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Technical Good quality pneumatic angle die grinder?

Discussion in 'The Hokey Ass Message Board' started by tjcmiller1, May 21, 2021.

  1. I bought a nice one at NAPA awhile back. The Granger one I had finally gave out after years of use. It happened to be the week NAPA had it on sale.


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  2. The thing I see between good and cheap air powered die grinders is air consumption and noise .

    THE CHEAP ONES ARE NOISY!!!!!!

    I got a snap on straight and 90* die grinder, they have to be 20 years old and still take a beating.

    I have bought a bunch of cheap Mac tools and blue point grinders they usually last a few years unless you really beat on them ( extended use or using long shaft bits )

    I’ve bought the cheap princess auto ones but I find them very loud ,

    Jet males a nice die grinder and a good price point ( not princess auto prices but not snap on prices either, maybe a few buck more them Lowe’s or Home Depot junk)

    I guess it all depends what you want out of the tool .
     
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  3. mohr hp
    Joined: Nov 18, 2009
    Posts: 527

    mohr hp
    Member
    from Georgia

    Being an airline mechanic, I got spoiled using the Company Dotco die grinders. They're smooth and incredibly rugged. See if you can find a used one. I was at a flea market 2 summers ago, a guy had milk crates full of air tools, including a Dotco high speed. He says $20. I couldn't pull the money out fast enough.
     
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  4. alchemy
    Joined: Sep 27, 2002
    Posts: 18,868

    alchemy
    Member

    I asked the same question in a thread a few years ago. I have a half dozen pneumatic straight die grinders that some were purchased new, and some used at swap meets. All kinds of brands and quality. But they work just fine and each one has a different disc or bit in it.

    Finding an angle die grinder was much harder as they are either super cheap or super expensive. And never sold at swap meets. Almost. I just found one for $10 two weeks ago and so far it seems to be working fine. It has no name on it, but it's blue, and probably ten years old. I cleaned it and oiled the heck out of it, then put a roloc mount in it. Fingers crossed.
     
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  5. saltflats
    Joined: Aug 14, 2007
    Posts: 11,577

    saltflats
    Member
    from Missouri

    You need to grease the gears in the 90 degree head often.
     
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  6. At $700 for a angle-head diegrinder I can buy a hell of a lot of HF ones, more than I can wear out in my lifetime... I'm not that crazy.... LOL
     
  7. old chevy
    Joined: Nov 24, 2007
    Posts: 50

    old chevy
    ALLIANCE MEMBER

    I have a Husky from Home Depot that has worked for at least 6 years with no problems. It has been no problem with a lot of abuse. Air pressure is set at 90 psi with moisture trap. It is quiet to use. I tried a cheap one and it sounded like a jet engine and lasted one day. In the trash it went.
     
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  8. Deuces
    Joined: Nov 3, 2009
    Posts: 22,426

    Deuces
    Member
    from Michigan

    I have one also... Just for that job!... Porting cylinder heads....:)
     
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  9. 1great40
    Joined: Jan 1, 2008
    Posts: 475

    1great40
    Member
    from Walpole MA

    Sadly, I must admit that I wore out a beautiful Dotco. The repair parts were so spendy that I just left the thing apart on my bench wondering if I should fix it or not.
    Well, cheapness got the better of me and I bought a HF, noisy as all get out and it didn’t last long. I got an IR on Amazon and all is well. Kinda wish I fixed the Dotco though.


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  10. For the $$$ it’s hard to beat the Astro Onyx. 4 years+ of heavy work and mine still going strong.
     
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  11. The stuff I bought in the early 90s is still going except for an air hammer I busted. Mac,Viking, CP.
    but I also have a Chinese straight angle grinder I bought at the flea market around 1990. Still going.
     
  12. gimpyshotrods
    Joined: May 20, 2009
    Posts: 21,888

    gimpyshotrods
    ALLIANCE MEMBER

    I buy used stuff all of the time at a place in Kansas called Yard Store. https://www.yardstore.com/surplus

    I have never had an issue with anything from them. Their stock changes, so you need to keep checking.

    They often have Dotco stuff.
     
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  13. bigdog
    Joined: Oct 30, 2002
    Posts: 725

    bigdog
    Member

    A few years ago a I bought a cheap Performance Tool brand angle die grinder. Out of the box it leaked around the throttle valve. I took it back the next day and got an Ingersol Rand. Night and day difference in the performance and the feel of the tool. I knew better than to buy cheap, but once in a while I get stupid. I've never been disappointed in the long run by spending more for quality.
     
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  14. badshifter
    Joined: Apr 28, 2006
    Posts: 3,468

    badshifter
    Member

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  15. Mike Colemire
    Joined: May 18, 2013
    Posts: 1,410

    Mike Colemire
    Member

    I have a higher grade HF and it has lasted a long time. I stripped out a couple of cheaper ones and Crazy Steve is right, both of them loosened up and caused it. I just watch and catch the good ones on sale. I have one of their 4.5 electric grinders I use their cutting blades on, I got a warranty on it and had it replaced once but I'm hard on it.
     
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  16. 51box
    Joined: Aug 31, 2005
    Posts: 1,061

    51box
    Member
    from MA

    Dynabrade is what you want for pneumatic tools. I have both a straight and angle die grinder from them and they are just better all around. Quite, more power etc.
     
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  17. triumph 1
    Joined: Feb 9, 2011
    Posts: 587

    triumph 1
    Member

    I’ve had my blue point for 20 years
    No problems yet.....


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  18. nutnfits
    Joined: Jun 6, 2020
    Posts: 32

    nutnfits

    HF are cheapo tools ,but I bought an electric straight die grinder about 15 yrs ago. Use it with carbides and 3” cut off wheels. It doesn’t get used everyday but it’s done a lot of work over the years. I like the electric ones rather than running the air compressor for small jobs.
     
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  19. blue 49
    Joined: Dec 24, 2006
    Posts: 1,626

    blue 49
    Member
    from Iowa

    I don't have any idea how old my right angle die grinder is, or what brand it is. Might be HF but more likely, I got it at one of the "traveling tool sales" that used to come around. Homier was one. It's been used and abused for a long time. My best and favorite in line die grinder is an American made Black & Decker I got used about 40 years ago. I can't imagine how old it must be.

    Gary
     
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  20. stanlow69
    Joined: Feb 21, 2010
    Posts: 6,734

    stanlow69
    Member

    Never had an angle die grinder.
     

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