The best shop vac for Drywall Dust - teach your sonFine Dust Wet is available on Amazon.

There is a chance that the dust will rip your filter.Your vacuum motor will be damaged by the dust.

The air from your vacuum will be redistributed through the drywall.This is a cheap way to get rid of the dust in the house.You will need it.

Measure what's available to you, not the total inner diameter, since shop vacuums tend to be slanted.I have 1 1/2 available in my vacuum.

If you want your vacuum canister to have an angle that works best with it, you should cut your pipe less than the distance from the inside of the vacuum to where the hose connects.The angle does not matter as the length can be in-exact.

You may need to adjust the angles of the pipe if you glue the pieces together.

Put some soap in it.The water will make a lot of bubbles.Too many bubbles is bad, they will shoot out of your vacuum.

A good level of foam will be shown in this picture.This is a small amount of soap.

Make sure your shop vacuum water filter is on and start vacuuming your drywall dust.

Instead of the air, lungs, and vacuum motor, the dust should be trapped in the water.

5 months ago

I'm also looking for a similar solution.Yes.It's a killer for vacuums with central vacs.A secondary collector bin extended with a length of hose a good distance away from the primary machine or motor could be used as a twist on this.With or without a bag.It is less likely that dust will come back to the machine if it is a good distance away.

3 years ago

I would be careful using the elbow at the bottom to submerge it in the water.There are two things that could happen if you do.The more bends there are, the less suction there will be.The greater the flow of air, the better the vacuum.The flow of air will be cut off if the elbow is submerged in water.The vacuum motor is stalling, working very hard to move air, other than what leaks around the lid seal.It will create a "water dam" in front of the elbow.The water will be drawn away from the elbow.The sound level rises dramatically when you hold your hand over the end of the hose.This will shorten the life of your vacuum if you use it a lot.The bottom elbow should not be used and the straight down pipe should be stopped about 4 inches from the bottom.Put 3 inches of water in the bottom.The inside of the pipe is filled with moving air.When the air leaves the bottom of the pipe, there will be a natural curve all the way up to the filter.While free air moves on, the dust will contact the water and stay there.This is a great idea but needs some tweaking.

1 year ago

Great idea.There is a professional handyman here.This works well, but don't put the inlet pipe in the water.Will work if it's above the surface of the water.The filters that are included with the vac at the time of purchase can be purchased separately.I would recommend using one of these as they can be cleaned/rinsed and do a great job at collecting dust.I might try adding soap to the water next time.I have always had great results with just water, so it seems like an unneeded step.

2 years ago.

I want to correct the post.The water won't stop the air flow.The shop vac has a motor.The outside air is under pressure.The air will move from high pressure to low.Dust particles will be held to the water by the surface tension of water.Too much soap will cause bubbles to exit the machine.Too much water is the same thing.Cheers!

3 years ago

The idea is to make an actual "water filter" like in $500 home vacuums, but used for stuff like dry wall dust, and a simple modification of your current wet vac.

I don't think this will have a big impact on the lifetime of the 4 HP+ motor used in wet vacs.

2 years ago.

It won't keep from shooting drywall dust into the air, and worse yet, it may replace you damaging your vacuum motor with damaging wherever you're vacuuming, with water.The water level doesn't stay flat when the vacuum runs.Even if the vac is off, the lower elbow won't be submerged.If you have a vacuum, the dust gets passed through the vac's filter, which can't remove dust this fine, and then gets blasted back into the room.It doesn't do this immediately.It takes a long time to saturate the foam.For me, between 30 seconds and 2 minutes passed after turning on the vac, it started shooting water everywhere, damaging my floor and drywall. If you are going to try this (not my advise), make sure you have a second person whose only job is to watch the exhaust port, withIf the exhaust starts spitting water, have them shut it off.If you buy a cheap vacuum, pre-sweep as much dust as possible, then accept that you may ruin the vacuum you use at the end.It's better than water damage.I followed the instructions exactly.Everything was done according to the howto.

3 years ago

The soap for rental carpet cleaners is cheap at stores.It would be a good option.Try this with my media blaster and see how it works.It's cheaper than a dust cyclone doctor filter.Excellent write up.I know about water filters but never thought to use them for media blasting.

3 years ago

Three years ago on Step 7.

You may be right.I might try to see how much dust gets thrown back out.Maybe a partial 'air escape' would do if too much.Older vacuums have a small band around the pipe to adjust the amount of air.Is it still a bit more strain for the motor?The strain may not be enough to cause harm if the water is small.I'll listen for strain.

3 years ago

You should add more water and forget soap if you want to reduce bubbling and improve effectiveness.

Four years ago.

I signed up to say thanks for the idea.I cleaned up a 400 sq ft room that I sanded yesterday.There was no dust in the air after the filter was cleaned.In the past I have had to stop multiple times to clean the filter because the shop vac wouldn't start and it looked like a fog in the room.Thanks again.