Making a concrete dust collection system

[Jaja]

I have one of these that I've never used:

Model 152213351
3/4 Horsepower (continuous duty)
1-1/2 Horsepower (maximum developed)
600 CFM
3450 RPM. (no load RPM)

and a project to grind some cracks in my basement concrete floor before patching.

I want to contain as much dust as possible since I'll be grinding inside the house. I was thinking I could made a wood box that I would mount downstream of the inlet funnel which would sit on the floor next to where I'm grinding. The box would contain a low micron shop vac filter and catch the dust before it passed through the blower unit.

In line it would look like this:

Blower unit < hose < filter box < hose < funnel

I could also mount something at the end to capture dust better than the bag for saw dust that's included, I just haven't figured out what it might be yet.

I have a big shop vac as well but I thought this might work better since it has a bigger motor.

Think it will work?

 

[mikepelchy]

I would wet sand it at all possible and try to eliminate the dust period.

I built a "cart" for when working in the house that consists of a blower out of a furnace that has a piece of flexible duct work hooked up to it, which I put in a window. It works pretty good for taking the dust in the air and moving it outside.

 

[Lynden]

Are you grinding vertically to enlarge the crack or horizontally to flatten the floor on both sides of the crack? Are you using an angle grinder? The dust shrouds made for angle grinders work well.

https://www.google.com/search?clien...2......0....1..gws-wiz.......0i71.cx27nrnBfYQ

https://www.google.com/search?clien...j0i7i10i30j0i13i5i30j0i13i5i10i30.UTcf0cStpak

 

[Jaja]

Are you grinding vertically to enlarge the crack or horizontally to flatten the floor on both sides of the crack? Are you using an angle grinder? The dust shrouds made for angle grinders work well.

https://www.google.com/search?clien...2......0....1..gws-wiz.......0i71.cx27nrnBfYQ

https://www.google.com/search?clien...j0i7i10i30j0i13i5i30j0i13i5i10i30.UTcf0cStpak

I'll be grinding vertically with a crack chasing diamond blade on a angle grinder before filling the crack and later painting the floor. Not much later I'm installing carpet on top of it all.

 

[supermenz]

The dust shrouds for the angle grinders do work well but you will want a strong vacuum to pull as much concrete dust as possible. I went to the local home depot tool rental and got a dust extractor (like a shop vac but way better). I also used the dust deputy with my shop vac later to finish cleaning up after I returned the dust extractor. Grinding concrete ***** no matter how you do it.

 

[Jaja]

The dust shrouds for the angle grinders do work well but you will want a strong vacuum to pull as much concrete dust as possible. I went to the local home depot tool rental and got a dust extractor (like a shop vac but way better). I also used the dust deputy with my shop vac later to finish cleaning up after I returned the dust extractor. Grinding concrete ***** no matter how you do it.

Did you rent this:

https://www.homedepot.com/tool-truck-rental/Dust-Control-Vacuum/3505231/index.html

??

 

[Jaja]

I found this. It might be the best approach. I can rent a dust extractor and attach this to my angle grinder.

https://www.dustmuzzle.com/dust_collector/universal_dm_for_crackchasing_tuckpointing_cutting.php


Maybe I can use the dust collector to move 600 CFM of dusty air outside. Or rent an air handler/scrubber.

 

[Stuart in MN]

I had some work done to the floor in my basement a few years ago where they had to saw cut out a section and replace it. I took an old box fan and built a temporary ductwork out of corrugated cardboard boxes, that matched the fan on one end and the basement window on the other end, and fastened it all together with duct tape. With the fan on high and the back door to the basement opened, nearly all of the dust got sucked out through the window. It worked really well and there was minimal cleanup required downstairs (although the grass on the yard outside looked pretty dusty when it was all over. )

 

[supermenz]

Did you rent this:


??

yes, same machine but the one I got was Bosch. It has an automotive type filter that was fast and easy to remove, clean, and replace.

 

[Jaja]

I had some work done to the floor in my basement a few years ago where they had to saw cut out a section and replace it. I took an old box fan and built a temporary ductwork out of corrugated cardboard boxes, that matched the fan on one end and the basement window on the other end, and fastened it all together with duct tape. With the fan on high and the back door to the basement opened, nearly all of the dust got sucked out through the window. It worked really well and there was minimal cleanup required downstairs (although the grass on the yard outside looked pretty dusty when it was all over. )

Clever, thanks for sharing. I'll give that a try.