Why Your Dust Extraction Might Explode

[@stephen3073]

I've been building guitars for a quarter century, and I'm getting schooled by a brilliant young woman who is a third of my age. I love it! You are a natural teacher, Daisy, and your videos are beautifully produced. I love the way you seamlessly include your animations and illustrations into the mix. Raucous applause all around!

[@rocknroller912]

Think this reply from Daisy might be a scam it looks fake

[@Eeklex]

Yes, I got one under my comment as well.

[@rocknroller912]

@@Eeklex it’s linked to a new utube channel and the telegram account doesn’t exist

[@philvale5724]

Hi 👋, I have had messages to contact them, as well, is it scam ?

[@rocknroller912]

@@philvale5724 yes I think so. Scammers are all over the web at the moment. Genuine utube people and media stars don’t ask people to do private messaging

[@asheddie]

Hi Daisy, great video. We have a maker centre in our local town. We installed a huge dust extraction system big enough for the whole workshop. I was recently using the thicknesser when an elderly gentleman came over to assist. He's bald, which is important for this story! He was on the other side of the thicknesser retrieving the timber after each pass. All of a sudden I saw a spark get him from the extraction pipe. Without exaggeration it must have been around two inches long. It made an impressive "crack" as it discharged into his head! He was convinced I'd hit him!!! Moral of the story, good job earthing your system. We need to do the same. *Side not, upon researching I found it wise to be cautious with a dust extraction unit inside your workshop. The dust that escapes your filter is generally sub 5 micron. It atomises into the air. This is the nasty size for human lungs. I like to think of dust extraction as a cleaning aid, but still wear a respirator for self protection.

[@briansweeney2007]

Daisy. You nailed the static problem. Remember if you were to hit a nail while running vacuum ,the hot metal could end up in your dust bag and smolder for a long time before catching fire After you've left your shop. You usually know when you've hit a nail(or other metal) just open your dust bag and spread out the dust etc to prevent smoldering. This tip could save you a major fire. Stay well. You are the best

[@timbeaton5045]

Impressed at the way you fearlessly handled those venomous snakes... Oh, wait...😁

[@DaisyTempest]

🐍 🐍 🐍

[@aapoapina7390]

It requires quite spesific volume of dust and airflow in plastic pipe to make a combustion as I recall from some study random years ago. In scientific laboratory they had trouble making dust combust. It needed quite amount of dust which isnt normal in our small shops and machines.

[@ReVerthex]

You should turn the Y connector from the thicknesser around, it will be far more efficient. Think of the piping in terms of flowing water, if the extractor is at the bottom of the hill and you want the water to flow to it effortlessly, then that backwards Y bend is a trap.

[@aether_antares7761]

all those flex hoses arnt to efficient either...

[@vilim5141]

This poster is right...This setup might block the planer completely if the the other hose is open... nothing catastrofic will happen but the planer might get glogged.. just 180 the y-piece and yer golden :)

[@davidpeters8813]

Good work on the install of the dust extraction. Just FYI - the "grounding" is really unnecessary since pvc is an insulator, so you are only removing static from the area the wire immediately touches, it's still present on/in the rest of the pipe. Additionally, a wire on the outside only removes static from the outside of the pipe, not the inside and vice - versa. Furthermore, a dust explosion requires very specific circumstances, including a particular particle size and volume, and a small shop cannot reproduce those conditions. And a spark from static discharge is not energetic enough to ignite the dust even if you did somehow manage to generate the large volume required. It is a persistent myth that won't die because of social media; in fact, there has never been a documented case of a dust explosion in a small shop due to static. Regardless, it's great that you have a proper dust extraction setop because that is not good for your lungs. Enjoying your videos, keep up the good work.

[@kmbbmj5857]

Unfortunately, this video is perpetuating that myth.

[@scottmasson3336]

I received a massive static shock from a machine that had been connected to ancient extractor using dryer hose! It fried nerves in my hand in their own fat according to the specialist. The charge went up my right arm to my neck and down the side of my body. After about 8 years of coping by being given stronger and stronger painkillers until I could be given no more I had to retire from Technical teaching...so yes this happened in a school workshop. Ultimately I got, eventually, a medical retirement but life has gone downhill since as a direct result of my accident. The medical profession had great difficulty working out what to do. Don't cut corners.

