The bottom line here is any hobbyist fan table that does not also include amperage draw at each resistance level is not to be trusted because the blower more likely than not is running the motor well over its rated maximum amperage! Now decide upon what is a big enough blower to overcome the resistance of your system. Customers who have used the [REPLACE_KEYWORD] before you wont accuse you of wrongdoing, will they? CFM Caution Please realize that this table shows the airflows needed for the different levels of collection for larger tools. Finally, most hobbyist woodworking stores and tool vendors reinforce these poor ducting designs by mostly only carrying inappropriate ducting and dust collection equipment. This leaves our single runs with the airflow limited by the smallest pipe. OSHA testing shows most shops that vent inside give us more fine dust exposure in a few hours than full time professionals in large woodworking facilities get in months of full time work. Because our eyes cannot see particles smaller than 10-microns without magnification, these particles are invisible. In short, our vacuum lacks the incoming air speed needed to pickup except very close to the nozzle. The only real advantage of these cyclones is at higher airflows than needed for "chip collection" all these cyclones continued to provide the same separation meaning close to 100% of the airborne dust went right into the filters. Although this provides the airspeed needed at each specific tool, what happens when this severely reduced airflow hits a larger main is bad news. Wire-reinforced, polyurethane hose provides superior flexibility and anti-static components significantly reduce the likelihood of static shocks. Every 1% missed lets enough fine dust escape to fail 151 typical sized shops, yet OSHA testing shows most small shop dust collectors and cyclones miss collecting at least 15% of the fine invisible airborne dust. CFM (Cubic Feet per Minute) provides the amount of air your blower puts out. Those with three-car garage sized shops have about 10" of ducting resistance. Almost all of the available hobbyist information was contradictory, with much of this information just plain bad. They are 100% correct, but also 100% dead wrong because testing of older tools shows nothing short of starting over with a total rebuild engineering fine dust collection in from the ground up will fix our existing tools. Many vendors also forget that we are filtering very dirty air and size their filters based on manufacture recommendations for filtering the relatively clean indoor air that only calls for about one square foot of the all poly filters for every ten CFM of air and double that for the paper blended filters. These visible airborne dust particles ruin freshly painted finishes. The peer reviewed medical research clearly shows every fine dust exposure causes a measurable loss in respiratory function, some loss becomes permanent, and the greater, longer and more frequent the exposure the greater the damage. Home / Classic Machines / Dust Collectors. Unlike air from a compressor or vacuum cleaner, at typical dust collection pressures air is little more compressible than water, so just about any tiny opening, small hose, small duct, rough duct, poorly made fitting, or bad ducting design will seriously harm the airflow we need for good fine dust collection. Within our selection of cyclone dust collectors, you will find systems with state-of-the-art features at affordable prices. Sadly, most hobbyist dust hoods are poorly engineered permitting the fine dust to escape from all over. Most of us already know this from using our shop vacuums that will only vacuum up right next to the hose nozzle, but on blow will send dust everywhere. As a result most filters provide a range of filtering providing their worst when new or after cleaning and cycling to their best filtering as they plug. Hobbyist vendors and magazines test our blowers running without cyclones and filters or ducting. If we have filters, a trashcan separator, or a cyclone we must use a larger blower to overcome that extra resistance and that opening may not work for sizing our ducting. In defense of the magazines they do get considerable revenue from this vendor. With the pressures available from most hobbyist sized blowers anything less than 6" hoses, flex hose, duct, fittings, and ports will choke the airflow quickly below the 800 CFM we need. CANISTER FILTER CAPTURES 99% OF 2-MICRON PARTICLES. Dust in these piles and filled down drops pose a potential explosion hazard and a serious fire hazard. Hose, barrel or container are required for this kit to properly work. Until such time as government oversight requires hobbyist vendors to provide equipment that meets industrial standards, we are on our own. Collapse-proof buckets won't fold under high vacuum pressures. It probably has some new features, it may have been modified somehow. Commercial shops rarely use blast gates and configure their dust collection systems with huge