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  1. #11
    Veteran Member wedge40's Avatar
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    Oct 2007
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    2,194

    Default Re: Blade sharpening questions

    Quote Originally Posted by johnnylight View Post
    thanks for the replys.

    I bought 3 new blades and would like to keep the others for back up.
    I currently use a Milwaukee die grinder while the blades are still on.(looking for the best way)
    wow what a pain in the --- taking these blades off.--Do you have any tips on a better way to get them off I used a block 4x4 then I use breaking bar with a pipe for a extender and bang she pops then I used the ratchet, my impact gun will not do it.

    getting back to the right tool for the job of sharpening --is the bench grinder the only one with the built in angle feature?
    I ended up getting a 3/4" impact wrench from Harbor freight. I think the torque is over 1000 ft-lbs. This will snap the nut loose and the you still have hammer the bolt out. I just went through this in the spring. Might tackle it again in the fall.. Didn't have all the grinding wheels I needed.

    Wedge
    1967 Ford 4000,Mahindra 4530 with FEL and BH, Box blade, straight blade, FEL, Rake, Bushhog, Backhoe, Jinma chipper, KKII tiller, Grapple. Mahindra 4530, with FEL and Backhoe.

  2. #12
    Platinum Member ampsucker's Avatar
    Join Date
    Dec 2007
    Posts
    569
    Location
    Southeast Kansas
    Tractor
    BX24

    Default Re: Blade sharpening questions

    i use an agressive rattail file and do them by hand. it offers the best control and you only take off the material you need to get it back to sharp without gouging out chunks of material.

    if they are really bad, i use an angle or bench grinder. but, then again, they shouldn't be really bad unless you out brush hogging with your mower. i mow at 3-4" and rarely hit a rock and only the occasional limb. you should police your mowing area before mowing and you won't have much grinding to do.

    amp
    Kubota BX24 (loader, hoe, 60" belly); Ford 800 tractor; Scott's/Deere 42" mower; 5' and 6' rear blade; 54" Howse tiller; 20' 7,000 lb carhauler trailer; 2 other trailers; 5' dethatcher; 10" single bottom moldboard plow; middle buster plow; 600 lb roller; 3pt auger; front tire chains; Stihl and Honda small engine equip.

    Growing with you season by season.

  3. #13
    Elite Member
    Join Date
    Mar 2005
    Posts
    2,615
    Location
    Bedford, VA
    Tractor
    John Deere 2320

    Default Re: Blade sharpening questions

    Quote Originally Posted by barneyrb View Post
    I use a 4.5" angle grinder with a flapper wheel, I think in 60 grit. Doesn't heat the edge and turn it blue nearly as quick Harbor Freight Tools - Quality Tools at the Lowest Prices and leaves a very smooth edge, almost polished.
    This is what I am using as well.. For my infrequent needs a HF $12-15 (on sale), 4.5" grinder and a flap disc does a good job.. I try to get them sharp but not so sharp you can easily cut yourself if you touch them..

    As mentioned I use put them in a vise (another HF great buy - $60 normaly but with coupon it was $29) and follow the original angle.

    I have tried using a stand grinder but it didnt offer the flexibility of the hand grinder in getter the angle i wanted..

    Brian
    Bedford, VA
    2320 w/ 62D MMM, 200CX FEL, Pats EZ Change, LX4 Cutter
    Co-owner (with my father) of John Deere 790, 30 HP, 4x4, 513 cutter, 70 FEL
    2012 Nissan Xterra Pro-4x

  4. #14
    Elite Member
    Join Date
    Mar 2005
    Posts
    2,615
    Location
    Bedford, VA
    Tractor
    John Deere 2320

    Default Re: Blade sharpening questions

    Quote Originally Posted by johnnylight View Post
    thanks for the replys.

    I bought 3 new blades and would like to keep the others for back up.
    I currently use a Milwaukee die grinder while the blades are still on.(looking for the best way)
    wow what a pain in the --- taking these blades off.--Do you have any tips on a better way to get them off I used a block 4x4 then I use breaking bar with a pipe for a extender and bang she pops then I used the ratchet, my impact gun will not do it.

    getting back to the right tool for the job of sharpening --is the bench grinder the only one with the built in angle feature?
    Like a lot of things getting them off the first time was the hardest part.. I ended up using a 1/2 drive socket and a piece of pipe to get enough leverage.. I do not put them back on as tight though..

    to keep the blades from moving i use a blade holder i got at Lowes that works pretty good.. I have tried the block of wood trick, but everything you let off the pressure the wood would drop free.. here is a link to what I have http://www.sportys.com/acb/showdetl....=4&test=testpl The worst part is finding a place on the deck so it can be mounted..