[@davidpeters8813]

@@scottmasson3336 that sounds more like electrical bleed was also involved. If the hose was metallic, then it could be grounded, but you can't do that with PVC.

[@dinoantics6060]

Daisy Tempest, best science teacher 🏆

[@anthonyharper5954]

I would recommend wearing a respirator as you’re in an enclosed area with no air movement … also maybe an air quality system might be a good investment. Hardwood dust has many health implications and shouldn’t be overlooked! Happy building

[@DigiLab360]

Watched 10’s of videos on dust extraction. First time I’ve seen anyone reference grounding. Makes so much sense! 🤓👍

[@Pablo668]

Yeah, some atoms have an extra electron called a valence electron. It's this electron that can get moved about from one atom top another and build up a charge. Generally nature doesn't like things unbalanced, so those electrons will travel to anywhere there aren't electrons. What you are doing with your set up is a wise move. Static electricity does build up anywhere there is friction. People who put computers together usually wear a grounding cable. When it comes to safety, and I've worked a few high risk environments (just workshops, industrial sites) I was told to think of consequences rather than likelyhoods. Dust explosions can get really gnarly. As always, enjoying the content.

[@thetomster7625]

little tip: don't use those screw-on clamps for the wire... with a vibration heavy environment those can easily get of that mashed wire... from another video I know you have a solder iron -> that would be preferable regarding the science: almost completely right, just a little addition that not only the electrons form up and build a negative area, also the protons that are now missing an electron are charged (positively), so both the PVC pipes as well as the saw dust (if very dry) will be electro statically charged. but: 100% cool that you even think about that stuff... at lot of work shops I know in my area do either not really have dust collection or if so, no proper grounding^^

[@MichaelBuilds]

Never thought I would enjoy a dust collection video so much 😂. Do you have an Amazon link for that dust collection kit?

[@DaisyTempest]

Sadly not Amazon but Axminster my lovely. I don’t think they ship across the pond :( thanks ever for your enthusiasm xxx

[@MichaelBuilds]

@@DaisyTempest ☺️☺️☺️

[@markbernier8434]

Daisy, I think you are equating news stories about disastrous fires to the rate of incidence of dust fires and explosions. I think you will find a great many stories in the comments below. Your comment about the humidity being controlled etc. is true as far as it goes, it is the little bit of crud built up next to a fan impeller that friction heats up and then poof. I had a good teacher who did a demo on this. He had a gallon paint can and put a teaspoon of wood powder in it. For the demo he had a car spark plug in the side of the can. He hammered the lid shut tight. Tripped off the spark plug and the lid hit the ceiling leaving a dent and the can was bulged out at the sides. Quite impressive to say the least. So, can't be too careful.

[@MisterY1986]

Sweetest explaination of electric charging, I have ever seen.☺ Important question: DID YOU CHECK YOUR WIRING, by MESSURING the ground impedance? If not, you will not know for sure, if it works properly. It is correct, that the probability of a wood dust explosion in the tube is very low. Chances are much higher of getting shocked by a charged plastic tube, than to have a dust explosion. Plastics are highly chargable. However, things change completely, when the dust includes metal dust. This is where things can get very dangerous, because metal dust from crafting processes is mostly super hot and your dust extraction might go up in flames (not explode). That is why you should allways keep these kinds of workplaces and their exhausts seperated from each other.

[@LeoMakes]

Instruments, woodworking and electronics (well... anthropomorphized electrons). Three of my most favorite things ever! Looking forward to seeing what you build in your workshop!

[@roberthasplund]

Good job! You are likely correct about the probability being low but most people underestimate the consequenses of dust catching on fire. With the correct dust and air mixture you can cause a significant explosion. For those of you who haven’t seen one I suggest you search for dust explosion on youtube and your mind will be blown.