blowers able to power all ducting runs open at once. hardware pack and 2 ea. Amazon Best Sellers I previously shared a micrograph of wood dust found in a long sealed pyramid. When our oversized impellers with small motors are run without that resistance, they try to move too much air, overstress and will soon burn up their motors. A new product replaces an old product every now and then. Modifying the inlet and adding an air ramp can reduce that pressure even more. Contact our teamto learn more about how our tools can craft anything you have in mind. My doctor started off my research on dust collection. In use filters build particles in the filter material that do not come out with normal automated cleaning. Some of our dust collectors include a sophisticated lift system that eliminates the need for a flex hose, while others come with a hand held remote control that allows you to turn the machine on and off from across the room. Please inquire for a full description of the warranty. To overcome this resistance vendors use larger diameter impellers to create more pressure. Updated: July 22, 2020. Most tools have fast moving blades, cutters, belts, cooling fans, etc. Dust collection equipment vendors that sell indoor dust collection equipment are also fighting hard because they will have to move their equipment outside or totally rebuild it because current indoor commercial dust collection systems will barely meet government industrial hygienists' standards. We can get by with smaller filter sizes, but doing so causes the filters to wear out and fail far quicker. Contaminated air is drawn into the cyclone where the centrifugal action forcibly pulls dust from the airstream, dropping collected particulate into the dust storage container. Again with larger hobbyist stationary tools identical to smaller commercial tools we can use their same recommendations. With some tools, internal resistance so badly messes up the airflow between ports that we still need to balance using a diverter valve and test gauges; All small shop trashcan separators and almost all small shop cyclones pass most of the finest unhealthiest airborne dust right through. Certified California government air quality testing shows small shops that vent their dust collection inside average over ten thousand times higher particle counts than those who vent outside. | With typical 30-micron all polyester filters appropriate only for use on outdoor dust collectors and cyclones that return no air into our shops, we need about one square foot of filter area for every 25 CFM of dirty air. Most hobbyist dust collector and cyclone filters are made from this same filter material, so are too open and pass airborne dust right through turning most hobbyist dust collection systems into "dust pumps" that keep our shop air filled with fine dust as long as they run; The fine hobbyist filters that we buy to address the fine dust problem are still too open and end up creating a false sense of security. This is not good news for small shop woodworkers. This involved replacing almost all existing tool hoods, dust collection ducting, and existing dust collection blowers. Our particle counters show the mask and fan need to go on before we start making fine dust and both should stay on for about a half hour after we stop making dust.our particle counters show the best protection against residual fugitive dust is not an air cleaner because these work too slow, but instead. A fan table is critical in helping us size both our blower impeller and motor for an effective dust collection system. Because the spun bond filtering material is quite a bit thicker, the thicker material requires twice as many cartridges to equal the same area as cartridges made from the thinner less expensive blended material. Most of us think about our dust collectors as a giant powerful vacuum cleaner that will pull air around obstructions, through small openings, and through small pipes. To appear better than their competitors each badly exaggerates their advertized airflow, filtering and separation. Heavy pressure remains on the politicians who run the Department of Labor, Occupational Health and Safety Administration (OSHA). The likelihood of getting an unreliable product increases. Woodworking makes huge amounts of fine dust compared to how little it takes to cause us harm. Almost all "protected" workers in facilities that comply with OSHA guidelines still eventually develop fine wood dust related health problems with roughly one in fourteen now forced into an early wood dust related medical retirement. Almost any small pipe, machine port, or obstruction will kill the airflow. Almost all large commercial woodworking shops that get regular air quality testing do blow their fine dust away outside to stay in compliance with the 1989 OSHA maximum airborne dust requirements. That amount is decided by the capacity of your blower and how much you choke down its inlet and outlet. With "chip collection" only moving about 400 CFM these filters only