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woodworking-dust-collection-system-tutorial The woodworking dust collection system tutorial your workshop is, the better your dust collector needs to be at collecting dust because it needs to function well for the entire space and keep it free from woodworking dust collection system tutorial accumulation. The Bosch Dust Extractor is the perfect combination of power and portability which makes it a very good choice for small to medium-sized workshops. Blast gates. Not only can the cyclone dust collector capture the smallest dust particles down to 1-micron, but it can also even pull larger wood chips collecttion into the large gallon collection drum. Can you tell me what dust collector this is?

I have not personally done scientific analysis in this area, but anecdotally I am not aware of a prevalence of explosions due to non-grounded PVC ducting. If your research findings or demonstrative evidence are available on-line please feel free to post a link so that other readers can view this information to help them make an informed choice in this area as they set up their dust collection systems. This is the beauty of on-line articles; the ability to keep the discussion going long after the articles are published.

I love it! Without going on too long here, see the directions from Shop Fox above. Most if not all collectors come with a warning like this. Usually when we see a cloud of dust in the shop, we think about not breathing in too much of it. The real danger is having a spark occur at the same time. One of the other members here wrote that he saw and felt a very large spark when he was dumping his bags. This would be easily able to cause an explosion if the right amount of dust was floating in the air at the time.

Grounding your existing ductwork would not be expensive or time consuming. Its like having ABS in your car, you might not know how many times it saves you. But you surely will know when it does not. These are good points, Scott, and I understand the theoretical risk; wood dust is flammable, and under the right conditions it can ignite.

The comparison to the health risks Woodworking Dust Collection System Design Zoom of breathing dust and driving dangers are fair to an extent, although there is a lot of evidence to suggest that those items in fact can be statistically linked to health problems and injury. With the prevalence of PVC used in dust collection systems around the US, if the risk is in fact statistically significant there should be numerous examples of explosions resulting from this.

I have seen this topic debated in woodworking forums for nearly two decades, but I have not seen any compelling evidence to support the theoretical risk. First, I would like to review your research findings if they provide examples of explosions caused by non-grounded PVC ducting. If there is emerging data in this area then I want to be informed, and I believe that there will be widespread interest across our readership as well.

Secondly, if you have a means of demonstrating the explosiveness of wood dust in simulated small shop ductwork, I would like to collaborate with you to produce a video on this topic if you are interested, as this would be received extremely well by the woodworking community. Thanks again for sharing your thoughts on this.

After doing more research, I will admit that you are correct in most cases. My concern is not with dust that is moving inside the duct, but with the static that is discharged when nearby events such as cleanup with an air hose, sweeping, or emptying dust bags creates a dust cloud.

This supports the use of PVC as safe. Be careful out there. Re: Grounding- I have worked in an industrial woodworking environment for 35 years. There is almost zero danger of an electric shock to a human, but very big hazard of having a dust explosion!

That tiny static shock you might feel is plenty to cause a cloud of dust to blow up. Moving air causes enormous amounts of static electricity. Typical metal ductwork can dissipate this fairly easily, as it is often attached to metal building structure parts. PVC can Homemade Woodworking Dust Collection Systems not ground by itself, and the fact that it is a good insulator increases the static buildup much higher than metal. If you already have PVC, at least run a bare copper wire along the outside of the duct to ground.

It would be better if it was on the inside, but this is not always practical. In many areas it is strictly against code to use PVC for this purpose. Good luck, and work safe. Here is an example if instruction from Shop Fox, a popular portable dust collector manufacturer. System Grounding. Ensure that each machine is continuously grounded to the dust collector frame with a ground screw, as shown in Figure While I agree with most of your article, I strongly caution any use of PVC pipe in a wood dust collection system.

Just because you may not have had any issues in the past does not mean that you are capturing the dust safely. My suggestion is to use only metal duct, make sure the dust collector will provide 4, Fpm feet per minute velocity in the duct and only capture wood dust with your dust collector.