[@timdriman4253]

Hi Daisy: GFBSA... I live in South Africa, and have a Man Cave workshop, which I am in the throws of completely revamping... I found your UTube channel completely by chance, as I was surfing the woodworking-related channels. I am delighted that I did, and am now an avid subscriber, and follower...😁 Love your dry humour, but I am not easily fooled... Beneath that cherub-like exterior, lurks a master-crafts lady of epic proportion 🤣 Keep up the awesome videos, and am really looking forward to seeing what you will be producing in your equally epic wookshop.😁

[@jozsefizsak]

That was very educational. I had no idea that electricity was so closely related to snakes and this is good because I like snakes so turning the lights on will be even more of a pleasure going forward. You're clearly not just a luthier but also an electronicist. 😊

[@davidrodriguez4951]

… You have one of the best shows on the Internet I don’t know what it is may be because you’re explaining everything in simple terms that I can understand and throwing in a word or two that I’m not familiar with because it’s a British word… Keep up the great work and thanks for the entertainment along with the knowledge!

[@notsonominal]

While I have no interest instrument building I love your presenting, animations and general goofballeries. Thanks for sharing!

[@DaBinChe]

I would position the wires in the tubes at the top/12 o'clock position to reduce saw dust building up in the tube.

[@Nachtuil36]

Never before heard such a cute and hilarious explanation about static charges ! If only teachers in schools would explain in the same way, hahaha !!!

[@jkwhtsll]

You did a fantastic job of explaining atoms, protons, and electrons. (An 80 year old professor of chemistry, long retired).

[@danandratis]

You even make sawdust interesting, Thanks Daisy - Cheers from Canada

[@amateurmakingmistakes]

Two very good reasons to use dust extraction: a small risk of explosion and a very high risk to health! Good move! Besides, you don't want all that dust coating everything!

[@briansweeney2007]

Hi Daisy. I sent you a comment about this very thing many months ago when you first got your workspace going . Glad you're on it. Stay safe

[@MooCow2X2]

My only comment. Less flex hose is more. That stuff kills the performance of the dust collection. Not so bad for the big chips. But the super fine dust is hardest to catch and needs maximum airflow.

[@timmotz2827]

I’ve found that sawdust collects in the flex hose, but I probably don’t have the airflow that Daisy’s system has.

[@edappi8172]

Hello Daisy, Great vid as usual, two comments, the wire can just be on the outside of the dust lines, and to stop those really annoying jolts you get when using the shop vac to vacuum the floor, put a conductor from the dust drum to the floor, That was the singular best thing I ever did to keep the floor clean.

[@philvale5724]

Hi 👋, Very interesting, back when you were just a atom in the universe, that was before the big spark, I had some colleagues that had a very large workshop. Where are the dust extractor who is outside the building, luckily for them. As one day there was a fight inside the pipe electrons, atoms molecules all decided to accumulate. And they had a meeting outside BOOM 💥, blew the dust extractor apart, and caught on fire, get the Fire Brigade get the Fire Brigade, luckily they managed to put it out. Even dust floating around in your workshop could explode if you have a bad ignition on something it will ignite and blow your doors and walls out., Something that a lot of people don’t think about is their polishing products , are use rag to apply them or paper towel. This can I have a chemical reaction, spontaneous combust., so just don’t throw your rags onto the ground but into a waste sealed container,, , put them into a metal container or even put them into a water bucket, not in a plastic bag or a plastic dust bin, There was a guy over 🇺🇸 that conducted an experiment, over the course of 24 hours, and 48 hours, he got plastic bags and plastic dustbins and set them up in a controlled area, he had used, paper, towels, rags, et cetera, and soak them in different types of polishing compounds, screw them up and drop them in plastic bags and in the plastic dustbins in the way that you were the last thing at night or last thing or Friday night, he used a infrared device to read the temperatures of the plastic bags, plastic containers and rags that were literally just piled up on the floor, he took readings of them half an hour an hour and so on and so on and I think within less than three hours phone member, rightly one of the bags started to catch on fire and ended up or even the plastic containers dustbins caught on fire and he had to drag me outside with a fire extinguisher., he done this experiment because one of his friends lost his workshop in a matter of a few hours after leaving work on a Friday night, I have had my specialist joinery business, best part of 40 years, and I would say nine times out of 10 that I will sweep up the last thing at night before going home. I’ll make sure everything is neat and tidy for clean and healthy start to the next day., even going round to the point of switching things off, making sure everything was isolated, I have seen you in the past, do some amazing work , stay safe, I hope this can be a help to somebody. I am now retired, live in France , Phil from the moulin France,

[@andrewdoherty8847]

Flex has quite a bit more flow resistance than the solid pipe. Better practice is to use the solid for as much of the drops as practical. The U turn off the thicknesser is a no no. Perhaps you are using a new physics but in my school days, before steam traction, neutrons were just neutral, hence the logical name. But your general information is well presented. Rutherford would have been happy. The question for this video is: what was Paganini's favourite recreational instrument?

