Best Flap Disc Brand (6 Brands Tested)? Let's find out! 

Thank you all very much for suggesting this video on flap discs. Please let me know if you'd like a round 2 video as well as which brands. Thanks again and best regards, Todd Products Tested In This Video (in no particular order): Diablo: amzn.to/2EnI8NA Walter: amzn.to/3iZFdta DeWalt: amzn.to/2CQy2V1 Makita: amzn.to/31kkBWP Norton: amzn.to/3giwAZe Warrior: bit.ly/3aUjGPV

This guy really puts an extreme amount of effort into these tests/videos. Keep it up man

........what have I learned from watching 19,000 of these videos? Diablo generally makes good shit.

I love the fact that you always include harbor freight items

Bro, you’ve more than earned those subscribers. I legitimately buy things based on your testing.

Thank you for your dedication to helping us make educated purchases

These episodes are GOLD ⛏️💛

you are raising the bar for youtube content my dude. thank you.

Anyone else start watching this guy by mistake....... Two days on and I think I have watched everything, love the way he has thought of everything about testing lol I'm sure the big names he test haven't got him on there Christmas card list

The testing rig you made is very impressive.

If I was a dodgy manufacturer I’d be scared of you!

*DO A WORK GLOVE TEST* some gloves resist heat better which one would be the best for the best price

If this guy lived in the UK I would be nominating him for a knighthood, absolutely incredible that he does all these tests from his own pocket, total and utter legend. Without doubt the best channel on RU-vid

I do a lot of body work panels and make various things out of 1/8" stock. I grind the weld first with a 36G grinding wheel then blend with 60G or 80G flap wheel. I do in some cases use the 36G as well. The Harbor Freight ones are just about useless. I generally buy Norton which work pretty good but I will try the Diablo. Like another guy wrote " Diablo makes good S#*t" I wonder if your experiments are better than the manufacturer. They seem more real world to me. Great job as always!

I trust this channel so much, you've gotta love how objective he is. Mad respect for his methods and many thanks for the time put into making these videos.

Everytime I watch a new clip of Project Farm it reamazes me how your simple but brilliant solutions make a perfect testing gear.

A useful video may be the best engine parts cleaner/degreaser.

Test windshield wipers see which is the best brand

Congratulations on hitting 500k subscribers, you absolutely deserve it. 👍

I really like that you use different weights and times. I have found from using these products at work for 30 years that any grinding, cutting, and sanding disc it is best to let the disc do the work and not force it. They last longer even though they may cut a bit slower. You may be cutting slower, but by the time you stop to change wheels the total time ends up quicker. Also you put less stress on the tool which lasts longer too.

I've got the same feeling about Dewalt. They have some great, durable tools. But your videos show their consumables to seriously lack in price/quality.

I appreciate you taking such pains to make the results clear even when you’re cautious of calling anyone an outright winner. Telling us YOUR conclusions is invaluable. Thanks

Sir, your channel is one of maybe 3 that I watch every video put out.

I think abrasive material should be a consideration for the test. From my info gathering there are 3 types: aluminum oxide, Zirconia/Zirconium and the newest Ceramics. A revision and new players on the field should make and excelent test. Also there are 2 types of flap discs Type 29 and Type 27. Thanks for all the hard work.

Hands down one of the most informational channels on RU-vid.

Loved the video Todd! The best testing channel on RU-vid!

I've been trying to get humans (ME) out of the Work process for years, has not worked yet...............LOL

Another outstanding comparison. The last two flap discs I bought were Dewalt and they were just as you say, overpriced and so-so performance. I’m not a big dewalt fan due to a bad experience with an expensive hammer drill that was hardly used and just outside the warranty it decided to let out the blue smoke. After being denied warranty I took it apart and it was a clear manufacturer defect. Improper assembly caused wires to get pinched and the insulation was damaged just enough to short circuit. When shown photos, dewalt basically gave me the middle finger. I now buy Makita drills and hypoid saws, Milwaukee grinders, Bosch routers, Sanders, and table saws. I’m going to buy a flap disc tomorrow and will be going with diablo.

So once again Diablo is making some great products. Should have known!

So many of your videos are brilliant... I love the way you design these tests... you are worth a comment and a thumbs up! Thank you...

another vote for drywall anchor testing, the plastic and metal screw type in 1/2" drywall

I appreciate the amount of work and money you put into these. You’re always my first stop when I need to know!!

The only thing I’d like to see is when you do the final review, add a graphic like you do for costs, wear, etc add an overall ranking on first place thru last place when your speaking. I hope that makes sense. I’m nit picking. Your videos are awesome. You do amazing work. I’m happy to watch them and support you how I can. Thanks for what you do.

From my experience, these wheels seem to be cutting WAAYYY less than I'm used to for a 40 grit. Could be the pressure, the way the steel is rotating, or another factor. I love the videos! Keep them coming!

I want you on my "Zombie Apocalypse" team. "We're gonna take humans out of the equation, what I've got rigged up here is an automatic zombie decapitation device. We'll be testing which mall store katana will work the best, vs these equally dull Home Depot and Harbor Freight machetes." *no sponsors, all equipment was purchased with my own personal food rations, and hand-collected zombie teeth.