need about 15 square feet of filter area. These shops test with particle counts that average 10,000 times higher than regulated monitored commercial facilities. Any fine dust that does not get protected by a well designed tool with a good dust hood and then vacuumed up gets launched by almost any airflow from our blades, bits, belts, cutters, motors, etc. The goal is to capture the fine dust at the source and get rid of it. For instance, a down drop sized to fit a 4" port reduces the airflow on an 800 CFM blower to only 349 CFM. It goes right past our natural protections and tends to lodge deeply in our tissues. There are static pressure calculators that will compute the total resistance for our dust collection ducting and other components. The manufacturers also share the filter testing as this filtering material builds up a thick cake of dust in the filter fibers. This also helps prevents any unnecessary damage to dust collector impellers. RUBBER GASKET AND TIGHT SEALS FOR MAXIMUM SUCTION - Each dust separator has a sturdy rubber gasket to provide the tighest seal possible to maximize the suction from your shop vacuum. Putting a 4" sized port on a tool is about the same as only opening a water faucet about 40% then wondering why we get poor flow. *Offer is subject to certain exclusions. As much as possible, we try to present products from a handful of trustworthy sellers, if not more. Although clogging and cleaning are bad, what often first kills most small shop fine filters are sharp chips. As a baseline we first tested the two most popular trashcan separator lids. What led us to compile this list? This makes for a mess for small shop woodworkers trying to make an informed purchasing decision. My research quickly verified my doctor's comment that fixing my dust collection would be a challenge! If we have a good dust collection that only misses 1% of the fine dust we still contaminate our shops with enough fine dust to cause 150 typical small shops to fail their air quality tests. My own clean looking shop with the best magazine rated dust collection system landed me in the hospital and convinced me to launch these dust collection pages. Here are a few of the techniques that vendors use to make their outrageous claims. This near invisible dust gets trapped in our shops where it build to incredibly unhealthy levels. The only good feature is the transparent container but you really don't need that because the cover keeps coming off the unit or it tips over and you can look to see it its full. SC Series Pull-Through (with Bag-Type After Filter) product brochure. If you just blow the air outside without adding a separator and filters, that inlet size is often the ideal ducting diameter for optimum efficiency and minimum resistance. Our Industrial Dust Collectors are designed to improve air quality of your shop in one central unit. Only those who buy from reputable vendors are going to get home with a motor that actually delivers its promised advertised horsepower; Filters can simply build up enough dust cake to prove any level of filtering desired as long as they don't also have to pass any air. Products that received mainly negative ratings are discarded from our top rated dust separator list. This means these blowers are moving at close to maximum airflow at minimum resistance. This causes these piles to get "topped" and simply grow longer and longer. You supply the waste container, the hose, etc. Dust collection manufacturers provide dust collection design firms with both Air Volume Requirements tables and Airspeed Requirements tables so these firms can design commercial air systems that will carry materials without plugging or building up piles in the ducting. The cheapest thing is never the best. can add up to 2.5" of static pressure. The reasons are simple. By definition fine dust also known as inhalable dust by the medical world consists of fine dust particles sized under 10-microns. All filters start new able to effectively filter some fixed size of dust particle at a given airflow. Sadly, the magazine and book editors trust their authors, expert testers, and technical staff to do homework that mostly does not get done. MANUFACTURER LIFETIME WARRANTY - If the dust separator ever fails or is damaged, it is covered by a lifetime manufacturer warranty. Although perhaps provable, the information provided fails to give the facts needed to make an informed decision. Likewise, the top rated cyclone vendor demanded that we test their two, three and five hp cyclones with a significantly over sized test pipes. When downscaled for small shop use, these designs sell well because they look pretty and give a small shop a professional looking large shop feel. By utilizing AGETs cyclone design and equipment, a cyclone dust collector can handle a large amount of dust without sacrificing performance. That OSHA standard set allowable airborne dust levels five times higher than the minimum recommended by industrial hygienists and fifty times higher than now