[@andrewpinson1268]

Only seen a few of your videos. You remind me of another woodworker - Tamar on 3X3 Custom and that is a complement. Explaining and teaching. Good job.

[@jamescopeland5358]

Get a ladder 6' is most useful. Looks like all your metallic items are grounded. Sander dust is the main thing in your shop and it needs a hot start like a match with plenty of o2. If you have rubber feed rolls you can ground the bearing housing. If you had a bucket elevator you would ground the drums with static brushes

[@bearthompson6506]

Very nicely done all 'round! Dust collection system, video, explanation, editing...Thanks!

[@VanDykeGray]

Great video, Daisy. It inspired me to properly configure my dust collection system (which has always been a mess). Thank you!

[@davedavem]

Excellent "science bit"! Well done for making dust extraction interesting! My vacuum has a tiny little chain that touches the floor. It's probably fine, though... Because my garage leaks really badly 😅

[@johnduffy6546]

LOVED THIS VIDEO! You are obviously a proton...Your positivity is highly contagious.... Please keep infecting the masses

[@markmanning2921]

Im pretty sure thats the actual official way of properly testing an extraction system! :)

[@richardknouse618]

In today's highly charged environment it is refreshing to see a young person taking a proactive, positive approach that also happens to be scientifically valid.

[@grekiely6245]

Fun learning. As dust is hazardous, an extraction system is essential. Nice to see the finished product.

[@tom314]

I won't deny your description of a neutron having both negative and positive charge made me cringe somewhat, but your right a dust explosion is a possibility although a very slight one in that situation. I started writing a very long explanation (I have a PhD in physics) but I'll truncate it to, if you ever suck up shavings and get fed up with them collecting on the wires remove them and just use a strip of aluminium tape over the outside to remove the charge, it'll work fine. You're not moving many electrons, your not trying to reduce the potential to 0 and the potential you'd need to generate a spark is high, if you were in a continuous very dusty atmosphere I'd suggest other solutions but for this it'll be fine. It's what I've done in my similar workshop :) On a related note, it's worth avoiding thinking of insulators and conductors when you're looking at high voltages, everything conducts, it's just how much... On the dust handling side, if you find you need more flow, try to minimise how much flexible pipe you use (the rough surface really kills air flow), try to increase the radius of your bends and if you can increase the size of your HEPA filter (and clean it occasionally). You can also heat those plastic pipes up and bend them a bit if you need to :)

[@rizzidepizzi]

Don't forget to ground your container. If something is to catch on fire, it'll be this, especially if it's steel. Grounding PVC on the ouside however, isn't going to work, there's a lot more surface area that doesn't get touched by the wire then is touched. The inside wire should be enough. In any case, this is way better for your lungs. Thx for the vid

[@DaisyTempest]

Yes! Forgot to mention this.

[@peterspencer6442]

There are anti-static sprays that can help spread the electrons around the outside of the tube, fabric softener works too and I've used it before as it helps remove static from our jumpers to make them feel smooth. These treatments do loose effectiveness over time and need reapplying but they do help nicely.

[@who-gives-a-toss_Bear]

I do enjoy your videos and that was a job done real good. Talking about safe working around the 9:00 mark, and there you are stool standing. Yes we all do it but should we, more to the point should we document that we do it in a work place.

[@tpottrell]

I picked up that Axminster ducting kit too, haven't bothered to ground anything but I will say the blast gates are constantly getting stuffed with debris which prevents them from fully closing. I have to keep using a small allen key to hook it all out every few weeks

[@LordMondegrene]

I install blast gates upside down so crud can't fall upwards into the gate slot. It's a bit less convenient to have the gate handle on the bottom. But it beats clawing wood dust out of those slots once a month.

