I just imagine conference room at Metabo full of suits watching this with someone translating, it would be hilarious.

Expect to hear from my lawyers.... they love your BOLTRs too!

Metabo Angle Grinder’s gear drive, uses Elkalub (Chemie-Tecknik) brand, GLG 16/N00 “Special Grease” It's a Lithium ‘Soap’ Grease with a Dropping Point minimum of 170 degrees Centigrade.

The Germans will never be able to match the thrill of using a Harbor freight tool! The raw fear as you move your hands back away from the gathering heat and the "Jack in the box" anticipation of what could be coming at you at any time. Sparks , parts, flames. It's an extreme sport for the poor. Waiting too long to bring your tool to failure is emasculating.

I'm not even a home gamer and I'm definitely not a professional I just watch these videos because the they're so god damn interesting and this guy is hilarious

In high vibration environments crimps are more common than tinned multi strand. The reason is the vibration will cause the wire to fatigue at the solder joint since the solder is solid. On aircraft we never tinned, always crimped.

+AvE I used to work at a sintering plant. If you feel like maybe mentioning that these sintered parts are pressed, removed from the mold and then cooked, that'd be cool. I bet a lot of people who watch your channel may be under the impression that the parts are cooked while under pressure which simply isn't the case. Also some parts go through a sizing press after they've been cooked to further meet very stringent specs before leaving the plant. We are talking presses made in Germany that put down over a million pounds of force on a part that is maybe 6-7 square inches of surface area.

That guard attachment design is how they got rid of an inch of thickness so it can go and get those tight areas that need to be polished. And as I see it a genius idea too. simple and effective. Definitely a longer lasting way to do that, and tool-less shroud removal is a time saver. I hope more power tools will have features like that.

The hand finish joke was very well thought out!

Did you know the METABO is an acronym for "Metallbohrmaschine" which translates directly into metal drilling machine?

This guy is FRIGGIN Greeaat !! He's detail oriented, highly intelligent, seriously knowledgeable, funny as fuck, and extremely informative. He knows his stuff. Even if you don't like tools, manufacturing standards and processes, his verbiage and videos are really enjoyable.

AvE, not sure if you read the comments from old videos, but I think you shouldn't latch on the crown gear as much as you do. In a 2 gear setup, the pinion is always the critical piece, its whats going to fail. That's why its generally made with a higher quality process/material. Having the crown made as good as the pinion is overkill.

Great video man. Yeah that open-cell foam looks out of place. The trim pots on the electronics are probably for adjusting the "Constantmatic" feature of this particular grinder which is their marketing term for a grinder that maintains a constant rpm even under load. This is probably part of the overload feature you mentioned. Looking forward to your "testing."

I found AvE about a month ago and this has become a staple in my life. I have to watch one at least one a week. My wife watched the DeWalt grinder one with me and she was laughing so hard from your interesting wording of things. Keep it up you got my attention.

We use the 6" Metabo angle grinders with abrasive cut-off wheels for doing commercial and industrial sheet metal work. It is one of the best tools I have ever used.

Hey AvE, Polymer Technology Master Engineer from Germany here: There are a few more efficient ways to vulcanize the rubber as putting it into an autoclave. The Rubber gets Pre-Mixed at a processing factory and the cable manufacturer buys that as premade strips. Those get fed into an extruder where the twisted cable runs trough a quill die and the rubber gets pressed around that. For the Vulcanisation there are various processes. The Autoclave is usually pretty inefficient because you can only run that batchwise, I think they would use either steam (or in asia Radiation) Pipes, where the cables run through continuously under pressure, or a Molten Salt Bath to Vulcanize that. Since that says 105°C, it is either Natural Rubber, or EPDM (EPDM is more likely, since it has a higher resistance to weather, UV and Ozone influences)

I know the little circular thing on the brushes is to back up a small spring that pops out a little non conductive doinger that stops the motor from getting power. I have rebuilt some of the older metabo grinders.

