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Joined: May 2001
Posts: 18,354 Likes: 2
Campfire Ranger
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OP
Campfire Ranger
Joined: May 2001
Posts: 18,354 Likes: 2 |
Never owned one before and picked one up to sharpen my flail mower blades. The grinding wheel I picked up is threaded (Milwaukee guy at the big box store recommended it) Far as I can tell I shouldn't be using the flange or flange nut with this wheel. Arbor isn't long enough even it I wanted too. In RTFM all it says about threaded hub wheels is that I might need a deeper guard. Nothing about particulars on them. Problem is that the wheel will spin off, which is fun. Am I just not getting the wheel on there tight enough or is there a trick?
Carpe' Scrotum
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Joined: Dec 2016
Posts: 3,779 Likes: 1
Campfire Tracker
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Campfire Tracker
Joined: Dec 2016
Posts: 3,779 Likes: 1 |
Proper threads?
I have several grinders, and every blankety blanking one of them is a different metric thread and pitch
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Joined: Dec 2002
Posts: 26,102 Likes: 20
Campfire Ranger
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Campfire Ranger
Joined: Dec 2002
Posts: 26,102 Likes: 20 |
Never owned one before and picked one up to sharpen my flail mower blades. The grinding wheel I picked up is threaded (Milwaukee guy at the big box store recommended it) Far as I can tell I shouldn't be using the flange or flange nut with this wheel. Arbor isn't long enough even it I wanted too. In RTFM all it says about threaded hub wheels is that I might need a deeper guard. Nothing about particulars on them. Problem is that the wheel will spin off, which is fun. Am I just not getting the wheel on there tight enough or is there a trick? Every angle grinder I ever used, the wheel spun on opposite to direction of rotation. So in operation, the wheel just wants to get tighter and tighter. I lock the shaft, and tighten the wheel firmly by hand. Then I usually have to find a wrench to remove it. If my mower blade is not too screwed up, I like to use a sanding disc to sharpen it. It cuts a lot slower, does not nick the blade, and is less likely to burn the temper out in places.
People who choose to brew up their own storms bitch loudest about the rain.
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Joined: Nov 2019
Posts: 3,640 Likes: 2
Campfire Tracker
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Campfire Tracker
Joined: Nov 2019
Posts: 3,640 Likes: 2 |
My mind saw “Angie Grinder” and I got excited.
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Joined: Sep 2004
Posts: 8,037
Campfire Outfitter
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Campfire Outfitter
Joined: Sep 2004
Posts: 8,037 |
Never owned one before and picked one up to sharpen my flail mower blades. The grinding wheel I picked up is threaded (Milwaukee guy at the big box store recommended it) Far as I can tell I shouldn't be using the flange or flange nut with this wheel. Arbor isn't long enough even it I wanted too. In RTFM all it says about threaded hub wheels is that I might need a deeper guard. Nothing about particulars on them. Problem is that the wheel will spin off, which is fun. Am I just not getting the wheel on there tight enough or is there a trick? Every angle grinder I ever used, the wheel spun on opposite to direction of rotation. So in operation, the wheel just wants to get tighter and tighter. I lock the shaft, and tighten the wheel firmly by hand. Then I usually have to find a wrench to remove it. If my mower blade is not too screwed up, I like to use a sanding disc to sharpen it. It cuts a lot slower, does not nick the blade, and is less likely to burn the temper out in places. bingo
Your Every Liberal vote promotes Socialism and is an attack on the Second Amendment. You will suffer the consequences.
GOA,Idaho2AIAlliance,AmericanFirearmsAssociation,IdahoTrappersAssociation,FoundationForWildlifeManagement ID and MT.
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Joined: Jan 2009
Posts: 5,249
Campfire Tracker
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Campfire Tracker
Joined: Jan 2009
Posts: 5,249 |
Good choice of wheel. One of the best. As stated this wheel only has to be screwed on to the arbor. If it's flying off. you're not getting it tight enough. The flange nut is only used if the wheel doesn't have threads. Like on the skinny wheels used for cutting.
I could wish a lot of things on my worst enemy but neuropathy ain't one of them.
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Joined: Jan 2009
Posts: 5,249
Campfire Tracker
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Campfire Tracker
Joined: Jan 2009
Posts: 5,249 |
And I hope you got a grinder with a paddle switch.
I could wish a lot of things on my worst enemy but neuropathy ain't one of them.
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Joined: Jun 2007
Posts: 29,791 Likes: 2
Campfire Ranger
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Campfire Ranger
Joined: Jun 2007
Posts: 29,791 Likes: 2 |
Interesting, first I have seen with an included thread.
These are my opinions, feel free to disagree.
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Joined: Nov 2010
Posts: 19,098 Likes: 4
Campfire Ranger
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Campfire Ranger
Joined: Nov 2010
Posts: 19,098 Likes: 4 |
Interesting, first I have seen with an included thread.
Type 27. There’s several different styles. Unless blades had some rock damage, I’d use a flapper wheel.
Dave
�The man who complains about the way the ball bounces is likely to be the one who dropped it.� Lou Holtz
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Joined: May 2021
Posts: 177 Likes: 1
Campfire Member
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Campfire Member
Joined: May 2021
Posts: 177 Likes: 1 |
I've never seen a mower blade without rock nicks.
