Diamabrush - how much dust?

[windward]

For the guys who have used the large Diamabrush how much dust does that thing turn up?

dI was amazed at how much dust my 4-1/2 angle grinder with a diamond cup wheel put out. I was going to order a dust shroud for the angle grinder, but if the Diamabrush is going to put out just as much dust, then there is no reason for me to bother with the shroud for the small grinder. I don't think the Diamabrush you rent from Home Depot has any sort of dust collection.

Thanks

 

[ferrigns]

I just did the same thing this past weekend so I'm happy to give you my experience on it. I used a 4 1/2 inch diamond cupped concrete tool on my angle grinder for the stem walls and I was also amazed at how much dust it created. I did the walls after doing the floor so maybe in comparison it just seemed like a lot more?

The large diamabrush grinder that you mount to the bottom of a floor buffer did a great job (the rental from home depot), but the dust it made seemed to stay more or less on the floor. I wore a respirator during the entire process, you DEFINITELY want to wear a respirator of some type. I got the model that had a shop-vac port to help with the dust, but at least with the one I used it seemed fairly useless. I tried it with the shop-vac attached for the first 1/4 of the project, then did the rest of it without it and didn't notice a difference.

I read many of the threads on here about how the process should go and how long it would take and I figured that my garage was pretty clean and would go a LOT faster. Not so much. I think I ended up spending almost 8 hours grinding just the floor of my 3 car garage and I probably could have gone further with it but I just ran out of time.

Best of luck, it does a great job but it's very slow...

-Steve

 

[neonflx]

May I ask how much sq/ft you had.

I'm doing 1335 sq/ft in my garage and renting the grinder from home depot, do you do only one pass and what grid did you use, 25?

Thanks

 

[Johns12]

If you keep the floor wet while grinding, there is little to no dust.

 

[shaun oriold1]

You can keep the floor wet which cuts down on the dust. Just dont let it dry up or the slurry will go into the pores of the concrete, then its a hassle to remove it.

The reason your hand grinder is so dusty is because it spins at like 8k RPM. The floor buffer is like 2-300. Concrete dust is heavy so it stays close to the floor -unless you're using crazy RPM, in which case it swirls around like tornado!

 

[retfr8flyr]

When I did my floor I used the HD buffer and did it dry. I had my shop vac set up with an Oneida Dust Deputy. I would stop and vacuum about every 10 feet. I have about 1100 sqft in my garage and I filled up the 5 gal Oneida bucket twice. There is a lot of dust when you grind but with the HD buffer it pretty much stays on the floor, it doesn't get thrown up into the room because the buffer turns fairly slowly.

The edges I did with a variable speed 5 inch hand grinder with a diamond cup. I had my Dust Deputy hooked up directly to a dust shroud on the grinder and it did a good job keeping the dust down. I used the slowest speed on the grinder and it was still a handful to use and get a flat surface without gouges. I can't imagine doing the floor with a high speed grinder.

 

[elise111]

I just finished grinding mine. Dust was my biggest concern. The 16in diamabrush Home Depot rentals in my area have the dust port now. The velcro 'skirt' they have is too short, so it made a lot of dust. I went back and got a second skirt to overlap the first skirt, and that made a world of difference. I had a vacuum with an auto filter cleaner that worked great, and you can rent them at Home Depot as well. The residual dust on the floor was fairly light once the vacuum system was sorted.

By the way, I diamond cup ground 400 ft sq of my 60 yr old garage, which was a very effective method for a wavy floor. I did not diamond cup grind the 200 ft sq of 30 year old attached workshop since it was relatively flat. I then rented the 16in diamabrush and went over both floors. The 400 ft sq garage took about and hour and it removed the 'kiss' marks from the diamond cup. The 200 ft sq workshop, on the other hand, took 4 hours! The diamond cup is very effective to remove texture on the concrete, whereas the diamabrush is fairly slow for that purpose.

 

[Msliechty]

I used it on a couple floors to remove mastic. Get the Hilti vac when you rent it you will not be sorry. Money well spent

ML


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[Jim B]

It makes this much dust:

 

[mikec35]

When you say large diamabrush do you mean the 7" or the large rentals? If talking about the 7 inch, it'll make a ton of dust unless you use a shroud. You can slow it down and dampen the floor and create less dust.

 

[Dirtygrunt]

What's the best way to clean up after diamabrush on floor scrubber I swept and vac still get dust. Trying to get it ready to put down macropoxy would pressure washing help or hurt thanks?

 

[Baada]

It set off my fire alarm through plastic curtains when I did my FIL laundry room in the basement. I was using water to keep the dust down. It's a fine balance between enough water and too much water and not enough. Not much ventilation though so in a garage with some air movement it might be better?

 

[Johns12]

I did my garage floor with the Diamabrush on the large HD floor buffer. Did it wet and there was no dust. After finishing a 400sf garage, I used a hose and a shop vac to vac the slurry. Worked great but was messy.

 

[LegacyIndustrial]

Some THD stores will have the better Clark Floor Sander (as pictured) with the dust shroud.

We use and sell Dustless brand wet/dry vacs. They are made in the USA and kick-**** over all the units we tried. http://legacyindustrial.net/cart/du...4.html?zenid=8e185bb6f5160ccc42170debecc2f29e

 

[rwwoods]

What type/brand of respirator is recommended for use when dry grinding?

 

[mudfly]

What type/brand of respirator is recommended for use when dry grinding?

Here's what I used.
I purchased a 3M respirator with 2091 (pink) filters off amazon.
The Dust Deputy.
The Diamabrush with the Clark floor polisher from HD.

I dreaded this procedure because of all the dust I'd heard that was produced. As it turns out, my dust situation wasn't that bad. At least not airborne. With my setup most of the dust stayed at the ground level.
I used the Diamabrush and Clark floor polisher with the Vac attachment at HD. The HD guy actually tried to talk me out of the clark and into one of the other units with a faster rpm. I knew from reading this board that the slower rpm would actually be better.
Worked out very nicely. It does leave a fair amount of dust on the floor that needs to be vacuumed up after your done. I went over twice with the vac and still have "dust residue" that I may have to mop with a very small amount of water.

 

[LegacyIndustrial]

We recently tested Dustless Technologies new shop vac and two projects were completed without a dust mask being needed.

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[Acuratechva]

That looks great, I'll be doing it soon. Would you say I could led muscle one of those things off the HD van by myself ...without braking my back that is

 

[LegacyIndustrial]

If you are careful.


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