This grinder comes from my town never have i been more proud xD

The switch is made like that for easy replacement (had a metabo where the switch got nasty, ordered a replacement and just popped it in)

It's advised almost universally to never mechanically clamp something that is pre-soldered/tinned. In fact in most jurisdictions (Australia, UK, EU, Canada etc) it is illegal to do such in mains electricity installations. There's a few reasons, the main one is that the tin/solder has unacceptable metallurgical creep. Others are things like tin-whiskers, and oxidation.

Ways to win AvE's heart: 1) Beer 2) Meats 3) Good snap action

in the old days, tools were metal and used to get so damn hot you had to give them a break

note: thermoset's do not melt (you said unlike thermoset plastic these do not melt) . There are thermoplastics, and thermosets. Thermoplastics melt at elevated temperature, thermosets will degrade and then burn, but will not melt.

This where this channel really shines! Love these break downs! Nothing like it ANYWHERE!!!

I've found that if you chug a few Labatt blues and take a few swigs of maple syrup everything he says makes perfect sense :D

No critique about the technical points you mentioned, but you can't compare this grinder pricewise to a "normal" (i. e. not pancake) one and then say it's too expensive. Half the money is going into the flat design of the "WEF 9-125 Quick" you have, which is 291€ when I check the manufacturer's list price. The better specced "WEV 10-125 Quick" (a non pancake grinder) that's a little bit more powerful, has adjustable speed and a mechanical safety clutch costs 172€ as opposed to 291€, so substantially less. (if you don't care about the constant speed control that both offer/adjustable speed that the WEV offers, you can also go for the W 9-125 Quick which literally is half the price of the WEF). You can even mount the gear box in 90° increments to convert it to left handed operation ;) . The electronic block does a little bit more than you give it credit for. It switches the grinder off, if you get the disc stuck, tries to keep the RPM constant under load, prevents the grinder to spin up after power loss if the switch is still engaged and has a softstart so it's really easy to start up one handed (btw. how do you use a rat tail grinder one handed? I guess that's the reason why almost all 125mm angle grinders here in Europe come with that thumb switch).

the 4 grinder teardowns are of my favorite videos of yours, and ive watched atleast 100. Good stuff!

When I started working as a millwright our shop had nothing but metabo grinders, all the guy swear they are the best. I have worked here for a few years and have yet to see one actually stop working 19 millwrights and so far 0 failures.

I think it'd be awesome if you could make a "FRANKENGRINDER" Take all the good bits from the grinders you dissassemble and examine and make a bullet-proof one. With all the best bits, Top of the range grease, powercords, hobbed gears, bearings, ect........

Thanks for the intermission - I've subbed to all of them! KZfaq recommendations ain't got nothin' on this guy

I've had this grinder for two years and love it

Inside the brushes on Metabo and Makita they have a little brass button on a spring (that little copper indicator at the top). Once you hit the wear point of the brushes, it shuts the machine down so you cant kill it completely. Point of failure on most metabo machines is the upper / lower output shaft bearings, head side motor bearing, brushes, Marquardt switch on machines that run those old marquardt push fit jobs.. Most metabo machines have shim stacks to adjust the ring / pinion contact; surprised that machine did not.

11:20 the red dot is a seal for the glued in spring inside the brush to pull the brush away from the commutator when the brush is worn down!

just a note on the brushes, there is a plastic button inside the brush that pushes out when it gets to a certain point to stop commutation. Recently replaced mine on my metabo and i was surpised it was there.

I've used Makita, Dewalt, and Metabo. I use my grinders hard on a daily basis. My first Metabo lasted 7 years. The Dewalt that replaced it lasted about 6 weeks, and I hated the feel and sound of the Makita and pawned it off on a new guy and took the Metabo he was issued. When it came time to replace my POS grinder I use out in the garage, I bought a Metabo. Don't regret it one bit.

You have great videos, but I've gotta really give my props to your intermissions, there are a lot of great things I've seen from those. Like that gorgeous tool cabinet from a few days ago.