[@techslfink9722]

Safety first, a wise decision! It is true that the chance of fire is second to none, but better safe than sorry. And decent dust extraction is absolutely key! It’s always a pleasure to see your videos- and always very educational too👍🙏

[@philipdavidson2721]

Have you ever used veneer softener on your sides before bending. I use it for tight bends and if used properly you can even make a bow tie out of thin wood.

[@DaisyTempest]

Sure have. My jig was the culprit sadly.

[@multifaceted29]

Your brand is so amazing! You’re a badass craftswoman/luthier, your creativity is really refreshing among my channel subscriptions, and I always look forward to your video style and sense of humor whenever you post new content here. Keep up the great work!! ❤

[@cjstanley8868]

Best explanation of static I've ever encountered!

[@stephenbrent]

Great video, loved the science bit. Always wondered what caused static.

[@johnwebb2562]

Hi Daisy noticed you didn't have any windows in your workshop. Perhaps you should consider finding one with windows natural light or better ventilation. It's not good to spend a long time in a negative-pressure environment you need some positive pressure as well as ventilation. As a joiner who worked in industrial workshops a lot of hardwood dust is carcinogenic. make sure your extraction filters are adequate. best regards. john.

[@jonp8212]

Yea not bad - copper wire doesn’t look bad at all. Your install looks great ! On industrial systems that tend to use galvanised spiral wound - electrical practice trusts the metal duct - but not the flex (even if it’s vac hose with wire) so common to see cross bonds over the flexes. I like the clear PVC for the same reasons as you - and it’s nice to see what’s going on. - good job!

[@donvankleek1196]

Daisy, I truly appreciate your videos. You are full of life and quite the artist. Keep up the amazing work.

[@ianbrown4242]

Look, I freaking love setting up dust collection ducting. There's no shame involved. Satisfaction +10

[@philxcskier]

I just got a used 1HP dust collector for my shop, online they say it’s underpowered to use with blast gates etc, but it’s at least step up from a shop vacuum lol. Hoping I can get a bit of a setup like yours with clear pipe and grounding wire!

[@chrisgreenwood4713]

Thanks you made my morning! Never stop learning!

[@AusWorkshop]

Thanks for this video. I was just wondering this today about my own dust extractor system. Oh and if I'm not mistaken I would identify that snake as a copperhead snake I think..... I saw one down the road from here just near Steve Earl's place.

[@Sevenator69]

The hair vacuum is the most important and scientifically viable test you can perform on a dust extraction system. 😆

[@chickenlickin3820]

lol

[@DTGuitarTech]

Nice. Looks great to me. Only thing that crossed my mind was, are some of the new extraction tubes obstructing the sprinkler system? Would the fire service be ok with that?

[@DaisyTempest]

An EXCELLENT point! Thank you!

[@DTGuitarTech]

@@DaisyTempest It’s not a criticism at all by the way. Hats off to anyone who tries to improve the safety of their work environment 👍

[@lilya7509]

Loved your explanation of grounding!

[@MarkSmith-ij3ey]

Another approach to keep the wire on the outside by installing wood screws through the plastic fittings and leaving the head proud with enough space to be able to wrap the wire around it and then on to the next screw head. This method allows for the directing of static charges to the outside of the tube and to be grounded without interfering with shavings and "cut-offs" that can get tangled up in the wire.

[@bobd5119]

I hope you're right! I did what you describe. I wrapped bare copper wire around my PVC, and attached it with sheet metal screws protruding into the pipes. I figured the pointy screws would drain enough charge. I hope the electrons understand what to do.

[@MarkSmith-ij3ey]

@@bobd5119 Saw this in the magazine Fine Woodworking many years ago. Interested in you results.

[@LB-W]

That was the best description ever. I loved it. You lady are rocking quirky. I wish you every success. X

[@LB-W]

@Te-legramme_DaisyTempest oh yes what would you like to discuss?