recommended by medical experts. Wish they made some sort of multitool connector and built it into the top for say 3 tools. Likewise, any spark that lands in one of these piles can quickly get blown into a duct fire. The small shop tool industry is stuck on the older 4" diameter ducting that was only ample to collect the chips at the old 450 CFM standard. Air engineers use this fully caked resistance level to size our filters large enough to flow the volume of air we want to move. With no standards or legal requirements many tools are designed with just enough dust collection to make the claim without actually working. Made in the USA. When we stopped our testing because the motors reached their maximum rated amperage, all previously top rated dust collector and cyclone vendors except Jet and Powermatic (both part of WMH Tools) lost their top ranking status. Likewise, our small shop vendors consistently advertise improper filtering levels. This leaves us with poor health protection and left breathing the fine particles through much of each filter's performance cycle. The top magazine rated dust collector vendor puts a warning on their dust collectors that they will burn up if run without at least 10' of flex hose attached. You must use straight or nearly straight duct runs using efficient piping. LONGER FILTER LIFE: Extends the life of your filter and impellers by extracting the larger debris before it enters the dust collector. This unit will not be mobile, and only works for stationary use. Dust collectors and cyclones with full collection bins blow these sharp chips into our filters punching the filter material full of larger holes. A 4" duct that only supports 349 CFM at 4000 FPM only gets 50 FPM about 8.94" from the center of our duct. In spite of the exaggerations, citing maximum airflows and testing tricks all major brand name small shop dust collectors and cyclones sized over 1.5 hp provided the 350 cubic feet per minute (CFM) needed for good chip collection but no dust collector under 3 hp or cyclone under 3.5 hp provided the 1000 CFM airflow that our vendors who guarantee air quality established that we need for good fine dust collection. The increased pressure pushes the finest particles through the filters tearing open the filter pores as they pass. These units are engineered to drop that heavy stuff into a collection bin and blow close to 100% of the airborne finest unhealthiest dust out the top. As the filter plugs the airflow drops causing the motor to do less work and drop the amp reading. The best way to vent outside is to have a strong commercial fan blowing out a back door or window with your main door cracked a little to give good flow through ventilation. With almost all large commercial facilities regulated by current government standards blowing their dirty air and these finest particles away outdoors, most have low particle counts, but still high enough to eventually make almost all ill. Almost any airflow from our tools, dust collection equipment and air compressors will launch this previously made dust airborne. Although this tells us what we have to do, it does not tell us how to get that job done when almost none of the existing hobbyist tools, dust collectors, cyclones, ducting, ducting designs, and filters will do the job providing good fine dust protection. Air engineers who work for these manufacturers have done considerable work as have many of the universities to build careful tables that show just how much air needs to be moved and at what speed for each different type of material. read more. Although it removes the larger particles, the fine dust that is carried over to the vacume cleaner still plugs up the filter on the vac so now you have two devices to disconnect to clean the filter. With pretty overwhelming evidence of the risks of fine dust, almost all large commercial woodworking facilities already voluntarily increased their airborne dust protection to comply with the recommended but not enforced five times tougher government industrial hygienists standards. It also set a maximum personal exposure limit (PEL) for any fifteen minute period. In short we need to move a lot of air to ensure capturing the fine dust. Air at typical dust collection pressures is similar to water in that it will barely compress at all. The high dust concentrations in these piles can explode if ignited. As the filter plugs resistance rises and we lose the airflow needed for good fine dust collection. Why did we make this buying guide? Most hobbyists have shops sized about the same as a two-car garage and end up with about 8" of resistance. A shop vacuum has the pressure to suck air around many obstructions and through smaller openings. National Fire Protection Association (NFPA) rules require collecting the heavier sawdust, chips, shavings, and wood strings that fall to our floors and work surfaces. A fully seasoned filter provides about twenty times better fine filtering than a clean new filter. Standard 15-amp 120-volt household circuits