I actually fall asleep to tonys vids. He's my Bob ross

Perfect thing to watch while doing my homework at 1AM.

The vernacular in AvE's vids are what keeps me watching! Legend in the making.

I have an oscillating sanding machine from Metabo. My father bought it some time before 1965 and this machine still works well!!

I'm glad you're featuring ThisOldTony, one of my favorite youtubers for sure. Some real machining porn along with a good dose of humor.

Natural rubber? You mean tree spooge?

The first 50 seconds of this boltr is raw absolute Ave in it's purest form. Love it

Have 4 of the normal metabo grinders 2 years now at work all flap disc work still going perfectly I love them

the cable comes from the Zhongshan Rifeng Electric Cable Co.,Ltd.   Guangfeng Gongye Ave, Zhongshan, Guangdong, China METABO have two manufacturing plants Nürtingen and Shanghai (China). makes you wonder if the grinders come from Prc and the truth be out now found this on a british site (tool stop) What this appears to mean is that Metabo not only design and innovate with stereotypical German fastidiousness, they also apply that same mind-set to each element that goes into your Metabo power tools. So, the motor housing, the gear boxes, all of the aluminium, metal and copper bits that turn your drill bit, your grinding disk or spin your saw blade are designed, engineered and manufactured in Germany, Nürtingen. At the Metabo plant. Only then are the component parts sent to their Chinese plant for assembly. What we're trying to say is, Metabo power tools are extremely well made. And that's because 80% of all their machines are still produced in Germany to their exacting design, manufacturing and assembly standards. The other 20% are assembled in their Shanghai factory which utilises the local labour force, but is controlled by German Engineers. In some instances German made parts are even shipped over to the Shanghai factory for assembly, crazy as it might sound, this gives you some idea as to the investment in quality that is being made here.

Nice job! I've got the cheapo harbor fraught grinder, and after finding myself using it a ton, i was looking into what a good grinder I should buy. Looks like the makita may be on the top of my list

Howdy, I spent my working years as a Millwright in a Wire and Cable manufacture in Ontario. We had 3 CV lines ( constant vulcanization) to manufacture the rubber cable you were taking about. The rubber came raw in strips that was fed into an extruder that encased the twisted three conductor wire. The wire paid off from gigantic spools and ran down a 300 psi steam tube and turned around on a pulley inside of an autoclave. It then returned to the "takeup spool" under water (to cool). The wire emerged to an accumulator ( allows the constant motion while spools were changed) . Worked there 23 years. That's how we made wire.

I have no idea how I ended up finding this guys channel, but I am so glad I did. Interesting videos and funny too!

you got your ... what in the vice?

It's great when you take these apart, but I salivate when you take apart the chicom shit. Everyone knows that a $300 grinder will at least be okay, but with something cheap from china you have 0 idea what could be lurking within.

First of all, thank you for taking the time to make these videos mate, really appreciate it. I can honestly say that AvE is probably my favourite KZfaq Channel at the moment. Quality vids and great comedy. A man's man channel! But more importantly... christ does this guy know his shit! He's probably forgotten more than I know!

I have owned this model grinder for about almost 2 years now. And used full time at work. The disk stop deal fell out within 4 months of use. Kept falling out until I lost it. Very frustrating because that exposed the gear housing to the elements and now I'm replacing the gear of the head side. The one on the motor side looks fine. But I'm finding out that it's not as easy as I would have thought.

Good vid. Just by a case of horrible freight grinders and you don't have to cry when they are stolen

love everything you do man, keep it up.

I don't know why I took so long to subscribe, as I've been watching your videos for ever, but man your comic-relief is hands down some of THE BEST on youtube.

I cannot get over how well done your reviews are.... The last thing I need is a grinder.. but, I've watched, 3 or 4 video reviews on them!!... (wow!!) lol Keep your stick on the ice...

fuck. i love your videos. but sometimes can you just say " its a good un" or "its a bad un" at the start? so i can order the tool online , and then watch your video while my wife beats me for spending money? two birds, you know?