[@DavidLindes]

Physics #ScienceEducation from a cool Luthier that's also talking about dust extraction workshop upgrades... I'm so here for this, for all the reasons! :) 7:43 - I wish I was sufficiently qualified to know. I do have a sense that you might be making a loop, which I know is often desirable to avoid with grounds, but I'm not sure if it matters in this context. I can think of other things that _could_ be wrong, but I don't know! Hopefully if you get better information at some point, you can do a follow-up if it's major. :) 9:49 - haha, that's ok. They like it. ;) ;) ;)

[@vaalrus]

The first thing I did after setting up dust collection was to loop a drain wire down my pipes and ground it, if for the very least, it alleviated the extreme discomfort whenever I was vacuuming around the shop.

[@MachiningandMicrowaves]

My extraction system is mostly metal. I've made some really nice dust explosions in the past (on purpose, with flour and a candle in a large container), and had some amusing workshop fires while machining titanium, but getting the right mix for a viable dust explosion is hard. The amount of charge you could build even with very dry wood dust isn't going to make a fat, hot spark that lasts long enough to cause ignition in a fast-moving air stream unless you have a large piece of insulated metal to act like the collector on a van der Graaf generator. It will, however, be quite enough to give you a shock and wreck or degrade any electronic devices that are close enough to the discharge. Running a wire along the PVC won't remove the surface charges, but it will provide an equipotential surface that will help limit the build-up of energy from charge separation. You'll still be able to build up a fairly significant voltage though. My extraction system is pulling small amounts of isopropyl alcohol vapour so the risk of spark ignition is much higher than with dust, hence the use of metal. I have some of that flexihose with a steel wire spiral, and I ground that to the machine frame and the vacuum fan. My personal assessment is that my risk from inhaled dust is orders of magnitude greater than the fire risk and that's orders of magnitude greater than the explosion risk.

[@Maarc]

I nerver used pvc for dust collection. But I can advice you to replace 90° corner by 2 x 45° for better air flow and so performance

[@Elshadyrian]

Another enjoyable video. You have a knack of turning what could be mundane into entertainment. Your personality and looks also help in this regard (hope that doesn't offend). 😀

[@t.e.1189]

I love your videos. Very educational & enjoyable to watch as always.

[@mitjamitjaj.5945]

Yes, good job... and I love the way you explained the atom composition and static electricity with emojis :) :)

[@DaisyTempest]

gotta go back to basics!

[@kcar1365]

Looks great! What did you attach your ground wire to? The sprinkler pipe, a grounded power outlet, or?

[@sojolly]

Looks like as they said in big bang theory you 'grounded the crap out of this'. As an electrical engineer, you did what i would have done. Minus testing it with a grounding meter (but you probably don't have one of these). The weak link might be the connection to the ground lug. Check that periodically during your maintenance.

[@steveeason2207]

Great video, I honestly need to do my workshop! One thing, I occasionally sand metal with my belt or disc sander and cut metal bits with my bandsaw......am I wrong g to do this from a safety point of view with a dust extraction such as yours?

[@DaisyTempest]

Does anyone in the comments know the answer to this? I don’t think I do sadly!

[@KarlBunker]

I'm not an expert, but IMO if you're sanding or grinding steel, it can make sparks, so you want to do that way far away from _either_ sawdust _or_ the fast-moving air a dust extractor creates. Sanding nonferrous metals that can't make sparks isn't as bad, but it could still in theory create enough heat to start a fire/explosion.

[@steveeason2207]

@@KarlBunker I don't grind steel, only non ferrous metals, so non sparking.

[@malcolmgray1227]

Very well explained, made sense to me. On a side note. What do you think of the Titan Planer Thicknesser? I was thinking of getting one.

[@DaisyTempest]

It’s never given me a problem, pretty sturdy and reasonably priced for what it is! I use it only for fingerboards and neck blanks (sometimes when I’m doing a few)

[@malcolmgray1227]

@@DaisyTempest Thanks, you've made up mind. If its good enough for fingerboards and necks, that's good enough for me. I'll put it on my shopping list. Great channel also!

[@andrewfrost8866]

You are just so awesome!! Actually, you just reminded me that I need to sell my Hoover... really, it's just gathering dust...

[@AusWorkshop]

Haha, your joke sucks!

