Press question mark to learn the rest of the keyboard shortcuts. The one saving factor with this is the flapper in the filter actually works to dislodge the sawdust into the collection bag The bag can be easily emptied into the bin and it all can be wheeled out of the shop. This is a great way to go for a shop where the collector is sized correctly but the filter needs to be cleaned too often. Not really a real world scenario but interesting regardless. In the end, what Im really interested in with these CFM readings is the change in airflow throughout the various cases. The other thing I still want to change is how the lid attaches to the collection barrel underneath. A small Fein shop-vac can provide up to 100" WC of suction, which would be 11-12 times higher than your dc. In your case, you're probably only operating one machine at a time. Some worked better than others. That would allow you to have the plenum overhang the blower. They are all identical, except for color and the rims have nice flat parts which make them very suitable to adapting to a cyclone collector top. I have some unique space constraints. Behind the 6" blower intake, some versions of the dc-850 have a 5" restrictor collar. The one trade off is that since the separation stage adds load to the system, the maximum air flow that the collector can pull will be reduced. Hooking the cyclone to the existing ducting was pretty easy. If you want to save space, you can make the bottom hole of the plenum at one end of the plenum. Often these are barrels or large canisters that easily detached thus, also helping to reduce the dust collection in the room. Do you see any problems with this setup or ways that I can improve without a lot of cost? Moreover, watch for deals on this website and eBay for a quality used one. Use a minimal amount of elbows, and try to use 45's wherever possible, rather than 90 degree. We are the Micronics Engineered Filtration Group, committed to your success. So performance was alright. In fact, you might now be pulling only 400 cfm. Also, does it have the 6" intake? So the body of any collector would need to fit under these rails and a motor or something narrow could fit up between the rails but under the ceiling height. The next space constraint is the area the collector goes in and the way my ducting enter that area. If you use vertical drops, your dc has to be able to pull close to 800 cfm in order to get that 4000fpm velocity. That 400 cfm is fine in the 4" pipe, since velocity will be high, but once that 400cfm reaches the 6" portion of the duct air-speed will drop by half, to roughly 2000fpm. The body of the collector come partially assembled. More of a curiosity than anything else. I notice another Fine Woodworking article Dust Collection for the One-Man Shop #141Mar/April 2000 Issue claiming that PVC pipe has 3 times the friction drop as steel pipe and the author conducted tests that supported the claim. Your dc will draw less air. It isn't that I am having trouble from the motor. The 3hp JDS is always on backorder so I decided to go with the Laguna since it has better availability. That same 800 cfm would have to travel at more than double the speed through that 4" restriction. Is there a particular reason for not upgrading the motor to one with more hp, or is it just that nobody has done it. Mike Farrington demonstrates how these simple clamps will help you apply edge banding like a pro. Rectangular or square, approximately 6x6 inside. All this sawdust is from dust leaking out of the collection bag if the bag get nicked by something and tears slightly. From contributor M: Also, would I improve my suction much if I went with two filter bags (one on top and also one on the bottom instead of the plastic bag)? 2022 The Taunton Press, Inc. All rights reserved. Over the years I have amassed a small collection (3 or 4) of identical, plastic garbage cans, of good quality. Ideally, Id need a collector where the inlet could be rotated to be perpendicular to the long axis of the collector. Matt Cremona. Keep your ducting efficient with a small dc like this. I then repeated these reading after cleaning the filter to establish a best case scenario for that collector. Nice system, but I'm a little surprised you didn't investigate (or maybe you rejected and just don't mention it?) The purpose of a dual or 2 stage dust collector is try to make the air cleaner by trapping more dust in the first stage of the dust collector which turns out to be the cyclone part that was added on. I installed a reducer by screwing it to the inlet and sealing and smoothing the transition with silicone. I had to make sure the cyclone was sealed to the wood, and that the wooden top could seal tightly to the plastic garbage can bases. I was just curious if it was possible to get a motor with more hp, and at the same time remain safe. We look forward to