Making a particle filter that doesn't wear out for my plasma cutter
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- čas přidán 7. 03. 2020
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When I was designing the downdraft for my plasma cutter I was concerned that it might eject too much metal dust out of my shop and into my driveway. It turns out that I was right and as I've been cutting more I've noticed a real uptick in accumulated metal on the ground. To address this problem I built a filtering system designed to remove the bigger particles from the exhaust. Since I'm not concerned with smoke and really extremely fine vapor I was able to make a "solid state" filter that takes advantage of the inability of a heavy particle to follow a tight corner. It was inspired by cyclonic seperators on larger shop vacuum systems. From the testing that I've done it seems to work quite well and I'm pretty happy with the results.
These videos usually take a ton of work and a lot of money in tools and materials. I've made a patreon if you're interested in supporting the creation of these projects: / stuffmadehere
Here's some of the tools that I use in this video:
Hypertherm powermax 45xp with machine torch: amzn.to/2zfoyAv
Hypertherm fine cut consumables (great for sheet metal) amzn.to/34SjMom
100mm linear stage for plasma Z axis - easier than building: amzn.to/3cAeEb3
Anemometer - cheap but seems to work well: amzn.to/2ROtkeL
Downdraft fans - these things chooch!: amzn.to/2VKFbM5
The best marker ever. Always in my pocket: amzn.to/3ewHGtL
Cyclonic dust collector: amzn.to/3ezyghf - Věda a technologie
‘I know how to settle a score with engineers - data’
How dare you use our weapon against us
enginerds
Lol true
I wish more people with something to prove would come to the discussion with data.
"You dare use my own spells against me pottah" - snape
My job title is data engineer. I find this offensive
Nice 'Prototype'! The most dangerous aspect of a prototype, when it works it becomes permanent. I have all kinds of examples of this phenomenon I've built! :-)
Indeed! It's still in the cutter and going strong....
@@StuffMadeHere would placing another one of those filters behind this one maybe remove the leftover particles?
We have a saying that translates to "Temporary last the longest". And it still has to be proofen wrong
@@nicolacornolti7796 Seen this my self in a battery manufacturing facility. A temporary jig made for manually stacking battery cells untill the automatic one came in became the permanent one lasting untill the facility went banco rupto.
My robotics team and our robot is the perfect example of this lol
"There's nothing more permanent than a temporary solution"
-AVE
That's a Milton Friedman quote. it's been around a lot longer than youtube
True that!
@@Hephera I'll bet that quote has been around since before Milton
@@ryandunn2930 You're right. The Milton Friedman quote is "Nothing is so permanent as a temporary government program." He was paraphrasing an old Russian proverb "Nothing is more permanent than a temporary solution," which itself came from the even older Greek proverb "Nothing is more permanent than the temporary."
@@Jivvi Is that as far back as it goes, or does it go farther?
This is a great video. I’m actually doing a PhD in particle separation. The particle Stokes number is a measurement of how floaty the particles are.; large ones behave like cannonballs , small number indicates snowflakes. Your tiny dust will follow the streamlines of the air very faithfully unless there’s a significant, consistent acceleration. If it’s consistent- like the centrifugal acceleration in I the cyclone separator, even the smaller particles (and there will still be lots of very fine particles that are dangerous) will depart the streamlines and go to the walls like you said. I recommend you build your own cyclone separator, you can change the dimensions of it to get ‘cut diameter’ you want. I could send you a book about cyclone separators, except I don’t know how to message people on CZcams and your video is from 3 years ago so you have probably moved on.
What is "cut diameter"?
@@altersami9660 With my limited knowledge I assume the relationship between the size of the seperator and the size of particles it is designed to separate. r
crazy how many people are still commenting on this video :)
@@multiarray2320 yes! always knowledge to be shared!
I’m working on designing easy to build long lasting cyclone for concrete dust. Would you be willing to help me?
He sounds like William Osman but makes stuff as well as Adam Savage, it's the best of both worlds.
"as well as" !?!?
@@operator8014 as good as, as well as, same thing.