I probably would have never thought Diablo was this good if I didn’t start watching project farm years ago.Thanks for his in depth reviews and honest opinions I feel like we can all trust that he’s telling us the truth 🙏.I really can’t speak for others but I trust his information on everything he reviews and that’s why I come here before purchasing anything!Thanks for staying true to us and not taking that extra few dollars to lie to us…and I mean this genuinely!

On the road to 1million project farm! You are the best!

I've watched your channel grow from the beginning to now almost 2 million and it's crazy how you have been so thorough with your reviews.

Mans built a whole rube golberg machine to test, most dedication of any RU-vidr I’ve seen

These tests are extremely helpful. Just shows that all name brand items or products are better than the cheaper ones. Thank you Todd!

I love your videos man, they're so relaxing. I dont even own any powertools but I love watching this.

DeWalt flap disc cost twice what it’s worth........ just like every other DeWalt product. Great video Project Farm, thank you!

Great video! Idea for the future: you should test commercial degreasers against dawn dish soap!

PF, Hello, but when I saw this with the description, I thought what odd disks, for disk brakes, SA I busted out in LAUGHTER as I saw these. I did REFRIGERATION WORK, & had to REPAIR the fan brackets for frozen food cases , when the busted up , with blocked drains, I carried about 100, different fan blades, but very few brackets, it was hard cleaning with a file , to braze them, so bought a small angle grinder , using a grinding wheel, so quickly clean the sink coating off to braze, & that was the ONLY use I had for the grinder . Cheers From NJ USA. 🇺🇸🇺🇸🇺🇸🇺🇸

Interesting test to see how flap discs hold up relative to each other on rust/scale.... In general if you want to extend the life of any flap disc or sanding disc always remove the rust & scale surface first with either a grinding wheel, sandblasting, rust dissolver/ acid or (my preferred method) a diamond grinding wheel. Iron oxide is quite high on the Mohs hardness scale, & is an abrasive in its own right, Emery powder. You can see how glazed the edges of each flap are after the second test, & why they don't cut nearly as well in the 2 min test. Once you get to clean steel a fresh flap disc or sanding disc will cut beautifully.

Yours have to be the most useful videos on RU-vid. Seriously.

Thanks for your test results. They help in deciding which products works with the type of job your doing. Nice job!!!

You are by far the best @ these comparison videos. No unnecessary banter that doesn't pertain to the video. Straight to business right out of the gate. Some of these people feel like they have to tell us what the weather is like where they are at, what they had for breakfast, etc. etc. blah blah blah. Who cares!? I dont. Well done sir!

I'd love to see you test out wire wheels. Either on grinders or drills or both.

My wife has some flaps that won't wear out and believe me I've tried. Lol 👍 🇬🇧

Hi! Cheers from Portugal, I love your videos! Can you make a video testing heat resistant spray paint? Thank you and keep your awesome work!

Great job of objectively testing, comparing and summarizing the results of your test from a mechanical engineer with 40+ years of automotive experience.

Could you do a vid comparing diesel anti gel products like 911, Howes diesel treat and others. Great vid as always

all of your tests are so elaborate and well thought out, thank you for all the hard work you put into your videos i'm always looking forward to the next one!

Again Diablo did well. The Harbor Freight I buy in a mixed 10 pack and get 3 of these flaps under $10. It makes the warrior ones even cheaper worth it at that price.

I remember watching your first video and thinking, ‘holy crap this guy is as nerdy as me’. I watch these whenever a new one comes out. Thank you for making genuinely interesting content.

We can all thank Robert Bosch a German engineer, and his amazing R&D team for all the amazing products. Also he's worth almost 100Billion for a reason. Great quality products, priced accordingly. Diablo products rock!

I'm offended because this test came across as a bit - abrasive - to me. ...(big sigh)... (looking down, slightly shaking my head no)...I know... Just kidding, of course. Well done and thanks for showing us the better deals!

This is the most efficient/ informational/ practical/ channel on RU-vid!

Those graphs at the end are such powerful information.

Thank you for putting so much effort and time in those tests amazing, greetings from Germany

Great video, thanks. How about standard belts for a 3" X 21" belt sander ? I find that on some, the glue strip splits before the belt gets worn. J K

We very much like Walter and Norton flap discs at our large tool and die shop. We don't use them as extensively as you ladies and gents in fabrication but those two brands are what we found to be the best for our needs. Personally, I just like Diablo because it's on sale often and performs.... well, as you've shown above. :) Cheers, Todd! Thanks for all you do!

you forgot to mention that the warrior wheel almost always has a coupon making it only $.99

Your awesome man been binge watching ur channel the past 8 hrs lol I cant get enough your so informative. KEEP UP THE GREAT WORK👍👍

I would love to see a test video on garage floor coatings impact, abrasion, chemical resistance and so on, or paint on rust encapsulators like por15

