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  1. #1
    Join Date
    Aug 2010
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    Default Grinding wheel review

    On PM, someone made a passing remark about 3M Cubitron II grinding disks lasting the longest....
    So I did some googling and found some in AUS. https://www.ebay.com.au/itm/252944739652
    Pretty expensive I thought, but if they last, then it might be worth the expense for a trial....
    I've been using the ONE disk for about 2 months now. Some pretty heavy work (cleaning up plasma severance cut steel plate, cleaning up welding beads etc etc. Giving it a pretty hard time.
    The result so far is that it seems to have reduced very little in thickness and NOT AT ALL in diameter. I'm pretty amazed. It seems to cut MUCH faster than cheap grinding disks and with less force applied to the grinder.
    Just thought I'd pass that on - only because I'm impressed myself.
    Anyone else ever used these?
    Cheers, Joe
    retired - less energy, more time to contemplate projects and more shed time....

  2. #2
    Join Date
    Aug 2011
    Location
    Melbourne
    Posts
    4,779

    Default

    No, but now I'm interested!

    Thanks Joe.
    Girl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.

  3. #3
    Join Date
    Aug 2006
    Location
    Melbourne
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    1,105

    Default

    Yeah these things are great, I go through one of these every few weeks. They don't clog up like the standard ones do. When they are new you need to be very careful as they can take off more than needed. They are expensive, but work pays for them.

    When at home I just use whatever is cheapest as I don't do a lot of grinding here.

    If you get a chance try out one of these! https://www.3m.com.au/3M/en_AU/compa...3241514&rt=rud

  4. #4
    Join Date
    Aug 2010
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    Near Bendigo, Victoria, AUS
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    Default

    I'll try to get some. I also noticed that flap disks are available with the cubitron grains.... ever used those?
    Cheers, Joe
    retired - less energy, more time to contemplate projects and more shed time....

  5. #5
    Join Date
    Jul 2012
    Location
    Malvern East
    Posts
    84

    Default

    Yes they are exceptional discs and flap wheels wait till you get some linishing belts though they are the next level they never clog up always sharp right till the end

  6. #6
    Join Date
    Aug 2006
    Location
    Melbourne
    Posts
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    Default

    I haven't used a flap disc in about 10 years probably, don't think work even stocks them. I don't really see the benefit in them.

    Yeah finishing belts would be a good thing I reckon, wouldn't mind trying some out.

  7. #7
    Join Date
    Nov 2010
    Location
    Gippsland Victoria
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    733

    Default

    Could they be used on toolsteel i.e. hss lathe bits

  8. #8
    Join Date
    Aug 2010
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    Near Bendigo, Victoria, AUS
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    Default

    Quote Originally Posted by steamingbill View Post
    Could they be used on toolsteel i.e. hss lathe bits
    I don't see why not. The cutting grains are a ceramic material. The clever thing by 3M was finding a way to electrostatically make all the grains stand up with their sharp corner pointing outwards while they were being embedded in resin...
    Cheers, Joe
    retired - less energy, more time to contemplate projects and more shed time....

  9. #9
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
    Posts
    6,439

    Default

    Hi Joe, Guys,

    I've a number of those 3M disks, that I got a while back. So far I've never used them, I'll have to get them out and have a look at them.
    Best Regards:
    Baron J.

  10. #10
    Join Date
    Oct 2007
    Location
    Sydney
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    3,112

    Default

    Quote Originally Posted by Com_VC View Post
    I haven't used a flap disc in about 10 years probably, don't think work even stocks them. I don't really see the benefit in them.
    They leave a softer edge on work. Better for cleaning up surfaces, removing scale etc vs grinding away material. I'm the opposite, don't use wheels anywhere near as much as flap disks.

  11. #11
    Join Date
    Aug 2006
    Location
    Melbourne
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    Default

    I just found because of the curved design that it was easy to removal material where not needed. I much prefer an orbital sander and rolocs for finishing type work.

    By the way for anyone who hasn't used these things before, they work great for paint and rust removal. 5 x 125MM POLY STRIPPING DISC WHEEL PAINT RUST REMOVAL CLEAN METAL ANGLE GRINDER | eBay

  12. #12
    BobL is offline Member: Blue and white apron brigade
    Join Date
    Feb 2006
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    Perth
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    7,182

    Default

    Quote Originally Posted by Pete F View Post
    They leave a softer edge on work. Better for cleaning up surfaces, removing scale etc vs grinding away material. I'm the opposite, don't use wheels anywhere near as much as flap disks.
    I'm also a big fan of flap sanders - I have 6 grinders but none have a grinding wheel on them.

  13. #13
    Join Date
    Apr 2010
    Location
    Warwick QLD
    Age
    53
    Posts
    26

    Default

    I can't say I don't use grinding wheels, they're handy for inside corners & areas where a flap disc would be destroyed; the downside is they can be expensive; lately, I've been using these which aren't too bad...

  14. #14
    Join Date
    Oct 2007
    Location
    Sydney
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    Default

    Quote Originally Posted by Com_VC View Post
    I just found because of the curved design that it was easy to removal material where not needed. I much prefer an orbital sander and rolocs for finishing type work.

    By the way for anyone who hasn't used these things before, they work great for paint and rust removal. 5 x 125MM POLY STRIPPING DISC WHEEL PAINT RUST REMOVAL CLEAN METAL ANGLE GRINDER | eBay
    I'm not sure what you mean by the curved design? They're round of course, but are either flat or with a bevel on the working face. They do tend to wear roundish, however I've never found that an issue in hitting the correct spot.

    I agree, the stripping disks are also good, but I find they don't last as long, and generally aren't as aggressive as a typical flap disk (depending of course on the grit used in each).

  15. #15
    Join Date
    Aug 2006
    Location
    Melbourne
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    Default

    The ones I used had a bevel or maybe they were just worn out. I should try some again. Smith & Arrow have some Ceramic ones. https://www.ebay.com.au/itm/5x-125mm...7pUOl01uReh3RA

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