He's indefinitely better than the pair of them
Ur totally correct,I agree
@@daeyvidd nah ur wrong
With that kind of airflow I'd be tempted to try putting a second layer in, made with smaller diameter tubing to try to catch the smaller particles.
my thoughts exactly~
I would use a layer with a bigger diameter because of less resistance. (In Front of the existing) Using rain pipes out of Metal could be cheaper for this than this aluminium tape.
smaller particles fly faster, they need a bigger diameter to get slown down and caught. What you say, means essentially, that with straight tubing (zero radius), you can filter nanoparticles, or choke airflow...
@@klausbrinck2137 Zero radius is not straight, it is a point/singularity. Infinitely small radius is very non-straight. Infinitely large radius approaches straight. In other words, increasing the radius makes it less curved, decreasing radius makes it more curved.
Anyway.. back on topic: Smaller particles have less inertia and therefore their trajectory is more easily deflected by the airflow. They therefore require a smaller radius to cause them to strike the wall and be slowed down.
I think you are thinking that the cause of particles separating from the air flow is the air speed dropping as it flows through the radius. This is not the case. There is no difference in air speed between the inlet and outlet. For that to happen, the outlet area would have to be greater than the inlet area. In fact in Shane's setup, you can see the outlet of the S-bend arrangement is smaller than the input - hence the angled cut - and therefore the air actually speeds up through the bends. Regardless, change in flow speed is not the primary method of particle separation in a cyclonic separator or in Shane's S-bends.
@B real Cool idea but 2 things to consider:
1. Not all metal is magnetic. However, in the case of steel, even if the sheet metal isn't magnetic the plasma cutter may magnetise the molten metal particles?? So maybe.
2. You don't want the particles accumulating on the magnets so you'd want the magnets to be on the outside of the pipe. Aim would be for the magnetic field to be sufficient to increase deflection towards the wall, but weak enough to allow the particles to drop down once they impact.
Depending on the type of metal Shane is cutting most, it could be worth a try. On balance I suspect the time would be best spent making a more efficient cyclonic separator which would work equally well on aluminium and non-magnetic steel.
I love “Fortunately we live in the 21st century, and they invented alchemy”
Oh, lol, I thought he said alkathene.
That caught me of guard
AND IT COMES ON A ROLL
Humankind cannot gain anything without first giving something in return. To obtain, something of equal value must be lost. That is alchemy's first law of Equivalent Exchange. In those days, we really believed that to be the world's one, and only, truth.
@@thisismyelement quite literally the conservation of mass/energy
They weren’t wrong
We had a moisture separator in our shop that worked on the same principle as your filter. It worked a lot better when it was rotated 90 degrees so that the particles had to go from down to up instead of side to side.
Wouldn't that clog the filter more quickly because there's nowhere for the particles to "drain" to?
Speaking hands like a This Old Tony
hes inspired a great handful of people
Not to mention the intro joke
Joe like chris fix
like a TOT?
I'm blushing for him. More recent vids are great though 🧡
If you ever do need to count the particles (because data
I like the apparent nod to This Old Tony with the first bit of this video
Greetings, I know I am a little late to the video, but I am a filter engineer. I have two recommendations.
1) Vane anemometers are notoriously inaccurate, especially a pocket one like that, using a hot wire anemometer would work much better.
2) I would recommend an expanded aluminum, you can find these are ready replacements for a range hood filter, they come in a variety of sizes so you should be able to find one that meets your arrestance & pressure resistance needs. They are normally cleanable, but I am not sure in this case. (Bonus points if you use a pleated design rather than flat sheet form factor).
As an engineer with a LOT of experience & having heard an enormous number of stupid engineer comments.... I would have told your imaginary engineer (you're cutting down the air flow) to pound sand.
BTW if you're aluminum tape stops working or you want to upgrade,
there is a stainless steel version of 'aluminum tape'. Another interesting project.
You could also reach out to precision tube laser and just get some 304 tube split in half.