These simple steps will drastically reduce your dust explosion risks. Love the system but for one thing: Insurance companies Pretty sure every single one of them will not cover a house fire if there is a non metallic DC system and they can claim that the fire started there. They allow no substitutions like ground wires straps etc. They only cover metal ducts that are grounded. What are the odds that a DC will cause a fire? Maybe remote. PVC duct systems are common in hobbyist woodworking shops but users are encouraged to perform their own due diligence to verify their insurance coverage.

Love your DC. Love your approach. I learned that no insurance company will cover a fire that they can claim arose from a dust collection system not made from grounded metal piping. Put aside the whole fire risk or not question and ask the other question of insurance coverage. The problem is that insurance companies have an unshakable conviction that non metal ducting is an unreasonable fire hazard. You answered several questions I had about setting up a dust collection system in my shop.

Tahnks for writing the article, it was very good for me. I dont know if you can answer my question. I want to make piping for my cfm dust collector. At the output of the collector, there will be 2 lanes. The left lane will be on 4 inch pvc duct for about 14 feet with about four 45 degrees elbows.

The right lane will be on 6 inch pvc for about 30 feet with a 5 feet of vertical duct on the 30 feet with about four 45 degrees elbows. At the end of the 30 feet, it will have about 16 feet of 4 inch pvc to reach the tools. Only one tool at the time will work on this collector. Can you tell me what dust collector this is? Would such a small system work, in your opinion? Hi Jim. It would collect some of the heavier debris but would not do much to collect the fine dust that causes health problems.

I would recommend at a minimum a 1. I incorated 12 v switch system to start the system automatically. Use metal pipe with whatever fittings you choose to afford and make sure to ground it in at least one place. Blast gates are setup at each tool, and you only have it open when you are using that tool; all other gates remained closed.

That provides the full concentration of suction right at the tool you are using, to get you maximum dust collection from that tool. If you left all of the gates open you would have very poor air flow at each tool. Hi Rick. Hi Timothy. Wish I had read a a long time ago. I have learned all this and more by going it alone with my first system.

On my third now and it works great. Not quite done yet but what a difference hen you get big pipes and a powerful blower. John the Handyman in Las Vegas. I have an 8 foot stroke sander as well as a small belt sander and blow up sander, would I need to run separate runs to each of these. They are side by side in my shop. The stroke sander is the worst tool for dust and not sure what is the best way to set up the collection piping on it.

I am in the country with a bush beside my shop so I plan on piping directly to the out side with the out let. Hi Ron. Thanks for reaching out with your questions. I would recommend a separate drop for each tool. In other words, you are better off if you have a single blast gate designated for each tool, and therefore each tool gets the full air flow from the dust collector.

For the stroke sander you will probably want to build a shroud of some sort, and position it directly behind where the dust flies off on the left end as you face the machine.

I would build a shroud, or buy one, and experiment with positioning it. Great article. After much research about metal vs. Although my shop is in the painting stage, I can assure you I will be implementing the ideas in this article. I have a Clearview cyclone can I run the dust container off the bottom at a 45 degree to a barrel outside the wall. I would think so, but I would suggest contacting the folks at Clear Vue with this question to be sure. Thank you for all the great information.

I got a great deal of information. Thank you. I combined a cyclone with a bag style dust collector and placed both in the room next to my shop to keep the noise level down.

I placed a blast gate at each machine along with a pushbutton start stop station. Velocity is high enough to move dust as well as planer chips and lathe shavings. To prevent static charge and shocks I lined the PVC and fittings with a strip of aluminum foil duct tape with the ends wrapped around the pipe ends and fitting ends so that continuity is maintained from the machine all the way to the dust collector which is electrically grounded.

And if you were using a four inch line a low cost take off is the plastic end caps found in rolls of carpet at your builders supply. Paul, thank you for some very helpful advice. I searched the internet and read books to do the best I could and I see I managed to get some things right. After years of searching the plumbing depts for fittings to connect different tools I now look at how a tool will connect BEFORE I buy it and sometimes buy the brand that put more forethought into connecting to my dust collection system.

