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Thread: Lets talk Flap Disks

  1. #1
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    Lets talk Flap Disks

    I just received an order from lehighvalleyabrasives.com. I ordered a few grinding disks, wire wheels, and 2 each of all of their brand, flap disks. All of my welding gear is in storage at my side job. I've been so busy with my day job, I don't have time for side work. So, I just bought a 6" Dewalt for cutting, a 4.5" Dewalt for grinding, wire and flap, and a Dewalt straight die grinder. I needed these for doing shtuff around the house. Like I said, all my grinders are locked up.

    When I grab a flap disk, I don't think much about it. If I'm cutting dirty metal or bevelling, I grab a course one. If I'm sanding or smoothing, I grab a fine one.

    I would like to know other's opinions on grit for various uses? If you prefer conical v. flat, advantages v. disavantages?

    I don't particularly want to discuss brands, as that has a lot of previous discussion. And until they do me wrong, I will pretty much buy from Lehigh Valley.
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  3. #2
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    Re: Lets talk Flap Disks

    I think 60 grit is the best trade-off for aggressiveness vs life. The coarser grits seem to have short life. I don't really buy any finer grit ones, I use a worn one to get a finer finish. The saucer shaped ones seem to perform better but are generally harder to find and more expensive.

  4. #3
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    Re: Lets talk Flap Disks

    I buy the same stuff. I have found the 40 git works well as a coarse cut disk that leaves an acceptable finish. I only buy the conical, the flat wears too much and too quick on the outer edge. FWIW, I spend the extra buck for the nut on each one, well worth it.

  5. #4
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    Re: Lets talk Flap Disks

    I use flap discs frequently and like the angled ones since it seems the angle is more natural. I try to buy the ones that allow you to trim the back side to use more of the disc. I also use both coarse and finer grits on my sculptures. The big thing for me is to remember not to use the flap disc on freshly welded or very hot metal since that seems to glaze or burn the disc.
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  7. #5
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    Re: Lets talk Flap Disks

    Quote Originally Posted by psacustomcreations View Post
    The big thing for me is to remember not to use the flap disc on freshly welded or very hot metal since that seems to glaze or burn the disc.
    I think THAT would be one of my first suggestions. I wish I had caught on earlier!!!


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  8. #6
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    Re: Lets talk Flap Disks

    I use the Lehigh I think they are 40 grit but I get the xl { I think } they are the thick one and they are flat but I grind a lot of rusty pipe heavy rust and they grind it off faster then grinding wheels the thick ones last pretty well even on heavy grinding

  9. #7
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    Re: Lets talk Flap Disks

    Been tempted to try those lehigh valley ceramic flap discs, but each time I use my 3M Cubitron 967A #56475 reminds me I don't need to be switching brands
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  10. #8
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    Re: Lets talk Flap Disks

    Price wise I think they are a good value i don’t do a lot of finish work so grinding pipe saddles and paint $ for $ I think they are a good deal

  11. #9
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    Re: Lets talk Flap Disks

    I have been buying Klingspor 60 grit by the box of ten since the late 80s.
    But I have a grinder with a hard whell on it, right next to the grinder with the flap.
    Hit it first with the hard wheel, take away the bulk of it, then use the flap wheel for the finishing and contouring.

  12. #10
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    Re: Lets talk Flap Disks

    Off topic a little.

    You can get a free pack from Benchmark Abrasives. Use the discount/promo code freemix at checkout. Just pay shipping.

    https://benchmarkabrasives.com/produ...d-grit-10-pack

    I got a pack but have not even used them yet.

    Steve

  13. #11
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    Re: Lets talk Flap Disks

    Quote Originally Posted by Stick-man View Post
    I just received an order from lehighvalleyabrasives.com. I ordered a few grinding disks, wire wheels, and 2 each of all of their brand, flap disks. All of my welding gear is in storage at my side job. I've been so busy with my day job, I don't have time for side work. So, I just bought a 6" Dewalt for cutting, a 4.5" Dewalt for grinding, wire and flap, and a Dewalt straight die grinder. I needed these for doing shtuff around the house. Like I said, all my grinders are locked up.

    When I grab a flap disk, I don't think much about it. If I'm cutting dirty metal or bevelling, I grab a course one. If I'm sanding or smoothing, I grab a fine one.

    I would like to know other's opinions on grit for various uses? If you prefer conical v. flat, advantages v. disavantages?

    I don't particularly want to discuss brands, as that has a lot of previous discussion. And until they do me wrong, I will pretty much buy from Lehigh Valley.
    I do not use many flap discs if I do it is for blending on stainless pipe sometimes steel, and even then I find myself using a three-inch Roloc disc in the Milwaukee high-speed right angle die grinder usually. But I do buy them and I use them in my 4 1/2" Milwaukee right angle grinder, I get them from these guys, I get the zirconium discs. I tend to buy the angle ones which seem to make it easier to grind into tight places but either one is ok by me for what I do with it.

    https://www.empireabrasives.com/flap...and-polishing/

    I like their stuff. Their cutters especially the 4 1/2" 0.040 cutters are great, I have yet to shatter one while using it which is remarkable. I smashed one in the truck transporting it and I used it anyway after bending it back and it still didn't shatter, haha. I am not recommending you do that.

