Making a particle filter that doesn't wear out for my plasma cutter

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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

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7 мар 2020

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Комментарии : 1,5 тыс.

@ryanm.191 4 года назад

‘I know how to settle a score with engineers - data’ How dare you use our weapon against us

@potatosordfighter666 4 года назад

enginerds

@HelamanGile 4 года назад

Lol true

@underourrock 3 года назад

I wish more people with something to prove would come to the discussion with data.

@tntcake6327 3 года назад

"You dare use my own spells against me pottah" - snape

@philipcooksey3422 3 года назад

My job title is data engineer. I find this offensive

@JlerchTampa 4 года назад

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! :-)

@StuffMadeHere 4 года назад

Indeed! It's still in the cutter and going strong....

@spacev50761 4 года назад

@@StuffMadeHere would placing another one of those filters behind this one maybe remove the leftover particles?

@Apophis40K 4 года назад

We have a saying that translates to "Temporary last the longest". And it still has to be proofen wrong

@Forgotten_Foods 4 года назад

@@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.

@cwmd7651 4 года назад

My robotics team and our robot is the perfect example of this lol

@cameronrohr2311 3 года назад

"There's nothing more permanent than a temporary solution" -AVE

@Hephera 3 года назад

That's a Milton Friedman quote. it's been around a lot longer than youtube

@DangerDIY 3 года назад

True that!

@ryandunn2930 3 года назад

@@Hephera I'll bet that quote has been around since before Milton

@Jivvi 2 года назад

@@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."

@nikkiofthevalley 2 года назад

@@Jivvi Is that as far back as it goes, or does it go farther?

@jacklav1 6 месяцев назад

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 RU-vid and your video is from 3 years ago so you have probably moved on.

@altersami9660 6 месяцев назад

What is "cut diameter"?

@ionkill43 6 месяцев назад

@@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

@multiarray2320 5 месяцев назад

crazy how many people are still commenting on this video :)

@brick_m 4 месяца назад

@@multiarray2320 yes! always knowledge to be shared!

@Sadiefaithlove 4 месяца назад

I’m working on designing easy to build long lasting cyclone for concrete dust. Would you be willing to help me?

@AnonymousGamer-rr4xm 4 года назад

He sounds like William Osman but makes stuff as well as Adam Savage, it's the best of both worlds.

@operator8014 4 года назад

"as well as" !?!?

@AnonymousGamer-rr4xm 4 года назад

@@operator8014 as good as, as well as, same thing.

@daeyvidd 4 года назад

He's indefinitely better than the pair of them

@MeMelon4u 4 года назад

Ur totally correct,I agree

@MeMelon4u 4 года назад

@@daeyvidd nah ur wrong

@yngndrw. 4 года назад

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.

@JesseRyan 4 года назад

my thoughts exactly~

@J23Ochs 4 года назад

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.

@klausbrinck2137 3 года назад

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...

@ominouspenguin 3 года назад

@@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.

@ominouspenguin 3 года назад

@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.

@ouWookie 4 года назад

I love “Fortunately we live in the 21st century, and they invented alchemy”

@LunchThyme 3 года назад

Oh, lol, I thought he said alkathene.

@pandoratheclay 3 года назад

That caught me of guard

@Kybx 3 года назад

AND IT COMES ON A ROLL

@thisismyelement 2 года назад

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.

@PJOZeus 2 года назад

@@thisismyelement quite literally the conservation of mass/energy They weren’t wrong

@nonsquid 3 года назад

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.

@zachrichard7039 6 месяцев назад

Wouldn't that clog the filter more quickly because there's nowhere for the particles to "drain" to?

@Blowjin 4 года назад

Speaking hands like a This Old Tony

@JoeBissell 4 года назад

hes inspired a great handful of people

@HeliosFish 4 года назад

Not to mention the intro joke

@Pythonian7 4 года назад

Joe like chris fix

@TerkanTyr 4 года назад

like a TOT?

@-Deena. 3 года назад

I'm blushing for him. More recent vids are great though 🧡

@OnreinKalfje 4 года назад

If you ever do need to count the particles (because data

@chaosburger307 3 года назад

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).

@elliotmcbee2668 3 года назад

I like the apparent nod to This Old Tony with the first bit of this video

@Jakevewing 4 года назад

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.

@Jakevewing 4 года назад

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.

@knight2255 3 года назад

I would've liked to have seen him weigh the tape before and after to make a rock solid case.