will safely run up to a real 1.5 hp motor. Getting good fine dust collection on our hand held tools is often a matter of using good judgment. A poor design or air leaks will kill system efficiency. Look over the reviews, then make an informed purchasing decision based on this ultimate guide. For instance, my 5" fine sander gets excellent dust collection when hooked up to a small shop vacuum, but the 5" aggressive grinder/sander made by the same vendor that looks near identical can only be controlled when used in a containment room as it will spray dust and chips twenty feet or more. The cutting shatters and launches all kinds of tiny airborne shards such as the particles shown on the electron microscope picture on the right. It separates off over 82% of the airborne dust that other cyclones pass right through, plus it provides 99.9% separation of the unhealthiest invisible dust down to 4.7-microns. Since almost all motors are designed to handle four or more times their running loads while starting, vendors can get away with this testing for a short while before the motor overheats and fails. So, when we vent dust collection systems inside into our dry shops the fugitive dust that escapes collection just keeps building to dangerously high levels. With tools designed and built from the ground up to protect and control that fine dust for collection, the prior "chip collection" air volumes work well. | Have you ever been unsure what model to buy when considering the purchase of dust separator in general? Unfortunately, bigger is not always better because once we reach that 800 CFM we need to be very careful to not use such a large pipe that the airspeed in our ducts drops too low and causes plugging or dust piles. Filter fabric makers provide guidelines on how much surface area is needed for each type of their fully "seasoned" filter material. Units are completely weather-proofed for indoor or outdoor installation. ADAPTABLE MOUNTING: The JET Cyclonic Separator inlet and outlet fits standard 4-inch diameter hoses, and can be placed on the lid (bin connection diameter is 5 inches) of almost any size container. In simple terms air volume defines how big of an area we can collect from, so the more area we need to provide collection for, the more air volume we need. all act just like a water valve and kill airflow. Small shop dust collection purchases show a serious lack of knowledge and high influence of vendor advertising efforts that recommend inappropriate and marginal solutions. Although we make fine dust by the pound just two tiny thimblefuls of fine dust cause a large two-car garage sized shop to fail all of the different air quality tests both by weight and particle counts. Your design must use large enough ducts to support the needed air volumes without being too large and killing the air speed needed to prevent clogs. Almost all hobbyist cyclones are downscaled versions of commercial cyclones engineered to use very high internal turbulence to break the finest dust from the heavier sawdust and chips. Those with no ducting who move a 10' flexible hose between machines end up with about 4" w.c. resistance for their systems. One person is only allowed to blow and the other to only suck. For wood dust and chips, careful testing shows airspeed of between 3700 to 3800 FPM is needed to pull in the chips and heavier sawdust from our machine hoods. We all know when we put on vacuum hose on the blow port we can blow dust all over but that same hose when sucking will only pickup next to the nozzle. Almost any air movement from our dust collection equipment, tools and air compressors launches this finest dust back airborne. The American Society of Heating, Refrigeration, and Air-conditioning Engineers (ASHRAE) certify independent labs to test filtering material. Most small shop vendors that advertise "fine" filters only provide a false sense of security. This is why we are here to help! A pressure sensor detects when a filter clogs too much and institutes an automatic cleaning cycle. Continued exposure over time causes us to become more and more sensitized with ever stronger allergic reactions leading to health problems that eventually become chronic and potentially very serious. Almost all hobbyist blowers are standard material movement pressure blowers and almost all are turned by fixed speed 3450 rotation per minute (RPM) motors, so all have very similar efficiency. Fine spun bond polyester filters let us use the least area, but tend to be expensive compared to blended filters. These units should be only be used outside without any air returned to our shops. Maximum airflow only happens when we have no ducting, no filter or a brand new clean very open filter, and a special test pipe. Although many mistakenly think of their dust collectors as giant vacuums, they really are not. Kindle Unlimited Membership Plans If your smaller tools spray fine dust all over like my electric and air powered sanders, then you need to provide better dust controls and often move