    Sincerely,

    William McCormick
    If I wasn't so.....crazy, I wouldn't try to act normal, and you would be afraid.

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  15. #12
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    Re: Lets talk Flap Disks

    I saw these on another website this morning

    Looks like they do a pretty good job for finish work.


    Norton Bear-Tex Depressed Center Vortex Rapid Finish Unified Nonwoven Abrasive Wheel, Type 27, 4-1/2" Diameter, 5/8"-11 Arbor, Grit 5AM (Pack of 1) https://www.amazon.com/dp/B006P3OYZS..._aZzcGbN3VK38Q
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    Re: Lets talk Flap Disks

    Quote Originally Posted by John T View Post
    I saw these on another website this morning

    Looks like they do a pretty good job for finish work.


    Norton Bear-Tex Depressed Center Vortex Rapid Finish Unified Nonwoven Abrasive Wheel, Type 27, 4-1/2" Diameter, 5/8"-11 Arbor, Grit 5AM (Pack of 1) https://www.amazon.com/dp/B006P3OYZS..._aZzcGbN3VK38Q

    Pack of 1. Amazon with shipping to Canada. I don't think so.... LOL


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  18. #14
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    Re: Lets talk Flap Disks

    Quote Originally Posted by Lis2323 View Post

    Pack of 1. Amazon with shipping to Canada. I don't think so.... LOL


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    Oh come on Lis... that's got to be some very special shipping for that price!!! I'm sure it's worth it.!!!!


    Just got an order from benchmark the other day... had a little card in it... you really think there is a guy named Harry Pitts there?

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  20. #15
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    Re: Lets talk Flap Disks

    Quote Originally Posted by ronsii View Post


    you really think there is a guy named Harry Pitts there? ]
    His cousin is Mike Hunt.
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  21. #16
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    Re: Lets talk Flap Disks

    Sure, I had a 3rd shift supervisor at one gig whose name was Harry Beavers. I guess parents can be oblivious or cruel.

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  23. #17
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    Re: Lets talk Flap Disks

    I went to school with a kid whose last name was Bater

    The shop teacher used to call him Master Bater

    Today that would probably not be PC
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  24. #18
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    Re: Lets talk Flap Disks

    Quote Originally Posted by bplayer405 View Post
    Sure, I had a 3rd shift supervisor at one gig whose name was Harry Beavers. I guess parents can be oblivious or cruel.

    Sent from my SM-G973U using Tapatalk
    His father was Jack Meoff.

    We used to send one of the guys we would take on our company skiing trip to the reception desk at the ski lodge and have him page "Mr. Meoff, Jack" to the main lounge. The whole place would roll and the girl would turn red at the desk. Most did not get it the first time but by the second time, everyone was listening to see if they heard it correctly. To hear her say Jack me off to the main lounge was too funny.

    Once in the sixth grade, there was an older woman a handwriting expert who asked us to write our name on a piece of paper, it was a rain day auditorium event. I signed Dick Hertz. She analyzed it and started saying "Who's Dick Hertz?" again and again, only interrupted by "what is so funny" finally a person from the school suggested it was a joke, haha, she turned red and reprimanded everyone.

    Sincerely,

    William McCormick
    If I wasn't so.....crazy, I wouldn't try to act normal, and you would be afraid.

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  26. #19
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    Re: Lets talk Flap Disks

    And down the rabbit hole we go....one of my first loan managers was a very nice woman named Miss Pryck. A little stiff, but not hard to work with at all...
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  28. #20
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    Re: Lets talk Flap Disks

    How would you like a dentist that goes by the name of Dr. Hurt ?

    .

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  30. #21
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    Re: Lets talk Flap Disks

    I could introduce you to Harry Dyck.... and his cousin Peter Dyck, which seemed very repetitive to me...
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  32. #22
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    Re: Lets talk Flap Disks

    Quote Originally Posted by whtbaron View Post
    I could introduce you to Harry Dyck.... and his cousin Peter Dyck, which seemed very repetitive to me...
    Aren't they related to Ben Dover?
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  34. #23
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    Re: Lets talk Flap Disks

    I saw my buddy Jack at the airport the other day.... So I yelled to him:Hi Jack!!! and a bunch of cops slammed me to the ground

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  36. #24
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    Re: Lets talk Flap Disks

    Quote Originally Posted by ronsii View Post
    I saw my buddy Jack at the airport the other day.... So I yelled to him:Hi Jack!!! and a bunch of cops slammed me to the ground
    You talkin’ ‘bout the cowboy? Did you help your buddy Jack off his horse?


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  38. #25
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    Re: Lets talk Flap Disks

    I went over this whole thing with a flap wheel a thirty-six grit from these guys.

    https://www.empireabrasives.com/flap...and-polishing/

    I had a lot of weld-spatter inside that thing, the #29 style 36 grit 4 1/2" Zironcium flap discs not only tore it off, but one disc did all the grinding, and then I went over everything and the flap is still good. Worn but still cutting like new. The metal feels as soft as butter now.

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    Sincerely,

    William McCormick
    If I wasn't so.....crazy, I wouldn't try to act normal, and you would be afraid.

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