@jannikheidemann3805 3 года назад

@@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.

@andrewc4781 3 года назад

Not to mention any terbulence in the air would change his readings even if he keeps his reading location consistent

@TimMillernapavalleyfilmworks 3 года назад

Let the dude have his fun. Where's your channel?

@robertkazanjy7375 4 года назад

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.

@seldoon_nemar 4 года назад

You could also reach out to precision tube laser and just get some 304 tube split in half.

@seshmarls 4 года назад

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

@markfryer9880 4 года назад

@@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.

@seshmarls 4 года назад

@@GabrielPohl you're you are is correct

@ElionoNailo 4 года назад

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.

@poodledad806 3 года назад

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 RU-vid. Love to see something between him and StyroPyro. One man's engineering and anothers' chemistry background might be fun.

@marklefevre3476 2 года назад

Thanks for putting StyroPyro on my radar. That's good stuff! I'll try to return the favor my mentioning Tech Ingredients.

@mike1why 7 месяцев назад

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.

@gulyasgyorgy Год назад

Is it a tribute for This Old Tony ? I really appreciate that. True respect!

@SomeTechGuy666 4 года назад

"I work with a lot of engineers. I know how to settle this score - data !" LOL

@nathangek 4 года назад

When you said we invented alchemy I was expecting some TOT style edit of you turning the PVC pipe into steel

@kaikart123 4 года назад

he did turn the PVC pipes into aluminium.

@mitchellthurman 3 года назад

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.

@coltone.5826 2 года назад

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.

@williamking9707 Год назад

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.

@Lossanaght 4 года назад

Maybe add magnets to increase collection efficiency? Bonus points for the switchable kind like machinists use.

@StuffMadeHere 4 года назад

That's a good idea (assuming the particules are magnetic... presumably they are but I'm not sure)

@chainmaillekid 4 года назад

They won't be if they're still really hot.

@MarkProffitt 4 года назад

Magnet might be a better way to clean it out later than a vacuum.

@per.kallberg 4 года назад

Sparks are above the Curie Point so not particularly magnetic.

@TechTroppy 4 года назад

@@StuffMadeHere any kind of metal is slowed by magnetic fields when it drops doesn't matter if it's iron or steel

@erajoj 4 года назад

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.

@probablynotabigtoe9407 4 года назад

I feel like the scale is a bit off

@staticinteger 4 года назад

Haha I was thinking he same thing!

@Crisprian 2 года назад

@@probablynotabigtoe9407 of our s ,:8,,. ;

@DiffEQ Год назад

So anything with curves in a fluid stream reminds you of a Tesla valve? Really?

@erajoj Год назад

@@DiffEQ No. Just this, so far, with good reason. No need to be antagonistic.

@sofielee4122 3 года назад

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!

@PAChadClancy 3 года назад

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.

@eformance 4 года назад

This is like TOT, Bad Obsession Motorsports, and Rainfall Projects all in one. :D

@i_might_be_lying 4 года назад

Had the same feeling :D

@joell439 4 года назад

I agree .... well stated. 👍👍

@klab3929 4 года назад

oh yeah!

@camperlab6546 4 года назад

Plus Applied Science

@sethbracken 4 года назад

EFormance Engineering nailed it

@qwertzuiopqwertzuiop2107 4 года назад

You're like this old tony's slightly nerdy brother. Love it!

@DesertFernweh 3 года назад

That is one of the best compliments ever!

@WillemAartVanDorpen 3 года назад

You must be a German, given your username.

@shadowlord0162 3 года назад

@@WillemAartVanDorpen my keyboard looks like that and is german. so i would say you are right

@preydead9518 4 года назад

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 👍

@tankstavin 6 месяцев назад

I love This Old Tony. Nice homage!

@nickopedia5669 4 года назад

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.

@EZ_shop 4 года назад

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.

@scramblingblackberry 3 года назад

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

@isaach1447 6 месяцев назад

I love the “This Old Tony” vibe!😂

@eformance 4 года назад

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.

@StuffMadeHere 4 года назад

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.

@josephcitizen4195 4 года назад

@@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.

@klave8511 4 года назад

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.

@RICDirector Год назад

Wow. Had no idea!

@TheSar 3 года назад

"If all else fails - I have a fire extinguisher" First principals of the engineering and design process right there - fail forward!

@alliefdxproductionservices5856 3 года назад

I'm getting big This Old Tony/Marco Reps vibes from your sense of humour: 10/10

@reganbond61 3 года назад

“If all else fails, I have a fire extinguisher” are the words of a true madman

@colmreynolds9869 2 года назад

Your resident madman needs to step up his game.