working with your team. I established a baseline of what Im typically experiencing and used to by taking measurements with my old collector before changing anything. My dad helped me move the cyclone into position. Join Mike and dive into information overload Drop me a line and ask a question about Urban Logging, Woodworking, or my beard. I bought this single stage dust collector when I was in my only shop back in 2010. You could even add a couple of legs to that overhanging plenum, going down to your dc's dolly. The ring-clamps with o-rings are not only air tight, but so simple to take apart and reassemble if you move/add/sell tools, move the whole shop etc. The one thing that hasn't changed is that we all pretty confident that wood dust is not good for us to inhale. Here's an example: Let's say your 6" pipe is pulling 800 cfm. Next I wanted to test the real world separation ability of the cyclone because the biggest disadvantage of a compact cyclone is they are not as good at departing than a full sized tall cyclone (or so Ive heard). I went around and opened each blast gate one at a time and could hear a rush of debris heading down the pipes. I discovered that the smaller dust collectors are not suited for what you are trying to do (not enough cfm). Sign up for eletters today and get the latest techniques and how-to from Fine Woodworking, plus special offers. That will lead to clogging in the main duct. Since two 4" pipes is roughly equal in area to a single 6" pipe (about 90% actually), you'll create little extra resistance, and you'll pull enough air to properly feed the 6" pipe. If you have any size changers on your collector that you need to reduce or expand the sizes, it's recommended that you use aluminum ducting tape (not fabric duct tape), to also help reduce any chance of air leaks. One important detail. Always use 45 degree take-offs in your ducting if possible, instead of 90 degree, etc. Further, adding elbows also increases resistance. In-House Pressure Filtration Laboratory Services, Vacuum Filtration Field Maintenance & Repair Services, In-House Vacuum Filtration Laboratory Services, Process Auditing, Consulting, and Vacuum Equipment Optimization, Custom-Engineered Solutions and Baghouse Retrofits, In-House Laboratory Testing Dry Filtration, Leak Detection Powder & Inspection Lights, Baghouse Retrofits, Rebuilds & System Upgrades. I also had the issue of the cyclone exceeding the maximum on the meter when I took readings on the planer and table saw. Make your rings 1 1/2" wide. Again, I doubt the actual dB reading is accurate but Im really only interested in the % difference. Here are a few tips I have picked up along the way. My understanding is that tight angles reduce air flow. Press J to jump to the feed. Very inexpensive to do, as well. The Micronics Engineered Filtration team excels in expertly custom-engineered Air Pollution Control (APC) Solutions including economical Baghouse Retrofits, Rebuilds & System Upgrades. It would help when removing this part to break up the styrofoam holding it to the bottom of the crate. To calculate the CFM based on the air speed reading is pretty simple. No chop saw needed. With that test out of the way, I emptied the filter bag into the drum and I could empty it for the first time. In normal cases, the cyclone has to separate a small steady stream of sawdust but when sucking up large masses of debris, huge amounts enter the cyclone all at once and larger quantities dont get separated out and pass right into the filter. That's where it *should* be. The only cyclones that fit this constraint are the compact/mobile cyclone which limits me to the manufacturers that make that style of collector. Home > Dry / Baghouse Filtration > Services > Baghouse Maintenance & Repair Services > Retrofits, Conversions & Upgrades. I took the initial airflow readings which will represent the typical case and took the filter outside to clean it. I am thinking about putting the whole thing on wheels so it can be moved around if needed. Go with 1 micron filters. All rights reserved unless otherwise provided as noted, please report any copyright infringements to the email noted elswhere on this site. In the end, I took the knowledge I picked up from reading and made the best decisions I could relative to my shop and layout. I only ordered the cyclone part, not the dust collection part because I wanted to set up my own collectors so that I could add more as needed. If you have that 12" impeller, you'll get a dramatic improvement in flow, simply by adding a second filter-bag. In a horizontal main, you only need 3500 fpm. 2014-2020. Get woodworking tips, expert advice and special offers in your inbox. In my view dust collection is extremely under-researched, especially for the small shop. That restriction will come in the form of your ducting. There are several ways to go about