[@amateurmakingmistakes]

😆🤣

[@YegresAL]

Maybe I didn't understand well, but you should not connect grounding between vacuum system and any other device. In general, ground should be made "per device" - otherwise you could create mini-circle when current goes "to the wrong ground" (if you want to get more on this - look for triangle- and star- connections of the electrical network). This could lead to an issue when grounding wire starts to work as fuse and melt vent system (as current always goes to the direction of smallest resistance and copper provides such). Also, external ground wire on pipes should be isolated (several layers of transparent scotch sticking wire to pipe will be enough) - again to avoid any short circuit wire-Daisy-floor. PS. Igniting of the powder (saw dust, flour, sugar powder, etc) depends not only on humidity level, but also on very tricky ratio between electricity field intensity, particle size and distance between particles. Very briefly, ignition happens because lightning starts to jump from one particle to another, and there're thousands of such lightnings -> which increase air temperature -> which ignites everything in the air. PPS. Humidity helps with those "electrons running away" - they starts to run away from every surface thus there's no electrical field of necessary intensity to ignite reaction. Until there is field with necessary intensity to ignite reaction... PPPS. Yep, boring magister of theoretical physics there... I'll show myself the way out )

[@stevegarnett6455]

I'd go with the star connection method too - simply because if the first grounded point fails, then everything else connected to it after that isn't grounded any more. Serial grounding gives you no redundancy at all. With wood dust, ideally use metal, but electrically conducting plastic pipe (yes it exists) is probably as good.

[@bigmaca]

First. Also should the pvc joint above the planer not be facing the other way so the angle leads towards the extractor not away?

[@wayneroy6694]

Is the copper wire insulated? It looked like it was coated. You don't want coated wire for your ground if you're trying to capture static electricity in your extractor. For that, you'd want bare wire. If the coated wire is just on the outside to connect bare wires on the inside to each other, that's fine. If that's all I was seeing, then disregard my alarm.

[@planeflyer21]

Well, that was a pleasant companion with breakfast and a sunrise. Thank-you!

[@phillallen01]

Just stumbled onto you chanel and all i can say is wow you amazing artist just one thing tou you have still not earthed the dust extractor you still need to earth off the wire to an earthing point which in you case is the steel conduit you wiring is in other than that you could always connect it the the main earthing that goes onto your fusebox dont and you will gain more suction if each machine as a blast gate that has no gaps for air to escape this is the biggest cause of loss of suction

[@wouterengels7769]

So.. do you need a good copper, or a bad copper to round up those freeloading electrons? Or will any copper do? ;) nice video. Being a hand(powered) tool woodworker myself, all my dust/shavings are extracted by a hand wielding a brush and then deposited, into a big pile in a binbag. Probably not all that safe either, come to think of it.

[@dw4223]

I have started watching more maker videos with this kind of vibe and I love it! Your music choices are spot on, keep up the good work :D

[@Emily_M81]

I had Wayne's World flashbacks lol. "It's the suck cut. It sucks, as it cuts!" I thought the music montages were a nice touch

[@1992jamo]

Nice one. Did you do a continuity test on it? otherwise it might just charge up like a capacitor, and then arc to earth where one of the bad connections is (if there is one).

[@BobMuir100]

Yup looks/sounds all right to me. Did you look at other shops dust extraction installs before you went ahead? Bob England PS good piece, I enjoyed watching it.

[@TheGadgetdave]

I was expecting a simple dust extraction install video but what you gave us was shocking! 😂

[@AquaPeet]

**dzzzt**

[@ronj8000]

Hi Daisy...Im an engineer in real life but a professional hardwood furniture maker (I do sell my pieces) in my garage off time. I think your videos and skills are great! Plus youre adorable! Keep being awesome!

[@rectify2003]

Hey Daisy - Maybe consider Copper Tape, which you can cut to shapes also. ⚡️💥 Well Done tho

[@cyan1166]

I absolutely love the education given about electrons lol

[@KRWoodworks]

I've never found a story or evidence of a dust collector fire in small to medium shops. As Daisy said it's so rare as to be a nonissue. The zapping on the other hand.....

