SWMBO first, soap eventually. Would such a small system work, in your opinion? For short runs I think it will be fine, but for long runs you might not have the power to maintain 4000 fpm necessary to pull the finest dust. Thanks I have a 2Hp 1200CFM DC. Not quite done yet but what a difference hen you get big pipes and a powerful blower. Note: If a machine has multiple dust ports, the total CFM is the sum of all ports. Watch the next newsletter for specifics on how I optimized dust collection at various tools in my shop. Wish I had read a a long time ago. This process requires flanges to be fitted over each end of the pipe, the edge of the duct is then vanstoned to keep the flange in place, and lastly, flanges are bolted together to join pieces. Thanks for reaching out with your questions. Hi Bruce, Yes, PVC is available in 8, but depending on what supply houses you have in your area it might have to be special ordered. How to Size Dust Collector Ductwork? How about a shooting range that needs ventilation for gun smoke? Its not as quick as using the coupler, but it is not too bad. Earthing? If I have three separate lines, Id need a 6-4 reducer going into each of the three ports on the collector. I have used PVC for 15 years at least with no problem. This was exactly what I was going to do until I put my lawyers hat on and started asking questions. Maybe remote. He has a Delta 50-761 (2100 cfm, 2hp, 8 in-H2O static pressure drop). Typical metal ductwork can dissipate this fairly easily, as it is often attached to metal building structure parts. Just like working in your shop for 20 years with no problem, or driving 50,000 miles with no accident, does not mean it cant happen to you. So, you will have to make your own ports, and in some cases, cut holes in your tools to accommodate the port. Pretend you are designing a race car track, and you want to keep the cars going at high speeds into the turn, because once they slow down it is hard to get them moving fast again, and we want to avoid a pileup of cars, or in our case, dust. On my third now and it works great. If you have chosen a dust collector with enough suction for your shop configuration, then the simplest approach with PVC is to run 6 pipe wherever it is feasible, and 4 pipe wherever you find it necessary. Hi Ted. We have provided solutions for these applications and many more. Ensure that each machine is continuously grounded to the dust collector frame with a ground screw, as shown in Figure 40. I believe that to be a drop of 1/4/ft. Step Five: Determine The Size Of your Ducting. Thanks Bigger is better until you get below that threshold. Im still flip-flopping over which piece of PVC (pipe or fitting) I want attached to the flex, based on what is going where in the shop and how much moving will happen. Your target is 4000 ft/min, and youll start to have serious problems at anything below 2000. Tax & Credit Forms |
If you use PVC, particularly 6 where there is so much overlap at the joints, you shouldnt need to seal most of your joints. We advise against using duct tape, its unsightly, the fabric deteriorates and it doesnt have elasticity. Grounding PVC and Other Dust Collection Myths by Rod Cole: http://home.comcast.net/~rodec/woodworking/articles/DC_myths.html Source for those hard to find PVC fittings: http://www.pexsupply.com/PVC-Fittings-470000 Source self made blast gates: http://benchmark.20m.com/articles/BlastGate/blastgatebuilding.html Thanks, Brent, Hi Brent, I would be skeptical of a CFM rating that high on a 4hp machine, as many manufacturers use highly inflated CFM ratings which are probably based on a theoretical max, or something like that. On vertical runs, and some horizontal runs where connections are slightly loose, I put a couple #8 x 1/2 self tapping sheet metal screws into the joint to hold it securely. Installs in less than 1/2 the time of standard flanged duct systems. They only cover metal ducts that are grounded. Every major shipping carrier serves our Woodbridge, CT. We are knowledgeable about shipping rates and carriers to different parts of the country and world. Beginning February 12, 2021, Nordfab will include a 25% materials surcharge on all products. Over 90% of stock orders can be shipped within 24 hours or less. As far as piping that dust collector for 6, it depends on the actual CFM capability of the system (most DCs are rated much higher than they actually deliver), and the length of your duct runs. This Straight Pipe provides rigidity and smooth inside walls for strength and efficient dust collection. O is for Open. If 6 is the way to go why then dont the stores sell fittings for this size.go figure! If it is still tight you can warm up the flex tube a bit with a heat gun. Because this type of hose has a rough interior and flaccid nature, it causes substantial static pressure loss resulting in higher energy usage which can affect system performance. Paul, thank you for some very helpful advice. Travis. My shop is located in a basement and space is tight so I have to use the manifold. If machine two has a dust port that is 3" when it connects to the main duct (where the 4" duct from machine one connects), you will add the CFM from the chart:
Also, I suggest installing a couple extra elbows at various places in the system that can be used to inspect the ducting for dust build-up. A remote control really helps. 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. Wont make any difference with air. up. On metal you will likely need to seal the joints to minimize leaking. They have a wide flange to allow attachment to the housing and given they are thrown away weekly its hard to beat the cost. Its slippery enough, and once it dries its stickier than using nothing. Nordfab quick-fit is a clamp-together, modular ducting system where each section of duct has a rolled edge that is easily joined with a simple and tool-free clamp. Thanks for stimulating me to work on this more, and for everyone elses safety. Air Handling Systems is proud to support many industries by holding memberships in the following associations. Copyright 2022 Grizzly Industrial, Inc. Sign up to receive Grizzly.comemails and specials. However, if the machine can be isolated with a blast gate, you will not need to add the two air volumes. 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. I go back and forth from tool to tool so frequently that I am nearly certain I would make many quick cuts without dust collection if I were setup that way. Do not forget to connect the, wires to each other with wire nuts when two branches, Ensure that the entire system is grounded. at Ys and Ts should be made with wire nuts. is this the maximum duct size that i can use or should i still use 6 for the main runs and 4 for the branches. Would 2 PVC piping work when connected to a 12 gal shop vac? They sell plastic hangers for the ABS pipe that is convenient to hang my pipe, instead of attaching the plumber straps. Toward my goal of oversimplification, I offer the D.O.G. Normally you can remove that and have a single 6 (or whatever) larger port. In answer to your first question. In a separate article I will walk through the dust collection design at each tool in my shop to help you complete your dust collection system design. The branch would be sized at 5-3-4, with 5" being the largest reducing to 4" with a 3" branch going out the side at 30 degrees. Therefore it is important to have your duct layout in mind when you buy your dust collector, and have your vendor suggest a model that can deliver enough suction at your tools. If you have trouble slipping the flex tube over the PVC just cut some slits into the PVC as you see shown in the 2nd picture in this article. Nordfab dust collection ductwork includes fittings and pipes that range from 3" - 24" in diameter and feature double-rolled connecting edges that clamp into place to provide heavy-duty seals. Im planning to use 6 ducts to the tools, and 4 for the vertical runs to keep the velocity up. Basically, I have a 10 table saw, a 10 miter saw and a small router table that I want to connect to such a system. 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. Now you want to make sure that you are doing everything you can to get the most out of it. Yes, that sounds better. Tool ports. This can also provide a nice cleanout in a convenient location should something ever get lodged in your ductwork. You are probably better off going with 4. I would encourage you to do some research on the specific machine to see if any owners are using pipe larger than 6, and see how their performance is. After viewing product detail pages, look here to find an easy way to navigate back to pages you are interested in. You might get by with the HF unit, but it would be borderline. X-Treme Tape, Self fusing silicone rubber tape 20 ft. roll, $14.99 Id be interested in hearing how it works. One of the other members here wrote that he saw and felt a very large spark when he was dumping his bags. 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. Once again, many thanks for the informative discussion. Im not an expert on the volatility of wood dust and the practical likelihood that it will explode when exposed to electrostatic discharge, but I just havent seen evidence to suggest that it is likely under normal conditions in small shop dust collection systems. Are you a Chemical or Allied Product Manufacturer with processes that generate fumes? I enjoyed the topic of dust collection system, I like to know more to see if I can design my own systems. Moving air causes enormous amounts of static electricity. Does that sound better? Thanks Pharmaceutical manufacturers need special flexible hose for clean rooms. I also think that if you stick with woodworking long enough you will eventually upgrade your DC and add a ducting system, so if you believe that you will be doing woodworking in your current location for more than a year or two, I would consider biting the bullet now and getting into a system that will meet your needs for many years as it will actually save you money in the long run and give you a better experience up front. I got a great deal of information. Sounds like a great system and really quiet. I just keep going back and forth what to do off the main. Paul-Woodworkers Guild of America. If it is super tight I would cut a slit into the flex, cutting through a couple strands of the wire that wraps around it, and that should help you get it started. Velocity is high enough to move dust as well as planer chips and lathe shavings. Can be taken apart and reconfigured quickly and easily. And Ive been searching for awhile. If flanges are not placed perfectly, duct segments will not align resulting in an unprofessional appearance and higher static pressure loss. End Matchers | Feeders/Conveyors | Finishing Equipment |