this. And after all this is done, you finally get a chance to test the system by cleaning out the 2 stage of your collector and seeing what it can do. All in all I am very happy with the system. I also tried to get a reading at the collectors inlet but the air speed exceeded the range on my meter after cleaning the filter on my old collector. CFM = Cross Sectional Area of the Pipe (in sqft) X Air Speed (in ft/min). The same was true when I bought the 6-in. Locate tools as close to the dust collector as possible. Whether for your Filter Press, Belt Press, Leaf Filter, Vacuum Filter, or Baghouse, you can count on Micronics deep industry and applications knowledge for the right engineered filtration solution to meet your needs. Take a look if you are so inclined. Both of these set ups wouldnt be that practical given the space I have for the collector so I opted to only look at collectors with adjustable inlet angles. Moving more air is one thing. No pipe dope, not crimping, no pop rivets. When ever you are working with dust collectors it is imperative that they be as air tight as possible, otherwise their efficiency drops drastically. Remove that collar, otherwise you won't be able to use your 6" pipe effectively. You really shouldn't ever reduce the size (diameter) of your duct. Dust Mask: http://amzn.to/2y8dl1m To save on MDF, instead of cutting full 20" circles, you can make half circles. Job Opportunities and Woodworking Services, Dust Collection, Safety and Plant Operation, Dust Collection, Safety, Plant Management. But do your research! WOODWEB is a registered trademark of Woodweb.com. All I had to so was to make a base for the cyclone collector to sit on, which I did with a couple of layers of plywood, the bolt the cyclone top to, making sure it was well sealed. Creating Roof Slopes with Tapered Insulation. Hearing Protection: http://amzn.to/2yQ0sa3, Welcome back to our home renovation addition project. That can be achieved in a 6" pipe, with as little as 685 cfm flowing through the 6" pipe. I think that long runs of flexible hose will be cutting down the efficiency because of the corrugated surfaces inside. Buy your ducting from a local professional supplier. Thank you for reading. The drum comes a sheet steel that gets screwed together. As it is now, I can not use more than one collection system at a time. It ran along the back of my bench where the majority of the tools were located, so it was about 16 feet long. PVC. Is it OK to copy projects from the magazine? You have to consider which is your most demanding branch in your duct network. Watch the assembly video and shave a couple hours off of the assembly time. Old Collector (newer version): http://amzn.to/2iUtItN The most difficult part of the assembly is standing the unit upright. Suction is nowhere near as strong in a dc. I also took the same readings with the cyclone hooked up to the system. Finally, the weather has turned to something tolerable! Nordfab or other quick connect ductwork. 10% off in stock chair kits with coupon code CHAIRS Dismiss. Maybe two layers thick (1/2" each). I still wear a dust mask and probably always will, you can never be too cautious about inhaling dust the less we inhale the better. Butt them together. If you decide to do the blower modification (removing 5" restrictor, behind 6" intake), then just replace that plastic lower bag with the 1 micron filter-bag. If you want to use your pre-separator with a 6" lid outlet, do so, and simply leave your dc alone. I milled some boards down to produce one bin of shavings and a lot of stuff made it through the cyclone and into the filter. Today is the start of a very exciting thing: converting our wall of OSB to a wall, Welcome back to our home renovation and remodel project. My shop always seems to be in a state of re-arrangement so having all my tools on wheels is important. Some have included a 12" impeller. If that is the case, and you'd like to use the lower plastic waste bag, then you can add the plenum, with the two top-mounted filters. Remember, dc's are "air movers." The joints get screwed together with self tapping sheet metal screws and once Im done changing some of the other pipe out, Ill seal the seams with foil tape. We will see if it holds up over time. Become an UNLIMITED member and get it all: searchable online archive of every issue, how-to videos, Complete Illustrated Guide to Woodworking digital series, print magazine, e-newsletter, and more. I noticed you have some tight angles where the flex hose attaches to a machine (jointer, bandsaw, table saw blade shroud). Is this normal? Converting your existing equipment can typically be done for around half the cost of replacing it. There are no serious weight or pressure issues. That will reduce flow in the 6" main. PVC piping, and I purchased materials from a landscape supply house. This will avoid vertical drops