Metabo US606467800 Concrete Renovation Grinder

This is the first grinder I've ever owned, and the first concrete project I've ever done. I selected it to grind 700 sq/ft of concrete floor clean to prep for a professional floor coating. It was well reviewed here, and there are several good utube vids of old farmers tearing down different brands of grinders to show you the parts and what they think if it. Also, the Metabo supposedly has less vibration and is easier/more comfortable to use. After grinding 700 sq/ft of filthy 25 year old concrete ( a total of 7 hours) I have the following observations.The grinder pulls a lot of power, it ran best on a 120 volt 20 amp circuit, and nothing else could be plugged into the same circuit without popping it.It is heavy, this is good as it helps you put pressure on it to grind the floor.The trigger is a little fussy to use but easily locks in place, so you don't have to hold it on the whole time.I used a diamond turbocup from E Diamond tools, the worked well, 700 sq/feet used about a 1/3 of it.It is a challenge to get the turbo cup off, especially with the shroud attached.Ooo the Shroud..., the one that came with it didn't fit. It was like it had be mashed in the box for 6 months in one position, then wouldn't flatten out. Concrete grinding puts out an appalling amount of dust, which you should not breathe, you need a quality dust mask, hearing protection, and a vaccuum that hooks directly to the shroud. Anyway amazon replaced the crooked shroud with a new one, which hadn't been mashed and it worked acceptably. It is difficult to adjust so that the dust created goes up the vacuum, not in your face. It is challenging to get the shroud on the grinder, and very difficult to get the turbo cup off with the shroud attached, which you will eventually have to do unless you want to throw it out when your done, which at $350 you don't want to do. A call to Metabo customer service quickly got me a native English speaker who knew a lot about grinders, but couldn't help me.Overall, the grinder is excellent, powerful and smooth. The shroud wasn't great and a good vacuum and mask are essentials. It isn't cheap to do this yourself, but it was 1/3 the cost of hiring a pro to do it.

Does not come with blades but does come with the vacuum shroud in the photo. The shroud is super hard to get on. I had to use oil around the rim and put my whole body weight (215lbs.) into it to pop it on. It works fantastically when combined with a Ridgid vacuum that can fit a Ridgid hepa filter and hepa bag internally. I had trouble finding a blade to fit it. DO NOT PURCHASE ANY YELLOW DEWALT CUP BLADE. They are too thin height-wise. I finally found one that fits and listed the link below. With that blade, it has a brass ring that you pop out of the middle of the blade and then use the 7/8" arbor kit that is sent with grinder. Also, I used all but 2 of the washers that came with the grinder to get the right height on the blade in order for the vacuum suction to work.https://www.amazon.com/Concord-Blades-GCH070AHP-T-Turbo-Diamond/dp/B00LQKVBVK/ref=mp_s_a_1_1?keywords=Concord+gch070ahp&qid=1568927134&sr=8-1

Exactly what I ordered. Great quality, fast delivery.

I'm grinding concrete and it does the job with the right coupler wheel ( red s style) is the one I've been using. But to remove the wheel is my issue cause it's really hard and is easiest with 2 people which isn't convenient

Alright, I want to share my experience with the Metabo Grinder. I work with hardwood floor installation, and after struggling with cheap brands due to their short lifespan, I decided to invest in a much more expensive product, assuming it would be of better quality. That’s when I got disappointed.After only 10 months of use, the tool started having issues. I contacted the manufacturer, and they quickly provided me with a list of authorized service centers. That’s when the problems really began.I chose Buildings Pro Supply as the authorized repair shop and went to their store. They told me they needed three days to diagnose the problem. I waited ten days, and then they called me, saying the issue was with the motor connection function (I don’t even know what that means) and that the repair would cost $250.I explained that the tool was still under warranty, but they told me that this specific issue was not covered.So, I told them to return my tool because I wasn’t going to pay for a repair that should have been covered. And that’s when things got even worse: it took them another ten days to return it, meaning they kept my tool for over twenty days.When I finally went to pick up my grinder, they handed it to me completely disassembled inside a red box, with missing parts—parts that they broke when taking it apart! When I questioned why they were returning it like that, their response was absurd: since I refused to pay for the repair, they didn’t bother putting it back together because they wouldn’t get paid for it.So, I gave them a fully assembled tool, and they returned it as a pile of loose parts, with some even missing. This is a complete lack of respect for the customer!Well, that was my experience. If you’re looking for a high-quality product, do not buy from this brand!

Very powerful grinder, better than the last 2 Dewalt I've owned by a long shot. Not real crazy about the dust collection shroud. It works, but not nearly as efficient as the molded, attached shroud on the smaller 5 in Metabo renovation grinder I bought. Also, with the shroud attached, it's almost impossible to attach the U handle on the top. With the handle attached, the dust port on the shroud is smashed down. Also, there's not nearly enough spacers provided to use a diamond cup stone with the shroud. You need to buy a few more spacers before using the cup stone. Be sure you do.....if you use it without the correct amount of spacers, you'll lock the cup stone into the rubber shroud and it's almost impossible to get it off.