[@amateurmakingmistakes]

In the aviation industry, painting areas are often grounded to prevent dust being attracted to the painted surfaces. And ground wires should ALWAYS be attached to aircraft to prevent that zapping getting to your aircraft fuel tanks!

[@KRWoodworks]

@@amateurmakingmistakes completely off topic but ok then. Just like I ground my airplane every time I fuel up. There, my completely off topic reply.

[@testingperson8413]

Interesting that you should say that. There are two stories right here in the comments. Maybe they posted after you commented?

[@KRWoodworks]

@@testingperson8413 Telling stories in a forum isn't documented evidence. They is anecdotal at best. I've had DC in my shop for ~22 years but before I built the system I looked for solid evidence with references to substantiate the static claim. I found none. I heard all the stories and myths surrounding this so I wanted evidence. I found none. There are 100s if not 1000s of videos by woodworkers all over the world, again saying the same thing. The one story I did find was a woodworker grinding metal and using his DC. There was smoke coming from the system and it was caused by the sparks from grinding.

[@Zealdave2223]

Had a fire in a dust extractor and it made such a mess and not just in the pipe, It destroyed the extractor and the sander where we suspect the spark was generated.

[@julianalcock8658]

Great job. Dust explosions can be horrendous.

[@blodpudding]

High air flow, highly flammable particles whizzing around... not a good combination. Four Eyes Furnitures had a scare just last video they posted. Dust in general is so underestimated when it comes to danger, especially when working with exotic woods. Breathing that in will cut years off your life.

[@diegochavez3001]

I am finishing my first workshop so I searched out how to extract the dust... but now I am in love 😰

[@guyincognito1423]

Props on using venomous and not calling the pvc "poisonous".

[@mikeselectricstuff]

Doesn't need to be copper - any metal is more than conductive enough for these purposes

[@Orangie2008]

The best safety advice I would give from watching this video is to purchase a proper ladder. 😎😎

[@billysmether6237]

One of the Y branches looks like it is going in the wrong direction. Picture the dust as a car merging on to an expressway. It looks like you are using braided wire, does it have a coating over it? It needs to be bare the whole run. It is hard to tell from the video. Thanks!

[@MrMe6104]

Hi Daisy. So firstly you are not doing anything wrong per se in that it is not unsafe. But if you want this to deal with static build up it is unfortunately next to useless. PVC is a near-perfect insulator which is why it covers electrical cable. If it was even a tiny bit of a conductor then anyone touching a power cable would be electrocuted. If you run a copper cable along a PVC tube it will only therefore earth the exact point it touches the pipe. A static build up even a mm away from the wire will not earth it. For that reason a static build up at the exact point the wire touches the pipe will be grounded but nowhere else. But let’s do the maths to see if even one wire helps. For a 100mm pipe let’s say the internal circumference is 314mm. Assume a 2.5mm copper wire actually has a surface contact area of 2.5mm (it doesn’t - it’s less). That means that if you secured the whole wire to the inside of the pipe so it is in constant contact then only 0.8% of the pipe will have protection. Putting copper on the outside is sadly pointless. Yes it will discharge static on the outside at a contact point but has zero effect on static inside the pipe - electricity (static or otherwise) can’t discharge through the wall of the pipe. The good news though. It is pretty much impossible to get an ignition in a home shop (as you rightly said). Doing what you have done doesn’t make it worse though as I said above. But it will in no way will provide any significant protection. Sure, 0.8% is better than nothing but the basic risk is as close to zero in a home shop so it makes no odds. If you are worried about static then your only option is metal ducting I’m afraid. If you want a more detailed explanation have a look here kzbin.info/www/bejne/r3KVY56Kqbtnjqs

[@thijs199]

Im gonna give following you a shot, but as Im starting my own guitar building journey. I won't actually be quite sure to be able to. You seem nice. And sooo funny haha

[@johncronin2929]

Daisy - I absolutely love your videos!! Looking forward to many more… J

[@jurrione]

At the start of the video you are using a router on a small body. Do you "pull" your router all the way? Or only where the grain desires pulling the machine?

[@Eeklex]

At least as good as Walt Disney’s explanation of the atom back in the 1950s involving mousetraps and ping pong balls. 😊. BTW, your music soundtracks are my favorite among all builder channels on KZbin.