@bernieduplan7181 4 года назад

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.

@ponyisasquare 3 года назад

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.

@Hyce777 3 года назад

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...)

@headrobotics 4 года назад

"Cheap and immediate" :) Just in time production - love it :)

@horseshoe_nc 2 года назад

Getting a kick out of the "This Old Tony" style intro.

@viniciuscamilo7016 3 года назад

I am officially addicted to your video man, the way you explain things os satisfying

@kyle8971 4 года назад

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.

@CrankedGarage 3 года назад

This guy is fast becoming my favorite creator on RU-vid

@MatDockerty 4 года назад

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.

@The214thRabidFangirl 3 года назад

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

@SerpaJavier 3 года назад

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.

@willart1735 2 года назад

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.

@TDPEquinox 6 месяцев назад

The smell it'd make when running 🤣

@muayyadalsadi 4 года назад

Good idea, I would suggest to incline your filter array like a cone / \ so that gravity will pull particles down.

@magnustangen6269 3 года назад

its fucking amazing how much the quality of your videos has improved since this, amazing job

@BowieSpoon 2 года назад

“Hopefully this was interesting. As always if it wasn’t, I’m not sure why you’re watching it” legend

@iansandoval818 3 года назад

His hands do sign language so well, it was like I could hear the words in my own head.

@garthvater 4 года назад

We have alchemy, it comes on a roll. my new favourite quote

@togusa6693 3 года назад

love the homage to this old tony

@steinthor 3 года назад

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.

@dom4nsane 3 года назад

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. :)

@djfaber 4 года назад

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.

@serbianspaceforce6873 4 года назад

cfaber that doesn’t sound safe lmao

@bmxscape 3 года назад

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

@forrestaddy9644 3 года назад

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.

@jonathanrice6338 4 года назад

I could not find where the comments go. Until now. Thank you for sharing this video!

@eformance 4 года назад

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!"

@StuffMadeHere 4 года назад

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

@seldoon_nemar 4 года назад

@@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

@peterbonham5540 4 года назад

@@seldoon_nemar It's Ok he should be able to use his 16hp shopvac to clean it up

@shawnpitman876 3 года назад

@@peterbonham5540 That reply is the least coherent reply imaginable.

@shadowlord0162 3 года назад

@@shawnpitman876 ae

@oceanhouse8080 4 года назад

Why not a water table? Thoughts?

@aSinisterKiid 4 года назад

he wanted a solution that was fast, easy and cheap.

@josephcitizen4195 4 года назад

@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.

@MrMatthewsmith83 4 года назад

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.

@AlessioSangalli 3 года назад

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

@g1ld 3 года назад

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

@gmeast 4 года назад

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.

@ryanspercussion 3 года назад

shane: it doesn't wear out! entropy: oh wow cool

@AdrianStaicu82 Год назад

Nice. Have you looked into "Spray booth Cardboard Filters"? They have the same principle, and you could make something similar from thin metal sheets.

@DangerDIY 3 года назад

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!

@luke7503 3 года назад

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 !

@rich1051414 4 года назад

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?)

@celivalg 4 года назад

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

@jurresino 4 года назад

This would probably reduce the airspeed too much making the system less efficient which he was trying to avoid

@rich1051414 4 года назад

@@jurresino I was curious about how far it can be taken, not if it would work for his setup. You know, for science.

@totalolage 4 года назад

Ah yes finally T H I S N E W T O N Y

@HellenUP 3 года назад

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 :)

@123eroberts 4 года назад

Love this filter, have an industrial one about 2 stories tall in my shop that saves me a TON of money :)

@johnnyb8629 4 года назад

I would try and collect all that metal dust, just think of all the thermite you can make with it!

@prestonmiles8721 4 года назад

And the FBI is now watching you

@KingHalbatorix 4 года назад

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

@nowonmetube 4 года назад

@@KingHalbatorix FBI watching you even more

@KingHalbatorix 4 года назад

@@nowonmetube nah, thermite is for normies. nitrotetrazole-based superexplosives are where the fun really kicks in.

@albingrahn5576 3 года назад

@@KingHalbatorix FBI has made a whole new division whose sole purpose is to monitor your every move

@Cilvaa 4 года назад

"If all else fails, I have a fire extinguisher" lol

@spideybrent 2 года назад

Hello from Yorkton, Saskatchewan, Canada. Thanks for sharing your great video’s please keep them coming.