I disagree with your suggestion of using screws whenever possible to secure joints. The sharp point and threads of the screw inside the ductwork will tend to catch and hold onto small pieces of wood chips that can build up over time.

If using PVC, why not cement them together? If using metal, as I did, try using pop rivets instead of screws. Then make sure to seal the joint with aluminum tape. When comparing types of material for my dust collection pipes, my local plumbing store recommended dryer vent pipe. This seem to make excellent sense when they explained PVC is meant to move water a heavier substance and dryer vent pipe is specifically designed to move air a lighter substance.

What are your feeling? I would think that the speed that the air flows through the pipe and dragging the dust with it would be a better standard. True, a large pipe has less resistance, but a smaller pipe allows for faster air travel through the pipe. If it drags the air from the tool at the far end of the system it should be adequate to move the dust through the rest of the pipe.

You must have a very large air movement system. Also do not discount air restrictions after the power. Skip to main content. Dust Collection. How to buy a dust collector. Choosing a dust collector can be anything but simple.

We've stripped away the mumbo-jumbo to show you what you really need to know. Busting dust in a basement shop. Put an end to dust migration from your shop to the house. Grime-stoppers, rid your tablesaw of dust. Two-stage units such as the Dust Boy Delta also makes a two-stage collector are also nice and compact.

The Dust Boy takes up 6 sq. The Dust Boy as does the Oneida comes with a Leeson motor and cast-aluminum housing and impeller fan , and the sturdy plastic barrel holds a lot of debris, 55 gal. Before it can be emptied, however, the heavy motor and housing must be lifted off. Removing the lower bag of a single-stage collector is an easy matter of loosening a band clamp.

The real fun Commercial Woodworking Dust Collection Systems Limited begins when you try to reattach it. The lower bag must be wrapped around the metal waist of the machine and held in place before the clamp can be cinched.

Some manufacturers, such as Jet, add an elastic band inside the lower bag to facilitate reattachment somewhat. The skirt and a standard gal. I just wish the skirt were made of felt rather than the more porous woven fabric.

This setup will reduce the air volume. When an ad says a collector is rated at 1, cfm, what does it mean? Not much, really. Cfm stands for cubic feet per minute, a measure of the volume of air moving past a point of reference. The cfm figure needs to be put in the context of the amount of resistance, or friction, present called static pressure, or SP.

Air moving through duct or hose encounters resistance, just as a person would slipping down a water slide. The more bends and bumps, the slower the ride or the lower the air velocity and volume. Many manufacturers rate their machines without bags or duct attached. While trying out a number of dust collectors, I measured their performances under real working conditions, using flexible hose, PVC pipe or metal duct in my sq. I also measured collectors hooked up Portable Woodworking Dust Collection Systems Free to a straight piece of 6-in.

Collectors ranging in size from 1 hp to 2 hp have impellers fans sized from 10 in. All things being equal motor speed and impeller design , a bigger impeller coupled with a bigger motor will move more air than a smaller pairing. There are some differences among collectors; to learn more, ask a manufacturer for an impeller performance chart.

As soon as any collector is hooked up in the shop, performance declines in relation to the length and type of hookup. Materials that affect airflow. The metal elbow top , which is designed for central dust-collection systems, has a gentle sweep, which lowers resistance to airflow. Plastic PVC pipe has a tighter-radius bend and restricts airflow more. Ribbed flexible pipe also disturbs airflow, up to three times as much as metal. Hooked up to two 6-ft.

With a larger upper bag, I found that the cfm readings were not compromised. But if you happen to vacuum up any offcuts, they will make quite a racket rattling around in a metal trash can. Although many woodworkers, myself included, have used PVC drainpipe for duct without mishap, experts warn against using the material. The connectors elbows and wyes restrict airflow, and the material builds up a static charge, which may cause a spark and set off an explosion. Running grounded copper wire inside the pipe reduces the hazard.

Use PVC at your own risk. Metal duct and fittings are obviously better and will also last longer. Your collector will work more efficiently, and so will you. Quick View. Add to Cart. Jet - Vortex Cone Dust Collector, 1. View All Dust Collection. You must be logged in to write a comment.

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