Ratings & Reviews for DEWALT 4.0-in Diamond Cup wheel

Good tool

I liked this diamond cup wheel and did the job well that ground some concrete down.

Save your money.

It does not last. Grinding paint off a gunite pool. Only did 50 square feet and half the teeth and diamonds were gone. Worn down almost an 3/16 of an inch on the edges. Will buy Rigid or Makita in the future.

Great concrete prep tool

disc worked like it should cleaned concrete down to smooth surface

Works Great.

It works great, but I'm using it for an application it's not intended for. I'm using it to bring down and reface a concrete pool. Stripping the old paint isn't working as well as I would like, but once on the concrete it really digs in if you let it. Be careful and use light pressure until you get the hang of it. If you are looking to use this on a wider area, get the 4.5 or even the 7in to save yourself some time.

Wears down to quick. It would cost me roughly $250.00 to finish the job. I finally gave up because I wore out two wheels.

Every tile setter/layer needs this in tool box

Outstanding for removal of old thin set/ grout on demo projects in tile floors. Would definitely get the guard that hooks to your shop vac as it’s extremely dusty and nasty. However it moves right along in cleaning of your surface. Made this repair much much easier and faster than other typical methods.

This Dewalt wheel worked very well grinding down my garage floor to prepare for an epoxy floor. It was fast and easy, not requiring much muscle, the tool does most of the work. I used the wheel with a 10 year old Dewalt angle grinder. It took about 6 hours to grind off a layer deep enough to remove all stains, grime and oils in a larger 2 car garage.

This thing is merciless

I had been trying to remove old thinset to add new tile after a remediation and moisture-proofing. I purchased one wheel for cutting, and it wasn't what I needed. The grinder wheel that came with my grinder really wasn't impressive. Back breaking work. So then I got this thing based upon the reviews. This thing is an angry, vicious, and merciless piece of hardware. It ate the thinset unbelievably quickly and made a hard job very easy. That said, I strongly recommend a respirator and someo...

Worked good

Not a pro but certainly a very experienced hobbies. Had about 275 sf of basement concrete needing to have the sealant removed before porcelain tile. If had to do over I would have bought 7” grinder, wheel, and dust shield. This time I bought a Makita 4.5” grinder (did Ok), and makita diamond cup. Only used weight of grinder (no pushing down on grinder) and Mikita cup clogged often (oil based sealant) and required GoofOff cleanings (Xylol). Not sure why, but Makita cup tired out quickly....

cuts like butter

Used this to remove mortar under ditra from a concrete slab. Barely applied any pressure and it came right up.

Worked great

I used one to clean thin set off tile in order to reuse them, it worked effortlessly.