far more air to capture the fine dust particles. Filter makers also provide the airflow and filtering levels for fully seasoned filters so air engineers can properly size outdoor filters. This makes for terrible air quality but avoids the upset of customers having to constantly clean and replace fine filters. They were kind enough to allow me to share their proprietary airflow tables to counter some of the massive confusion over airflow requirements for small shop woodworkers. The five-caster base makes it exceptionally stable and easy to maneuver around the shop. Worse, most filters contain large amounts of polymer materials that build up large amounts of static as we run air through the filters. Laguna Tools is a premium manufacturer of woodworking and metalworking machinery. Air engineering testing shows that even with the best recommended changes, we really do have to move this additional air if we are going to have successful fine dust collection. Opening just one small pipe limits the airflow far below what we need to keep the mains clear. Although this advice from friends is often sincere and meant well, it just cannot be trusted; and. If you don't use two pickup hoods on your same tools as shown in this table, you need to follow the song's advice and change your evil ways! 2022 Laguna Tools - All Rights Reserved. When we use our shop vacuums they only pickup up right next to the end of the hose. Even with clean filters, at working airflow levels many hobbyist filters pass dust twenty to thirty times larger than advertised turning our blowers and air cleaners into dust pumps that recirculate these unhealthy fine particles; Tools are often advertised and come with ports and such that make them look like they have good fine dust collection built in. A typical two-car garage sized shop contains less than 100 cubic meters of air (about 90 c3), so just 10 milligrams of fine dust launched airborne will cause an average shop to fail an EPA air quality test. Comes with a 36" flexible 2-1/2" hose. As a result most hobbyist dust collectors, cyclones, vacuums, and air filters provide less than half the advertised airflow and nowhere near the airflow needed for good fine dust protection; Motors for an instant while starting draw four or more times their maximum working amperage. Dust piles in the mains are a fire just waiting to happen and pose a potential explosion risk. With smaller models, such as our B|Flux and C|Flux systems, we offer options that are perfect for hobbyists, while our larger, more powerful systems serve as excellent industrial dust collectors. During the one to three years it takes a small shop filter to fully season the filter freely passes the fine unhealthiest dust leaving our lungs to do the fine filtering. Any restriction, small machine port, obstruction, or even sharp bend kills airflow just like opening a water faucet a little. There are a lot of concerns with the airfoils that need considered before going that direction. The one who blows always wins because they move a directed stream of air that can push that balloon all over. This means we can use just about any material movement blower fan table to pick the smallest blower that will meet our needs. To comply with 1989 government standards to also provide good fine dust collection, these same large equipment vendors and university staff went back to work. As a result a poor design, undersized pipes, rough ducting or flex hose, sharp bends, etc. Additionally, as this resistance rises it causes the pressure inside the filter to increase. The renowned brands are more concerned about maintaining their reputations, while others are not. that will blow unprotected fine dust all over. The actual filter performance will then vary between the indoor rating at worst and a fully loaded outdoor rating at best. Following are some of the factors we consider: If you purchase an unreliable brand just because it is cheap, what will happen? Even "old salts" meaning long time woodworkers don't have a clue as to what is really needed for fine dust collection without doing a bunch of homework. Includes a 36'' flexform connect hose. We can open other gates or use special weighted trap doors called hyperbaric dampeners that will open when the pressure grows too high to avoid these dust pile problems, but most find we get the best dust collection when we use all the same sized duct pipe, tool ports, and flex hose to prevent these problems. I do not understand how engineers can design a product that is larger at the top than the base and still expect it not to tip over no matter how many casters you put under it. That same test killed the performance on the best dust collectors by choking their airflow with too small a test pipe. We close off all but that one run using blast gates. Those with tiny shops and minimal ducting can get by with 1.5 hp motors and efficient cyclones, but most need a 1.5 or larger dust collector that gets put outside.
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