    Brian
    Bedford, VA
    2320 w/ 62D MMM, 200CX FEL, Pats EZ Change, LX4 Cutter
    Co-owner (with my father) of John Deere 790, 30 HP, 4x4, 513 cutter, 70 FEL
    2012 Nissan Xterra Pro-4x

  5. #15
    Silver Member
    Join Date
    Mar 2008
    Posts
    218
    Location
    Rockford, MI
    Tractor
    JD 3720 CAB

    Default Re: Blade sharpening questions

    Impact gun and angle grinder with the flexible sanding wheel. With the impact gun getting all three blades off is a two minute job.

  6. #16
    Gold Member johnnylight's Avatar
    Join Date
    Aug 2005
    Posts
    452
    Location
    upstate, New York
    Tractor
    TC34DA

    Default Re: Blade sharpening questions

    Quote Originally Posted by wedge40 View Post
    I ended up getting a 3/4" impact wrench from Harbor freight. I think the torque is over 1000 ft-lbs. This will snap the nut loose and the you still have hammer the bolt out. I just went through this in the spring. Might tackle it again in the fall.. Didn't have all the grinding wheels I needed.

    Wedge
    1000 torque wow I should check this out what are they going for?
    John - TC34DA 757C backhoe/FEL/rake/QA fork/rdm/toothbar/subsoiler

  7. #17
    Gold Member johnnylight's Avatar
    Join Date
    Aug 2005
    Posts
    452
    Location
    upstate, New York
    Tractor
    TC34DA

    Default Re: Blade sharpening questions

    Does anybody have the built in angle adjustment? makes it sound simple to get the right angle and not unbalanced.
    John - TC34DA 757C backhoe/FEL/rake/QA fork/rdm/toothbar/subsoiler

  8. #18
    Veteran Member wedge40's Avatar
    Join Date
    Oct 2007
    Posts
    2,194

    Default Re: Blade sharpening questions

    Quote Originally Posted by johnnylight View Post
    1000 torque wow I should check this out what are they going for?
    Ok so I was off by a few ft-lbs.
    Harbor Freight Tools - Quality Tools at the Lowest Prices
    They are not cheap, but my bush-hog required my nuts to be torqued to 650 ft-lbs. To get them loose the first time I had to have a friend come over and help break them loose. 3/4" breaker bar and a 5' pipe. Each nut snapped loose and my friend ended up sitting on the ground.

    Wedge
    1967 Ford 4000,Mahindra 4530 with FEL and BH, Box blade, straight blade, FEL, Rake, Bushhog, Backhoe, Jinma chipper, KKII tiller, Grapple. Mahindra 4530, with FEL and Backhoe.

  9. #19
    Veteran Member Timber's Avatar
    Join Date
    Jul 2006
    Posts
    1,745
    Location
    East Bridgewater Massachusetts
    Tractor
    Kubota B7800

    Default Re: Blade sharpening questions

    I always use a disk sander to address deep nicks but you always dress the edge with a cold file. Doesn't matter what the edge is on. That is the way to do it
    Kubota B7800, Sundown Loader Forks, Landpride PHD, Sundown 66" Box Blade, 800 pound Ballast Drum with chain storage, ATI Grapple, 60" WR Long Diverter, Landpride Brush mower, 7' Landpride Rake,Manlift platform, Bucket mounted 6' Snow Plow, 3 point Cherry Picker, Subsoiler

  10. #20
    Epic Contributor Bird's Avatar
    Join Date
    Mar 2000
    Posts
    37,748
    Location
    Texas

    Default Re: Blade sharpening questions

    Quote Originally Posted by Timber View Post
    I always use a disk sander to address deep nicks but you always dress the edge with a cold file. Doesn't matter what the edge is on. That is the way to do it
    OK, but why do you need to dress the edge with a file?
    Bird

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