that require 4000 fpm velocity for appropriate particle suspension. The cyclone also comes with a splitter that reduces the inlet to 3 4 ports. In my case I have added and Oneida cyclone style collector to my existing dust collector. With all this sawdust on the floor, I first wanted to test how easy it would be to overwhelm the cyclone. I turned the cyclone on for the first time and could hear stuff rattling through the pipes towards the collector. Try it out. Similarly, did you look at Gripple hangers? Today is a pretty exciting day today because look what was delivered! I dont know about spiral ducting, but the steel Nordfab ones are easily cut by drilling an access hole (twist bit), inserting a hand held jig saw (metal cutting blade), and rotating the pipe into the blade. In-depth articles, up-close photography, and detailed illustrations. Ive found that duct tape over time tends to work its way loose. It would be much cleaner to run a bead of silicone on the seams before screwing the parts together. All rights reserved. This site is protected by reCAPTCHA and the Google, Used tools are this woodworkers best friend, Editor's Letter: Technology and the future of woodworking. I used flexible plastic tubing designed for dust collectors. Here are some of the mods I have seen: Jay's Custom Creations, Lumberjocks, Lumberjocks 2, Charles Tubbs' mod. I was very happy with mine. Side note: I found that for pipe larger than 6 in., it was much more cost-effective to go with spiral steel pipe vs. PVC; the 8-in. Total cost of modification = 1 filterbag. With the Micronics Engineered Filtration Group, upgrading your existing system from a Mechanical Shaker or Reverse-Air Dust Collector to a Pulse-Jet Dust Collector may deliver much-needed benefits such as improved collection efficiency, increased filter bag life, and reduced operating costs. A few months back I found a great deal on a 5-hp cyclone dust collector on Craigs List. Those two 4" ducts will feed roughly the same amount of air as a single 6" pipe. For smaller shops like mine, a typical dust collector is often a 1.5 and up to a 3 horsepower electric fan that draws dust from our machinery and deposits the dust it into a plastic bag while using an upper cloth bag or composite canister to filter the small particles of dust and return fresh air to the room. Fortunately, that dc has manual thermal overload protection. If using a spiral or snap-lock pipe, use duct sealant. Last, you can check for leaks by running your system and holding a candle under the duct joints; the smoke will get pulled into the poorly sealed joint. If that's not clear, let me know. Love the Simpsons reference in the name caption :-). Downstream, it's perfectly fine to have a 6" drop splitting to two 4" ducts to serve smaller machines like a router-table, etc. For this installation, I decided to try using a brushable duct sealant rather than duct tape. The screws are much longer than needed and sharp. Later, once you've ducted the dc to your machines, you may find that you have plenty of suction. The articles found in this collection cover all facets of dust collectionfrom finding the right dust collector to getting the most out of your current collector, from organizing your shop for efficient dust collection to designing a ductwork system. There are a few changes I still want to make on my system. This bin also needs to be sealed with silicone. I don't know much about dust collection systems and want it as efficient as possible with my current resources. On a small dc like yours, there is not much room for static pressure loss. In order to do that, you'd have to make a plenum. ductwork, I really think PVC is a great material. The selection process for me was pretty straight forward. The Excel file for these results is also available. When we convert/upgrade your existing baghouse equipment, we will typically leave the inlet piping, electrical cabling, and foundations intact, resulting in substantial cost-savings over greenfield installations. That would allow you to mount two 20" diameter filters side-by-side on top of the plenum. Looking at these results, Ill have to empty the filter bag once for every 5 drums of sawdust I collect. This time I went with 8-in. That plenum would be a simple box with a hole cut out of the bottom, and mounted where your present filter is mounted. You could also mount both filters to the top of the dc, and keep the plastic lower bag. And is there an easy way to test the system for leaks, suction, etc? Shop size won't necessarily dictate what size dc you need. Since the motor stuck up higher than the garage door rails, it had to be tipped and rolled into place. These are often not the best, but for many of us they are best we can afford and install, and in recent years they are actually doing a pretty good job.
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