Why not use chimney tube/pipe it's steel and meant for heat with one side already cut for you not that that makes it any easier to cut but you can roll the inside edge of the bottom in so that as particulates bounce against the wall they get trapped
@@seshmarls Yes, then you don't need to reinvent the wheel. Just set up a scribe block and a marker then run down both sides. To cut use the plasma cutter hand held on a timber straight edge of the correct height.
@@GabrielPohl you're you are is correct
You could also add some ionization to catch smaller particles.
Apply different voltages to the plates and see if that would help... Now I want to try it myself.
As an (aerospace) engineer my intuition tells me that your "obstruction" would not have a very significant effect on airflow, at least for your purposes. Obviously something like a 10% reduction isn't enough to explain an 80% reduction in particle ejection except maybe if the particles just aren't moving as fast so they have more time to cool -- making them harder to see. I say intuition though because saying for sure requires math or at the very least a simulation that does it for you.
However, it is important where you hold your flowmeter against the fan. Depending on the geometry of the blades (and this is still usually true), the velocity of the air from the fan will be faster towards the outside rather than the inside. Basically, the velocity diagram across the diameter is more like a V than a flat line. Again, not really that important for your purposes (you were holding it at roughly the same spot), just something to consider.
Cool project.
Your tape experiment addresses the cooling point I made. Also, you could try an electromagnet or something to get the rest. Once the particles get under curie temp, it could work. Obviously less simple than your S channel trap, though.
I would've liked to have seen him weigh the tape before and after to make a rock solid case.
@@Jakevewing The S-channels could be made out of magnetic steel and magnetized with a strong neodymium magnet at one end, which could be removed to let the dust fall of to be colected, due to the magnetic force making them kling to the S-chanels weakening.
Not to mention any terbulence in the air would change his readings even if he keeps his reading location consistent
Let the dude have his fun. Where's your channel?
Is it a tribute for This Old Tony ? I really appreciate that. True respect!
This is an older video and I'm glad he started talking to the camera, and adding "wife-mode" to pretty much everything. He is a fun, nerdy guy, and I'd rather see him do stuff than watch his hands. Definite contender for smartest guy on CZcams. Love to see something between him and StyroPyro. One man's engineering and anothers' chemistry background might be fun.
Thanks for putting StyroPyro on my radar. That's good stuff!
I'll try to return the favor my mentioning Tech Ingredients.
I definitely disagree, FWIW. Too much gratuitous selfie-stick talking-head on other channels. w2aew is an excellent example of the right balance, and meaningful exposition with his talking hands.
"I work with a lot of engineers. I know how to settle this score - data !" LOL
When you said we invented alchemy I was expecting some TOT style edit of you turning the PVC pipe into steel
he did turn the PVC pipes into aluminium.
You might look into installing them at an angle. You could maintain air flow rate while getting a boost to efficiency by using gravity to further accelerate the particles. You would see a slight uptick in build complexity but it could be interesting.
This is essentially the same way the PT6 (aircraft turboprop) filters it's intake air. In the intake there are these things called ice vanes, which is a colloquial term for inertial separators, like these. Course the ones on the PT6 typically move so the pilot can decide between higher flow and not inhaling a bunch of sand. So, very cool, glad it worked for ya!
Maybe add magnets to increase collection efficiency? Bonus points for the switchable kind like machinists use.
That's a good idea (assuming the particules are magnetic... presumably they are but I'm not sure)
They won't be if they're still really hot.
Magnet might be a better way to clean it out later than a vacuum.
Sparks are above the Curie Point so not particularly magnetic.
@@StuffMadeHere any kind of metal is slowed by magnetic fields when it drops doesn't matter if it's iron or steel
loved all the analysis at the end, especially the sticky tape for a real visual comparison. Data really is the way shut up doubters and keyboard experts.
I just found your videos and pretty much binge watched them all over two days. I'm an engineer who also likes to invent and make stuff. This video is the last one I viewed and based on what I saw in the others, I was mildly disappointed that you didn't write some code to measure the particle density for each of the tests to do more of a quantitative comparison. ;-)
Speaking of code, you frequently mention that it would be boring to spend any time explaining it and perhaps in in the minority but I'd actually enjoy that.
