Home > Dust Collection > Air Filtration > Air Filtration Machines Rikon 3 Speed Air Cleaner 400 CFM Jet Air Filtration System Model AFS-1000B Benchtop Power Carving Dust Collector RIKON 3-Speed Air Cleaner with Remote Control Model 62-100 Jet Air Filtration System Model AFS-2000 SHOP-VAC Portable Air Cleaner Powermatic Air Filtration System PM1200 AirMaster Heavy Duty Belt Driven Mobile Filtered Fan Model 39181Proper air filtration is an often overlooked safety feature in many workshops. Most woodworking tools are setup with a vacuum system, but for those that don't have one, a mobile air cleaner cart can work wonders when it comes to providing a cleaner environment.Jay Bates has found a way to repurpose an furnace blower into an air filtration device for his shop. He built a frame around the blower from plywood and 2 x 4s, and attached a switch to control the fan. The air filter panels are Merv 13 rated and are ideal for those with moderate to severe allergies.

They will provide more than enough filtration for his workshop space.Jay's reasoning for building this air filter on a rolling cart as opposed to a traditional ceiling mounted system is that he wanted a unit that he could bring closer to his lathe and other woodworking tools that didn't have great vacuum systems. He's diligent about wearing a respirator mask, but this tool makes it even less likely he inhales any particulates from his work. Visit his website for the full build tutorial. DIY a Dog Toy Out of Empty Soda Bottles​ Projects and Plans How To Build a Halloween Coffin 6 Handsome Cutting Boards Anyone Can Build 25 DIY Projects to Tackle Before Summer Ends Make Your Own Optimus Prime Prop and Save the Universe You Can Build a Wooden Ammo Box From a Pallet Spruce Up Your Sharpie With a DIY Wooden Body Add Extra Strength and Storage to Your Garage Shelves With These Simple Tips A DIY Rotating Timelapse Rig Is an Incredible Way to Document Your Best Builds

What I Uncovered When I Restored My Grandfather's Army FootlockerAir cleaner units for home workshop are getting popular these days. usually consist of some sort of blower pulling air through some filter media, usually fine filter bags. I thought I'd try building an air cleaner using a fancy furnace filter. So I bought the biggest furnace filter I could find. filter just by blowing air through it with a fan, I found that my Dylos particle counter showed much lower readings for the air coming out of the filter. So this appeared to be working. I started with the motor and fan blade from a discarded oscillating fan, the sort that costs about $30 new. In the fan's configuration, the fan blade blows air away from the motor, but the way I wanted to use it was to have the fan blow air towardsIf you mount the fan blade backwards on the rotor, its screw-action still blows air away from the motor. The motor itself needs to be reversed

Oscillating fan motors are usually split phase (capacitor run) motors,air purifier for cats reviews which can be reversed electrically by connecting power to the other leg ofdiy plant air purifierHowever, only one leg of the windings has the multiple tapsair purifier making clicking noise for speed control, so I reversed this motor by flipping around the whole stator with the windings instead. the motor's shaft and rotor and inserted it the other way around, then flipped over the whole motor. While I was at it, I also cut the shaft to just the length I needed. I made the box for the fan from some boards of silver maple that I milled on my sawmill last year. My moisture meter indicated it was sufficiently

screw advance box joint jig to join the corners. Not that they needed to be that strong, just that it was expedient to do it with my jig. I cut these with multiple cuts of a regular saw blade, so I don't even need to put in a dado bladeWhen I cut the first set of ends, I checked the fit against each other, and it was a bit tight. So for the second set of fingers, I turned the gear by just 1.5 teeth further on each last cut for each slot (for an extra .010" or 0.2 mm). I wasn't aiming for a super tight fit since I found that more glue in the joint can make for a stronger joint Gluing it together, using my clamping squares to hold it square. I built an H-shaped frame for the motor. The ends of the H are joined with doubleDouble tenons weren't really necessary, but while I was already using the box joint jig, I figured I might as well cut the ends of the cross piece as a double tenon. I then cut the double mortise with my slot mortiser.

Both jigs use 16 TPI threaded rod for the position control, so getting the spacing exactly the same for the mortises and tenons wasn't any extra effort. The H is suspended in the box using wide "rubber bands" cut from a bicycle inner tube. That way, any hum from the motor aren't transmitted and amplified by the enclosure. Note that the hole in front of the fan is slightly smaller than the actual fan blade. I figured that way, centrifugal force from the air swirling would, maybe, add toCertainly, these oscillating type fans don't produce any significantI measured a furnace blower to produce about 16 mm (of water) static pressure, whereas I'd guess this fan would at most produce 2 mm. So a furnace filter might have a bit more air resistance than is ideal for a fan like this. But then again, the new furnace filter didn't restrict the air flow by much.Seems to work just fine. My box doesn't actually enclose the filter (no real need to), so to hold the filter

in place, I added some slats, or prongs, to hold the filter against the box. Two rubber straps, also cut from bicycle inner tube, hook onto screws to hold the filter These aren't terribly strong, but the filter is light and the air pressure is low. For mounting, I made two L-profile pieces of wood and screwed these to the joists Two strips of wood, screwed to the sides of the box slide into these L profiles to hold it up. The air cleaner is right up against the ceiling. The space between the joists allows for air to flow into the top of the unit. Most air cleaners suck air through the filter, then eject it through a small port. I didn't want to stir up more dust in the shop, so I built this unit to eject the air through the filter. That way, I have a large area of slow moving air coming out instead of a jet of air shooting across the room. The Dylos air quality monitor, sitting below it, sees the particle count dropping substantially within seconds of turning it on, and the particle

count soon drops very low. But as it turns out, with slow moving air coming out of this air cleaner, it really doesn't circulate air throughout the room. It will very quickly clean the air around the unit, but if I take a reading just two meters away, even after a few minutes running, I don't see significant change in particle counts. So this configuration would work quite well for cleaning the air in aIt would make sense to mount it directly overhead, above This might be a good configuration if one was working in a large workshop and just wanted to clear the area in one's immediate workspace. But with the low ceiling height in my workshop, mounting it over my workbench isn't a practical option. So I added this cardboard chute, which directs air towards the shop. two meters away from it, I can feel a breeze coming from the unit, so it definitely circulates air through the shop. But with this configuration, there isn't the same immediate drop in particle counts in a specific area.

With the chute in place, and the Dylos meter in different positions, I found that the air cleaner will take about half the dust out of the air every six or seven minutes, then eventually settles around particle counts of 50 for the 0.5-2.5 micron count and 0 for the than 2.5 micronThe counts are particles per 0.01 cubic foot. Without the air cleaner running, it typically takes about an hour for half of the small particles to settle out. Getting mathematical, if it clears half the dust every seven minutes, that would be an exponential decay time constant of 10 minutes. Assuming the shop air mixes perfectly, for a time constant of 10 minutes, the unit has to filter a volume equivalent to the workshop every 10 minutes. about 400 square feet (or about 35 square meters), and about 6.5 feet (2 meters) high, I have a volume of 2600 cubic feet. So the air cleaner probably does a volume of about 260 CFM. Not bad for a unit that only draws 40 watts