@Jsmith1611 3 года назад

This guy with patent worthy designs each video.

@cherneazy 3 года назад

Honestly, I think seeing your face makes videos better. A more personal touch to the projects -- Just a thought

@simonwex 4 года назад

Great build! I'm curious, why you decided on this approach vs a water table? I need to do something for mine pretty soon.

@StuffMadeHere 4 года назад

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!)

@simonwex 4 года назад

@@StuffMadeHere Thanks, that's helpful!

@Fresh00740 2 года назад

How do you not consider yourself an engineer? You're a master of engineering!

@nobilismaximus 3 года назад

It’s like watching this old tony channel the wonder years . Cool videos

@TnT_F0X 3 года назад

This is basically how Chimneys don't let rain get to the fire. Sometimes the simplest method is the most effective.

@neef 3 года назад

Lol, I don’t even know what this man is making and I still watched the full video😂

@ggarcia3237 3 года назад

For what. ? Wasting your time ey

@ahobimo732 3 года назад

I love how this guy thinks. He is very clever and creative, but also very practical.

@alanm3438 3 года назад

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.

@mixup2216 4 года назад

Now I’m curious how you cut the tubes in half

@ColburnFreml 3 года назад

Note to self: I want a cyclonic dust collector that's clear so I can se the swirling dust tornado when vacuuming my shop.

@commentsboardreferee7434 3 года назад

clearvuecyclones they've been around a while, popular with wooddorkers.

@sabburahsuhail 3 года назад

Only.one year ago you would only record your hands....wow. my son loves your channel. I love it too even at this stage. 🙏

@sabburahsuhail 3 года назад

Omg....LOLLLLL " hope this was interesting. And if it wasnt, not sure why your watching it."

@zdenko3228 7 месяцев назад

Nice demonstration! :) As a sidenote, what you quantified was the macroscopic dust. Inertial filters and coarse filters only deal with this sort of dust and it is also the least dangerous particle size for your health. It would be an interesting sidenote if you had a device to quantify fine dust concentration.

@woogaloo 4 года назад

"if it wasn't - I'm not sure why you're watching it" - hah!

@shufukillah6772 4 года назад

I like the "no u" flex at the end. Theoretical Uninterested Viewer: "Not interesting" SMH: "Then why did you watch it to the end?"

@Lunch_box 3 года назад

Definitely getting some this old tony vibes from this guy and I love it

@lukanoo2 3 года назад

So, I couldn't resist and did a quick image analysis on your particles image at 8:35. The right side has 11.9% the number of particles on the left side. XD. Very cool videos. I've enjoyed watching all of them so far. Thanks for sharing!

@fartyperson 4 года назад

If I were you, I would put 2 of those "filters"

@henrymach 4 года назад

Why just putting a water tank under the table wouldn't work?

@SireSquish 4 года назад

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!)"

@LHS_Shadow Год назад

I remember this being the first video I saw of yours lol. Love your channel!

@sickerpuppies 3 года назад

6 > 5.5 - now this is the quality content I watch this channel for.

@diceblue6817 3 года назад

1:00 i've been watching your hands for a minute now and this is getting uncomfortable

@daanschurink4789 3 года назад

Get them in shape or just stop showing them...

@wishesyousweetdreams Год назад

Dear Mr Here, Filtering the visible particles are a good way of making a setup that needs to be cleaned less often. The health hazard comes from particulate matter. This is particles of sizes 10 micrometers in diameter and smaller. The smaller they are the deeper in to the airways these particles go and from 1 micrometer down these particles can get into the bloodstream through the lungs. The fun part is that these particulates don't need to be toxic to slowly kill you. If you want a system that filters this stuff out of the air I suggest making a bit of an electrostatic Corona discharge system in tandem.

@MrWiggenhammer 3 года назад

I like how you data on the fan outlet instead of just showing the metal collected in the system.

@travismiller5548 3 года назад

Ah, the old, "wait... How do you slice a tube the long way problem." I've been there. Weirdly, I've also been in that foil tape over PVC situation. Built a lamp with some stained glass and LEDs, used PVC+foil cap and pipe flange base. Thanks for sharing in this video, let me trade you a completely unrelated, weird combo of materials I found works surprisingly well together: eucaboard stuck with super77 over XPS/rigid foam. Turns hot wire cut foam shapes into a much more solid and resilient thing.