Oh, and keep including the failures that lead up to your success. That's the best part of you videos.
Lastly, I have to compliment your wife. Her power to put up with you is off the charts and I love the eye rolls that go along with that.
This is effectively a “chevron separator”. These are common on liquid vapor systems (like a cooling tower) where you want the vapor (air) to exit out the top of the unit without a significant degree of liquid (water) particles exiting along with. The liquid particles hit the walls to the separator, coalesce, and drip back down if designed property.
Or a grease baffle, as found in the fume extractions hoods in... Well nearly every single restaraunt, to keep the venting from getting clogged up with gallons of congealed grease -too- quickly. Maybe not the exact right term but that's what I've always heard them referred to as..
Same basic concept though.
Clever solution. Reminds me of a Tesla valve. It would be interesting to see if optimizing the shape and positioning of the blades could provide even better flow and filtering.
I feel like the scale is a bit off
Haha I was thinking he same thing!
@@probablynotabigtoe9407 of our s ,:8,,. ;
So anything with curves in a fluid stream reminds you of a Tesla valve? Really?
@@DiffEQ No. Just this, so far, with good reason. No need to be antagonistic.
Since you don't have a dust "collection" system, it's necessary that the dust which falls out of the air is ejected through the fans. You are removing a lot of energy from the dust and coalescing the smaller particles together when they drop down. It could be worth adding a trap at the bottom for the particles to fall out of, I think just the passive airflow will push the particles out the trap. You'll have to build the trap in a manner to prevent a venturi effect, but I think it could work.
That was one of my top risks when designing this but I did some testing before building anything and I was able to put a bunch of plasma dust right near the fans and almost none of it was sucked out by the fans. Presumably there just isn't enough flowrate to pick particles up and eject them so I cut out the trap.
@@StuffMadeHere Look up how a Torit system works. That's what you're really try to replicate. The air flow is good but you do need to collect the dust somewhere. I've spec'd Torit systems for our three plasma tables. They work like your sawdust collection example. Dust collection is going to be your next hurdle. Good luck. I enjoy the channel.
I'm getting big This Old Tony/Marco Reps vibes from your sense of humour: 10/10
I love your content . You have some good mildly dry humor and a good way of explaining what's going on . Not even halfway through the video I subscribed. Great job man 👍
That's exactly the kind of content I've been waiting for. Quantifiable experimentation. Thank you for taking the time to demonstrate how you arrive to unassailable conclusions. Ciao, Marco.
This is like TOT, Bad Obsession Motorsports, and Rainfall Projects all in one. :D
Had the same feeling :D
I agree .... well stated. 👍👍
oh yeah!
Plus Applied Science
EFormance Engineering nailed it
I love This Old Tony. Nice homage!
It’s really cool to see how much progress you’ve made in video production over the past half a year. Still making cool stuff, just now with better video presentation
You're like this old tony's slightly nerdy brother. Love it!
That is one of the best compliments ever!
You must be a German, given your username.
@@WillemAartVanDorpen my keyboard looks like that and is german. so i would say you are right
"If all else fails - I have a fire extinguisher"
First principals of the engineering and design process right there - fail forward!
I love the “This Old Tony” vibe!😂
“If all else fails, I have a fire extinguisher” are the words of a true madman
Your resident madman needs to step up his game.
Sounds like the perfect application for an axial flow cyclone. Basically a tube with a twisted vane in the tube, also called a “swirl tube cyclonic separator”. The air is made to rotate as it goes through the tube and the heavy particle fly to the outside, clean air stays in the centre. At the end of the tube you accept only fluid from the centre region, the outer region is blocked by a plate, the heavy stuff falls down out the bottom. They have very low differential pressure but you need many of these short tubes stacked on each other like a honeycomb pressed up close (but not touching or they won’t trap the particles) to a holey plate. The holes in the plate are smaller than the tubes because they only allow the air in the centre to escape.