"You got your *WHAT* in a vice?!"

Love the high quality content you have here. I'm laughing while I learn. Good stuff keep it coming.

The teasers in the last 3/4 vidjeos were drinving me CRAZY. You really know how to add suspense.

“Say you’re doing a meth lab in Guadalajara...” lol

This guy is great! Love his reviews.

Love using my Motabo grinder. Fabricating and can grab and start it up one handed. Hold my metal in the other while modifying it to fit exactly. Use Cubitron II grinding pads and champher up to 2 inch steel like it has been machined. Several of my friends that fabricate use them as well.

We have this grinder in the welding shop. Best grinder I ever used. The braking system is amazing.

You must have got the grinder assembled during Oktoberfest.

Awesome vidjao love the content man.

I forgot to mention that you are by far the Best Tool Review Guy on youtube! I generally regard myself as pretty damn smart, and have worked with and around a lot of very intelligent people, but I will have to say I've never seen anyone with your vast knowledge of Manufacturing & Engineering Processes, every type of Material known to man complete with chemical & molecular breakdowns. I trust your opinion on Tools more than anyone on here. Keep up the good work, and keep it fucking focused. Lol

Depending on the additives in the rubber they don't always need pressure to cure. Right type of rubber can just use steam. We call it an atmospheric cure in my line of work. Another way to cure some types of rubber is hot water where water is used for temperature and pressure (may be used for cable manufacturing using extrusion process). Several hundred different types of rubber and several additives for each type.

In Germany Metabo is the prosumer stuff you pick up at the home improvement store and even there Makita has the better rep. If you have a business to run that depends on these tools Hilti and FEIN is your brands of choice.

AvE featured This Old Tony. Life is good.

Another great review, can't wait for the next test.

As someone who does FDA stainless welding and polishing and uses air grinders all day in the shop(Souix, Dotco, Desouter), when doing field service work and only have 120v electric available, Metabo grinders are the smoothest operating, best feeling tools I've used. We have Makita, Milwaukee, and DeWalt, but the Metabo grinders and Dynafiles are miles ahead when doing precision polishing. I also have a 5" Makita rat tail in my personal shop, but it's been relegated to cut off wheel duty since I picked up a variable speed Metabo 5".

I'll start by saying this is a great review overall. Now the traditional youtube complaining: Why'd you buy a specialty flat-head grinder and then review it like a normal grinder? The normal Metabos are half that price, bringing it into a much more affordable market position. That said, I'm off to go find a vice.

"If you ain't over 200 pounds, you'll be weighed in a child care center" goes the saying, I hear.

This Old Tony FTW! That guys channel is great. AvE is good too. I like how they interplay too.

Absolutely incredible mix of intelligence and humor. Damn near mesmerizing.

"Good luck finding a metric bolt" But I have a few thousand lying around?

Played backwards at 19:21, AvE says 'and that it did spot weld it'. And now you know...

New subscriber and throughly enjoying the content! Your vidjayos bring me joy!!

Incredibly thorough review. Thank you.

Silly question. Is that little bit of foam an air filter? If its on the "in" side of the airflow would that keep it cool enough to prevent melting?

Nice video again Ave. Been wondering for a while. Are you the singer from Crash test dummies? ;) Greetings from Norway

Some women admit to prefer longer tools for their grinding. These Flachkopf-Winkelschleifer are made to get into tight spots, where a ordinary angle grinder could not fit. I only have the short one, but mine is close to 20 years old and still going strong. I've found it in the scrap heap about two years back. Happily, Metabo parts are still readily available here in Europe - The red switch, too. Good luck with it.

My company I work for bought 3 regular metabo grinders 4-5 years ago. Maybe longer. All are still going. I build water trucks for them. Grinders in shop are dewalt and metabo. when i am turning an old cement truck into a water truck my grinder is one of the metabos. I been using the same one a real long time. Keep it in my area of shop. As welder i do tons of grinding for prep. If any of my grinders at home die. They will be replaced with a metabo. I have a man-killer old sioux massive grinder that might be older than me. I think it will outlive me and go to new owner at my estate auction. lol

Looks pretty disappointing for the price. I bought my makita GA5030 for 40 euros, love that grinder works every day, small in the hand, very pleasant to use.