More suggestions. Best dog bed (durable) best chain. best rope. best string. best chalk snap line. best shop towel. best paper towel. best toilet paper. best cat liter. best night vision(hunter stuff under 500 or 1000 i suppose?) best shingle for roofing. best water barrier for siding or roofing. best water proofing/fire poofing products for interior walls. best insulation. best noise dampening product. best window ac unit. best/ largest power bank for solar or house appliances to charge or draw from. best wire. varius gauges by brand. best voltage meter. best moisture meter. best boat sonar. best metal detector. best witching sticks. best hair clippers for extremely thick hair (humans/dogs). best radio(construction or onsite wireless/mobile mp3 boombox) rechargable. best blackout curtains. best blackout window screens. best work station(genertic or specialized) how many tools can you fit in one easy to use space and have a very good work flow. best tool bag. at this rate we will be asking for best AI and best floating scooter soon. best camping tent. best bushcrafting tools. best flare/flare gun. best hazard cones. best first aid/trauma kit (complete). best bandaids. best wound wrap/dressing. best puncture/bleed stop. best tournequette. best blue light blocking glasses? best welders mask/goggles. best eye glass/magnifying glasses worn/held. best micro/detailing cleaning/scraping/scrubbing tool/tools for cars/small appliances. Best tazer. best pepper spray. best paintball gun/barrel. best grapple hook. best center drop pendulum?(idk what theyre called) best square. best ruler. best level.(lazer and bubble) best marking tool for the most precise lines when cutting. i hope youre getting as much of a kick out of this as i am. ty again again. 💪🏻👽👍🏻

Dang dude that's an elaborate setup hinges, drills, wood, zipties...

I usually criticize your tests pretty hard....but this was an outstanding set up. I like how you describe VALUE at the end as having a variety of definitions. Very nice work!

I’ve spent 3 weeks in a grinding room straight beveling fittings with a Walter abrasives wheel and out of all the wheels I’ve ever used they work the best after there worn down because they don’t cut as hard it’s easier to bevel fittings

A lot of people must of watched this because my local Harbor Freight was almost sold out of the Warrior 36 grit discs! I got 'em cheap for $1.49 each (limit 5) with the coupon.. Excellent comparison video Project Farm!

I’ve used the HF ones before, they aren’t bad for the price.

Man I love this channel. I really appreciate the effort you put into these!

Noce job, i use the walter at work on a daily basis, they seem to be a great product.

When I seen the title, I was wondering how you were gonna pull-off this test! You did a great job! Thanks so much for the valuable information you provide us consumers!

I buy the Warrior ones in bulk when there is a coupon they have the .99 cent each coupons and at that price they are good the the price vs material removed.

We found the tiger disc takes the most metal off per minute and last a long time. It's popular in the lower Louisiana area.

Would love to see how a 3M flap disc did in comparison

I'm convinced you're a madman. But you're so thorough and fair that I'm a Patreon supporter anyway. Well done sir, I learn something from all your videos.

Honestly, if anybody needs 2 million + subs - It's you! Great work man.

Well I just bought my last DeWalt wheel I guess

First off, love the videos! Can you do one on popular car waxes/sealants such as turtle wax, meguiars, etc. Thanks!

I am constantly impressed by Diablo, I have been using their circular saw blades for a while with good results!

Warrior also has 40 grit and zirconia based discs.

I would have liked to seen the flap discs from Amazon. Benchmark Abrasives brand. They seem to hold up pretty well and at $2.00/each, it's hard to beat the price!

Never seen trimmable flap discs before. How do you trim it exactly? Its hard plastic.Great test as always!

really glad to see someone is doing this type of comparison video! im building a truck right now for my youtube channel, and want to spend my money in the best way possible, so it looks like i might be picking up a diablo flap disc haha! i really love their sawzall blades! absolutely unbeatable.

Test wood glues. I'm curious if I even need wood glue or if I can just use superglue. Your videos are awesome.

Can you test best polishing compound?

Great video, though I'll buy warrior when they are .99 cents

Todd you have saved me so much money at this point, I have purchased many of you winners and they do not disappoint. Thank you and keep it up from one DIYer to another test away and give us the best.

Please someone correct me if this has been done by PF before, but best double sided tape could make for an interesting experiment

Am I going crazy or was the speed on the first harbor freight disk fun really slow?

Can you test the 3M cubitron disks as well I've had good luck with them

I came across your reviews by accident and I have now watched most of your videos. I even watch the ones I would never have anything to do with or use the product but just enjoy watching. I know, for me, I have learned a lot. Don’t ever let the big brands buy out your ethical and honest opinions. Keep up the great work! Thanks again for the great content!

I thinking testing the Benchmark brand abrasives would be awesome. They sent me a trial pack awhile back and I have been hooked on them. Prices are fair and the disks hold up well in my experience. I would like to see how they hold up to your testing.

Can you test grease?

how exactly would you trim these? (the trimmable ones obviously)

Every time you build a contraption and are halfway through explaining I'm thinking "man that's a great way to test this stuff".. then you break out another part of it lol Like this, I was impressed with the weight and stationary angle and then you said the metal will spin as well. THATS going the extra mile. Thank you!

Great video! Hey, I’m seeing ads for USB rechargeable batteries, have you tested any rechargeable batteries of any type? Thanks!