I’ve seen these on heavy ore moving trucks, about 1m^2, 2 or 3 stacked next to each other as the air intake filter to the diesel electric power plant. They were only about 10cm thick. They filter the dust from the mining operation from going into the power plant. Also used in coal mining equipment to filter coal dust.
Although you do see the swirl idea used in reverse flow cyclone separators, the reverse isn’t necessary. The air isn’t redirected which is why the pressure drop is so small, it goes straight through albeit having been spun around on the way. Not uncommon In water filtration.
Wow. Had no idea!
Cool stuff! I considered doing a downdraft and did some experimenting with a makeshift downdraft with a ~30" fan as well as a water table on a rolling cart. I ended up doing a water table with a 55-gal drum that I pressurized with shop air to raise and lower the water. It captures just about everything. A little smoke rolls out the edges of the workpiece. A cross draft in the shop takes care of that, but my next step is to take an industrial curtain (with a tinted translucent center panel horizontally) and enclose it with an exhaust fan to create a negative pressure. Then I run the laptop from outside of that area. I would like to do a downdraft for welding though.
I just want to say that your videos inspire me to be a better 'maker'. Thanks for sharing your experience. Super interesting and makes me want my own lab.
I am officially addicted to your video man, the way you explain things os satisfying
"Cheap and immediate" :) Just in time production - love it :)
One aspect of the sawdust filter you appeared to skip over was the velocity change induced by the intake entering the cone. Could your curved sections be so arranged that the air velocity increased and decreased as it passes through each one, this should cause more particles to fall out of the air stream. Like sand bars forming in a meandering river.
Men, kids growth so fast! One day This Old Tony shows his kid in a video and the next he has his own channel. Crazy.
I just found your channel the other day - absolutely loving all of your content. Settling the score with engineers via data is way too accurate (speaking as an engineer who's dating a data scientist...)
This guy is fast becoming my favorite creator on CZcams
We have alchemy, it comes on a roll.
my new favourite quote
It completely makes sense to me that this would work. When I was in the Navy the way we stopped any water particles that had become entrained in our steam system from hitting the turbines and damaging them was by having a "treacherous path" i.e. doing exactly what you are doing here. I don't remember the name of the filter or a lot of other principles for why the engines work exactly but that phrasing "treacherous path" has stuck in my head for years
love the homage to this old tony
His hands do sign language so well, it was like I could hear the words in my own head.
Good idea, I would suggest to incline your filter array like a cone / \ so that gravity will pull particles down.
“Hopefully this was interesting. As always if it wasn’t, I’m not sure why you’re watching it” legend
You lost a little bit of energy conversion efficiency by having to run the fans on high, but the actual functionality was not lost which is far more important. You expend a bit more energy to achieve the same functionality while also reducing total expelled waste. That's a win. Awesome video.
Getting a kick out of the "This Old Tony" style intro.
Another very convenient way to collect particles is with: A barrel/container with 2 holes in the top, inlet and exhaust. Fill the container with water 1/3 the total collection area. As the fans pull the air in, the inlet tube can be extended inside the container with the mouth placed just below the surface of the water and when the fans turn on, all particles will have to be sucked through the water first. The exhaust tube will pull air regardless and almost everything should be "trapped" in the water.
Put a water tap in the base of the container, and make the lid detach from the container so you can discard the chips.
The smell it'd make when running 🤣
its fucking amazing how much the quality of your videos has improved since this, amazing job
I've seen that particular separator configuration used in steam boilers to separate droplets from the gaseous steam. I think it's called a scrubber. More stages makes it more effecting especially if spanwise edge traps catch the particle scooting along the concave surfaces. Cyclone separat oi r have the advantage of handling chunks in the dust stream. Scrubbers are restricted to smaller sized.
Lots of engineering info available for scrubbers.
When you want to quantify the exhausted particles make a picture of the sticky area, convert it to a threshold image, that marks the particles in black and the rest in white and count the black pixles. That would give your "probably about 5 % of the particles" estimation more credibility. :)
shane: it doesn't wear out!
entropy: oh wow cool
I could not find where the comments go. Until now. Thank you for sharing this video!