"One Helluva Cord" - that was my nickname back in high school.

I've got one of these that is about 20 years old. Switch is on top, it's about as ergonomic as a stump but it just goes and goes. Frickin bullet-proof and having a fastening nut that doesn't require a wrench is a big plus in my books.

Gutta Percha was a natural rubber that is so skookum it was used for transoceanic submarine cables, and revolver grips. Bricks of old gutta percha started washing up on beaches in England, 100 years after a German ship carrying it was sunk during WWI, and it is still just as good as the day it was made. I have an old Iver Johnson revolver with gutta percha grips, and they still look brand, new after 124 years. Processed white plant latex goo is incredible stuff.

I kinda want to see you present what you'd consider the perfect design or one that has things done as good as you could get. Because i'm curious to know what is the best or one of the better ways of setting a tool like this or another up.

No wonder this thing is so expensive, the German worker needs to work 3 hours at 25€ an hour on the shaft only instead of the 20ct a day a Chinese guy gets.

my buddies dad is been running his metabo for close to 20 years now and we beat the hell out of that poor thing. We have had it in the derbie garage for around 15 years and it still goes to work with the old man 5 days a week

Oldest metabo I have is about 8 years old now - excentric sander- hear its bearings are going now but used it long and hard and never payed attention to the duty cycle rating the 150€ I put down for it has seen me finish what I started with it up to now with no complaints..

I literally never do any kind of DIY projects, hell, the closest thing to a tool that I use on a regular basis is a lawnmower, but I still watch all of these videos..

@17:00 notice that the casting on the head has recesses molded into it for the guard lock to lock into so that the attachment screws aren't the only thing absorbing the shock from the 200-metric-pound gorilla chucking the grinder across the floor at the end of the day...

I didn't realise that this video was 4 months old. I just came across this channel about a few weeks ago and think they're great! I've had a fair bit of industrial use with Metabo grinders (and Makita, Dewalt, Milwaukee and some Hitachi). Each had their pluses and minuses but I have to say that I'm not a great fan of the Metabo BECAUSE of the Quick Protect magicery. all it seams to do is get in the way of working. Also, as the grinder gets older, it seams to kick in sooner and sooner. I've also had a few Metabos where the cooling impeller becomes detached and no longer spins when the grinder is used. No airflow = hot grinder, quickly! Milwaukee are easily the most powerful I've used and, mechanically, the longest lasting (ok, on par with Makita) but the stupid, flimsy way the guards are attached kills the head to quickly. Milwaukee also have some magicery in them to that feeds more power to them when they slow down under load, which is why they're so powerful, BUT this makes them run really hot. I've burned out a couple of their 6" x 13amp paddle (ugh, hate paddle grinders too!) grinders, even though they're supposed to have thermal overload protection? Anyway, great videos, love them, and your terminology to describe stuff. Thank you!

Ave, Great Video as usual. I own several Metabo Grinders, however I do not.own that Pancake version. I haven't had a failure yet, and I've been beating them up daily for 3 years Welding/Fabrication work.

LOL! Its like you know me, I have a 1979 W116 300SD.

So the answer is, to buy 2 Makitas instead. Got it.

I used to work at a shop where we made powdered metal parts. It was very cheap to make them and they were very strong. The process was very cool. We made them start to finish.

Without getting into a yardstick measuring competition, I've just got the Bosch 10.8v 3" grinder. Brushless, direct drive with overload protection. It's kinda like an iPad. Some where between a dismal dremel cutoff wheel eyesight modifier, and a 5" weld performance booster, the size you never knew you needed. Might wanna check it out. Handy for one handed grinding and cutting when you're in a deep dark hole, if you know what I mean.