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Joined: Jan 2006
Posts: 69,537 Likes: 24
Campfire Kahuna
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Campfire Kahuna
Joined: Jan 2006
Posts: 69,537 Likes: 24 |
Never owned one before and picked one up to sharpen my flail mower blades. The grinding wheel I picked up is threaded (Milwaukee guy at the big box store recommended it) Far as I can tell I shouldn't be using the flange or flange nut with this wheel. Arbor isn't long enough even it I wanted too. In RTFM all it says about threaded hub wheels is that I might need a deeper guard. Nothing about particulars on them. Problem is that the wheel will spin off, which is fun. Am I just not getting the wheel on there tight enough or is there a trick? It says it's a 5/8-11 thread and it'll be right handed. That's standard as far as I know. As said before, hand tighten it and the rotation will snug it up. When sharpening any blade, GO SLOW. Don't get it hot enough to turn black. That will ruin the temper and it won't hold an edge after that. I'm no expert on steel. Maybe someone who is will tell us the best way to do it.
“In a time of deceit telling the truth is a revolutionary act.” ― George Orwell
It's not over when you lose. It's over when you quit.
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Joined: Sep 2011
Posts: 61,320 Likes: 34
Campfire Kahuna
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Campfire Kahuna
Joined: Sep 2011
Posts: 61,320 Likes: 34 |
These premises insured by a Sheltie in Training ,--- and Cooey.o "May the Good Lord take a likin' to you"
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Joined: Dec 2005
Posts: 2,943 Likes: 1
Campfire Regular
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Campfire Regular
Joined: Dec 2005
Posts: 2,943 Likes: 1 |
I use a flapper wheel - 40 grit. Does a great job on bush hog blades.
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Joined: May 2002
Posts: 15,634 Likes: 4
Campfire Ranger
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Campfire Ranger
Joined: May 2002
Posts: 15,634 Likes: 4 |
The sanding disc will move metal as fast or faster than a solid rock disc, and produce as much heat. Guys in the metal trades call them a "Tiger Paw"
It does produce a smoother finish.
I wanna guess that 99.9 percent of the electric grinders I've used were made by Metabo, Dewalt, or Milwaukee. 4 1/2", 6", 7" and 9" all have the same arbor, and will all take the same threaded center disc
There will be a shaft/wheel lock on your grinder. depress it and spin your disc on snugly. If the disc comes off your motor is turning backwards. From the top. looking down it should turn to the right, or clockwise.
"Chances Will Be Taken"
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Joined: May 2002
Posts: 15,634 Likes: 4
Campfire Ranger
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Campfire Ranger
Joined: May 2002
Posts: 15,634 Likes: 4 |
And I hope you got a grinder with a paddle switch. Locking switches on a grinder are just maybe the most wrongly maligned item in the construction world. Give an idiot a grinder and he will hurt himself sooner or later, regardless of switch style. It is easy to demonstrate that the paddle switch is more dangerous in some positions used in normal grinding operations
"Chances Will Be Taken"
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Joined: Jan 2006
Posts: 69,537 Likes: 24
Campfire Kahuna
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Campfire Kahuna
Joined: Jan 2006
Posts: 69,537 Likes: 24 |
My grinder is an old Craftsman, labeled 'MADE IN USA'. That's before they labeled them Mattel. I've probably had it 40 years or more and it's still working great. It has a switch.
“In a time of deceit telling the truth is a revolutionary act.” ― George Orwell
It's not over when you lose. It's over when you quit.
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Joined: Jan 2010
Posts: 9,646 Likes: 2
Campfire Outfitter
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Campfire Outfitter
Joined: Jan 2010
Posts: 9,646 Likes: 2 |
As stated above use safety gear a specially eye protection. I have been using grinders for over 45 years. They are more dangerous than a lot of other power tools Eye protection is the most important of all It is very unnerving watching a doctor with a hand held dremal coming towards your eye while you watch. I personally know how that is. I got a sliver in the center of my pupil from a grinder. I was wearing my eye glasses to see with and a welders hood for eye protection and still got a dart in the eye. Long sleeve cotton shirt and gloves. No nylon
If it was my project. I would start with the hard wheel and finish the job up with a flapper disc Flappers are expensive compared to the hard discs. Once you use a grinder you will be looking for more things to grind up and destroy they can be fun to use at times.
It looks like the salesman led you right Good luck with your project
Last edited by funshooter; 07/03/21.
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Joined: Jan 2021
Posts: 5,569
Campfire Tracker
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Campfire Tracker
Joined: Jan 2021
Posts: 5,569 |
I use a flapper wheel - 40 grit. Does a great job on bush hog blades. This 👆🏻
ΜΟΛΩΝ ΛΑΒΕ
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Joined: Jan 2006
Posts: 4,714 Likes: 2
Campfire Tracker
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Campfire Tracker
Joined: Jan 2006
Posts: 4,714 Likes: 2 |
Take it back and exchange it for a non-threaded 4.5" wheel, 1/4" thick, with a 7/8" arbor hole. That way you can use the spacer flange and nut that come with the grinder and save your self a $1 or $2. The threaded type, like you have pictured, cost more. Get a 4.5" 60 grit flap wheel, with 7/8" arbor hole (non-threaded) also.
Last edited by Lonny; 07/03/21.
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Joined: Jan 2004
Posts: 11,417 Likes: 2
Campfire Outfitter
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Campfire Outfitter
Joined: Jan 2004
Posts: 11,417 Likes: 2 |
Is it unthreading while under power? Or when power is removed?
As said above, Under power should be self tightening.
I’ve seen them when not snugged up, and a wheel with some mass, unthread itself when the paddle is released. Simple matter of just snugging it up.
I never use a tool to tighten. Only for removal.
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