It’s like watching this old tony channel the wonder years . Cool videos
If you reduced it to 5% I am curious if that will stack linearly with 2 of your filters in series. 5% of 5% would be a damn good filter.(99.75% reduction?)
probably wont be 5% of 5%, the particles that made it through likely made it because they are lighter and have less momentum, thus can go through the filter... Although I bet he would still see maybe a 20% of 5% so 99% reduction
This would probably reduce the airspeed too much making the system less efficient which he was trying to avoid
@@jurresino I was curious about how far it can be taken, not if it would work for his setup. You know, for science.
Something tells me that if you do the math, you'll find that it's impossible for those to be 6000CFM fans. I think your measurements are more accurate than the marketing literature for "STRONG BOY 6ooo cFM POWER FAN!"
Yeah I've been thinking about that - they are northern tool rated for 2900 CFM each. That's only carries slightly more weight than harbor freight rating them :) Thankfully on a whim I put two fans in since I figured there was no way I would do it later even if it only half worked
@@StuffMadeHere I love that they use the "well, if everyone shuts off their a/c units and the grid surges to 125v 65Hz, and you have a slight tailwind facing downhill and a frog farts into it" number as the advertised flow rate
@@seldoon_nemar It's Ok he should be able to use his 16hp shopvac to clean it up
@@peterbonham5540 That reply is the least coherent reply imaginable.
@@shawnpitman876 ae
I really like the idea and execution.
I know this was just a prototype and I don't know if you have made any other video on this but what I would personally do is use metal tubes and make them magnetic.
I guess this would slow down the particles even more.
In case the metal tubes can't stay magnetic for long enough there are thin and bendable magnetic sheets that can be applied to them.
Great content btw :)
That was incredibly cool to watch and I found it very I retesting. Thank you for making the video and sharing it so I could watch it!
Why not a water table? Thoughts?
he wanted a solution that was fast, easy and cheap.
@Ocean House That's how a water jet system works but it recycles the water. It would work in this situation but it would be a real pain in the ass to keep clean and would probably smell like shit.
I wondered the same thing. Had a 13 foot plasma table with water table that worked great and was very durable after we coated the interior.
Exactly, a water table is pretty much standard for this application - it also has the convenient side effect to cool down the part and reduce warping, also it does not use two huge noisy fans that would personally drive me crazy
Great build! I'm curious, why you decided on this approach vs a water table? I need to do something for mine pretty soon.
I didn't want to deal with the hassle of maintaining a water table (mold, PH balance, etc), I didn't want to fish small parts out of water, I was afreaid of the machine rusting, and also the machine is in an unheated space so I was worried about freezing. The downdraft was not too bad to build and works great. I'm happy with it (especially now that the dust is fixed!)
@@StuffMadeHere Thanks, that's helpful!
This guy with patent worthy designs each video.
Love this filter, have an industrial one about 2 stories tall in my shop that saves me a TON of money :)
Ah yes finally
T H I S N E W T O N Y
Lol, I don’t even know what this man is making and I still watched the full video😂
For what. ? Wasting your time ey
6 is larger than 5.5. I was very worried that I wasn't one of the astute among us. Thank you for the reassurance.
6 > 5.5 - now this is the quality content I watch this channel for.
Tell me about it man, I'm cleaning out and selling off a machine shop that operated for 30+ years. literally everything you touch leaves you dirty with metal dust and cutting oil.
cfaber that doesn’t sound safe lmao
some people are just lazy honestly. i have worked for people who run shitty dirty shops and for people who run nice professional shops and it really shows in the workers attitudes, they are much happier to be there and more respectful to the business when they are in a properly maintained environment. this one shop i worked for didn't even have heating in half the shop. it got down to 5 degrees C in winter, operating machines and tools inside with a winter coat on lol. any business owners reading this, don't be ghetto. maintain your building and take time to clean every single day
Nice. Have you looked into "Spray booth Cardboard Filters"? They have the same principle, and you could make something similar from thin metal sheets.