Our on-site staff will follow the appropriate best practices and guidelines set forth by OSHA's latest release of "Guidance on Preparing Workplaces for COVID-19.". Usually when we see a cloud of dust in the shop, we think about not breathing in too much of it. We have solved the dust collection system affordability problem. grounding terminal in your electric service panel. What Are the Different Types of Dust Collector Ducting? 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. Remove the old ones with a razor knife, then lube up the new ones with a little liquid dish soap. Ive had a 2HP cyclone dust collector for years, its a collection of home improvement store galvanized pipe (probably a combination of 26-30 gauge, I never really check) and high quality smooth elbows and wyes purchased from a variety of mail order sources. If you are going to run 6 then it wont be wise to use the 4 ports on the DC. Simple method of small shop dust collection ductwork design: First you need to choose a material for your duct work. True, a large pipe has less resistance, but a smaller pipe allows for faster air travel through the pipe. To determine CFM, measure the diameter of dust ports and use this chart to estimate your machines CFM requirements. Paul, I just got around to trying a friction fit with the 6 coupling and the flex. Attach using 1-1/4 drywall screws. As a manufacturer and distributor of Air Cleaning, Ducting, and Filtration products we are proud to have been identified as an essential business. I would be interested in seeing your shop made blast gates if you are willing to post a photo of them in the Forum area. I think this will definitely be the way to go. Hi Noah. Our phone lines are open from 9am-5pm central time, Monday through Friday. I love it! Air Handling Systems based in Woodbridge, Connecticut, manufactures dust and fume collection components including industrial ventilation spiral pipe; warehouses and distributes various flexible hoses, for a variety of commercial and industrial applications which include woodworking, aerospace, paper, pharmaceutical, chemical, plastics and HVAC. G is for Gentle. Keep in mind the ceiling height, obstructions, electrical service, etc. Example: A system where the main trunk line is 6" in diameter (representing 615 CFM) is connected to a machine that requires 395 CFM (4" diameter), you would add 615 + 395 = 1010 which would require a 7" duct. I like these much better than commercially available quick disconnect systems, plus I have not seen commercially available quick disconnects for 6 ducting. The results were quite interesting when I tested before & after my Clear Vue upgrade: http://local.wordpress/articles/product-reviews/stepping-up-to-better-dust-collection/, Hi Paul; heres an update on my comment from a month ago. My guess is that a dust collector with a 5 inlet will not move enough air to maintain adequate line speed for 6 pipe. Good luck, and work safe. Can you tell me what dust collector this is? Although my shop is in the painting stage, I can assure you I will be implementing the ideas in this article. Return Policy |
Where can I find all of yours. It can be used with a 9 inch manifold with 4 4inch fittings or by removing the manifold and the connecting the DC directly to the main. 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. frame with a ground screw, as shown in Figure 40. I want to make piping for my 1200 cfm dust collector. As you state regarding PVC/ABS pipe dust collection which places extremely low pressure the negative pressure is way too low to collapse anything. Before you say, I cant afford a dust collection system or fume collection system or I cant wait months for delivery, we can help you make it possible! They fit right in four inch vacuum hose and their only shortfall is the two 3/4 inch square slots they cut in them for some reason. cause an explosion and subsequent fire inside the system. Wire connections. Another way to do the quick disconnect is to use the bell connection at the end of the PVC pipe, rather than the coupler. Im opening a shop and will be doing this in the next couple of weeks, Shop By Brand, Machinery Repairs |
Youll probably have to use metal for your first transition. But dont wait until your homeowners insurance refuses to pay for your claim, if you are alive to deal with it. I placed a blast gate at each machine along with a pushbutton start stop station. The fit probably wont be perfect, so youll have to adapt by wrapping with duct tape or similar. It is not that hard, and it is well worth the effort. On the 4 it is a bit looser, so I have used duct tape to secure it. I disagree with your suggestion of using screws whenever possible to secure joints. I use a remote control that was provided as an accessory from Clear Vue Cyclones. We are shipping orders on time, with no delay in manufacturing. If using plastic, blast gates to direct air flow, the grounding wire must, be jumped (see Figure 41) around the blast gate without, We also recommend wrapping the outside of all plastic, ducts with bare copper wire to ground the outside of the, system against static electrical build up.
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