when not to heat and anneal a blade are PRICELESS
I've got a ton of bent blades. and I've saved them knowing I could probably bend them back into shape. but have procrastinated not sure of which way to go. I thought about the heat and came to the same conclusions you mentioned. Thanks for crediting my thought on that one. so now will seek a way to put a jack to work bending it. shop press design and build coming. thanks for the tips and showing it can be done. and best of all thanks for sharing!
Great video. I feel like searching for other blade straightening videos, give them thumbs down, send them here.
FOR THOSE WHO DO NOT HAVE A PRESS, READ BELOW:
I don't have a press, but I noticed that the "bending" I experienced due to hitting something immovable was more of a TWIST as opposed to a flat bend. This makes sense because the tip was "bent" down. If it had "flat" bent it should have bent up (in reaction to hitting something below). But it sure seems the end TWISTED rather than bent. I belabor this point because it affects how to recover when you do not have a press. To UNTWIST it, you can use a vice and a pipe wrench (the bigger the better). Put the pipe wrench over the sharp edge and torque the twist out of the blade until it matches an undamaged blade. NOTE: This is quite different from putting the pipe wrench on the end to take out a flat bend -- you want to UNtwist the blade, not bend it. I found this untwisting works a whole lot easier than doing a flat bend using only hand tools and elbow grease.
Lawnmowers throw material up so the blades can continue cutting the grass effectively mulching the grass. That’s why they always bend down
Interesting. I don’t have a press. I used a heavy hammer to bend it back. Took a bit of doing. Any down side doing it my way?
My blade has a thin slot cut in it not far from the tip end of the blade. The slot is on the bend where the blade has a little bend and folds a bit near the outer tip. This little slot (slice) in the blade collects grass in it and clogs up my mower. Is there a way to just plug up this slot or do I need to replace the whole blade? I was wondering if maybe I could cover over the slot with epoxy glue and the remainder of the blade would keep working fine. Any idea?
Could you please provide any info on the press you are using to straighten the blade? If pressure is rated by tons, how many tons of pressure is used for this operation? Could a shop press be used?
if you watched the video he said 30 tons
Can you add weld to the big chips and then sharpen OR will this soften it too?
It will soften, either live with the chips or grind down pass the chips and balance
Have you ever had any issues with them after straightening them? Is this something shops will do?
No shops will do this. Legal liability for a $20 blade? Not on
I never had blades bend in 40 years of mowing all manner of lawns UNTIL.. we started using cheap Chinese steel. Do you notice the difference?
I'd sure like to see a photo of a broken mower deck, due to a fractured blade.
Nice job 👌
So much conflting information out there. Spring steel is hardened steel that won't shatter when it hits something?
I don't think that mower blades are made of spring steel. But whatever properties they have from the manufacturer will be changed if you forge them. So my advice is not to heat them to straighten them.
Wow! Incredible hey. Thanks man.
Thanks good info and advise
Good advice
Yes everybody has a press . Unless video
fantastic
yours are cheapish (probably) chinese steel. Have a look at the USA made John Deere blades on old John deere mowers. They are a pleasure to work with