Hello from Yorkton, Saskatchewan, Canada. Thanks for sharing your great video’s please keep them coming.
Definitely getting some this old tony vibes from this guy and I love it
I would try and collect all that metal dust, just think of all the thermite you can make with it!
And the FBI is now watching you
Pottery shops sell red iron oxide powder that is practically atomized, and it's far cheaper than you can get any other way (economies of scale and all) and it also makes better thermite than any other source of iron
@@KingHalbatorix FBI watching you even more
@@nowonmetube nah, thermite is for normies. nitrotetrazole-based superexplosives are where the fun really kicks in.
@@KingHalbatorix FBI has made a whole new division whose sole purpose is to monitor your every move
"If all else fails, I have a fire extinguisher" lol
I love how this guy thinks. He is very clever and creative, but also very practical.
I watched this video when it first came out and thought it was good I didn’t actually know it was you who made it because I found your channel again later !
This is basically how Chimneys don't let rain get to the fire.
Sometimes the simplest method is the most effective.
Now I’m curious how you cut the tubes in half
I feel your pain. I now use a water table. Now all the smoke is on top and I use a fan to draw it off. I just use some furnace pipe and send it outside. The splashing of the water from the air in the plasma helps to cool the steel as well. The water is hard to keep clean but I seen one guy use a pump and filter.
Good job. I just wanted to mention an alternative to the half pipes is corrugated metal sheet. One possible configuration is cutting many parallel flaps with not much pressure loss
Honestly, I think seeing your face makes videos better. A more personal touch to the projects
-- Just a thought
"if it wasn't - I'm not sure why you're watching it" - hah!
When I was in the industrial gas turbine engine industry, we used a couple of variants. Both were based on the same principle referred to as Particle Impact Separation. One device was for grading minute oil droplet sizes from various parts of an engine ... so small it looked like a fog. Another was an inlet air filter for a gas turbine APU intended for operation in a dusty, desert environment. It consisted of a maze of twists and turns of varying complexity. Micron-size particles entrained in the air fell out upon smacking into a wall at some of the turns then falling down into a collection chamber to be later purged. I recall the pressure drop to be surprisingly
low. That's how I remember it.
How do you not consider yourself an engineer? You're a master of engineering!
Note to self: I want a cyclonic dust collector that's clear so I can se the swirling dust tornado when vacuuming my shop.
clearvuecyclones they've been around a while, popular with wooddorkers.
I like the "no u" flex at the end.
Theoretical Uninterested Viewer: "Not interesting"
SMH: "Then why did you watch it to the end?"
It’s basically a simple mist eliminator, one stage pretty straightforward and common in the marine sector. Coollllll
I remember this being the first video I saw of yours lol. Love your channel!
Why just putting a water tank under the table wouldn't work?
OP answered this somewhere else, it reminded me of your question: "I didn't want to deal with the hassle of maintaining a water table (mold, PH balance, etc), I didn't want to fish small parts out of water, I was afreaid of the machine rusting, and also the machine is in an unheated space so I was worried about freezing. The downdraft was not too bad to build and works great. I'm happy with it (especially now that the dust is fixed!)"
If I were you, I would put 2 of those "filters"
I feel better about all the cuts in my hands after seeing yours! :)
Enjoying the "this old tony" feel of this video lol!
1:00 i've been watching your hands for a minute now and this is getting uncomfortable
Get them in shape or just stop showing them...
Ahh, just the normal, totally relatable, tutorial I needed! Thank you!
At my job we used a giant plasma cutter cutting out 2 5ft x 10ft pieces of metal, usually 24 gauge, but all the way down to 1/4inch plate. It made so much dust and metal partial it’s crazy, the plasma cutter ran on about 300 speed the whole day. So 8 hours everyday for 6 days, I cleaned out about 2 five gallon buckets of scrap powder Steele. Thoes plasma tables are awesome.
I like how you data on the fan outlet instead of just showing the metal collected in the system.