Off Grid 2 KW Axial Flux Wind Turbine And MPPT Dump Load Controler Build
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- čas přidán 5. 11. 2022
- For the last 6 months on and off I have been building a new wind turbine. My old one was not design for the voltages I run and was made with limited tools and knowledge. now I have a workshop and a much better understanding of wind power I built a new one. it turned out exactly as planned and is working great. once I get some stronger winds I will do an update video of the output.
Thanks to wind power and more for the idea for the controller. you can find his channel here
/ @windpowerandmore6310
The idea for the controller came from another CZcams channel. The clip I had crediting the channel had bad sound and got cut out. But visit wind power and more to see other versions of this controller and some great content. czcams.com/channels/pHl5wAaAYKhWvkDHaRXjlA.html
Make a set of blades man you can make them lightweight out of stainless steel, and instead of having the excess go into the dump wasted, can't you have like a fridge freezer instead ie fridge freezer gets powered by ordinary set up then once ordinary set up cuts out due to overpowering and switched to dump can't the power going into the dump power the fridge instead until things go back to normal so nothing is being wasted etc ? Man if that was me I'd experiment so much I'd probably blow the lot etc I Just can't stop but it's the only way you learn but anyway back to the fridge being powered by the dump after it takes over seems good no? And get those blades made man seriously for the wind turbine I know you can make a banging set of blades ? Try 5 ? Smaller but just as potent etc then the pole won't be taking as much flack, anyway brilliant job and I tell you what once I go electric VERY SOON you'll be making my stator and turbine and blades AND fitting it all too seriously your only A 2 to 3 hour drive from me so all good I'll give you the sizes they have to be and you work your magic with NO TIME RESTRAINT at all plus I'll pay you up front if need be 50/50 anyway apart from my rant good job brilliant stuff and I hope we meet one day so I can have a go at you about something the only thing your good with ? so take care of em mate seriously I know we're not fairies but mate ? take care of em as YOU DO everything else ok 🤗
35:35 Dot's chasing the geese in the background, you better get after her...😉
I have had great success using Polyethylene (PE) on anything I do not want to be bonded with epoxy. One of the cheapest is plastic packing tape, it must have the marking PE on it, if it does it will work. Just tape the surface and the epoxy won't stick.
Because the wind is gusting from different directions did you consider a vertical wind turbine?
What ever project your working on is interesting to me . I’m impressed
Have to say Kris, as an electrical engineer myself your work is very impressive. Nice job!
I agree. Also an electrical engineer and I'm quite impressed how he builds everything himself. Even down to winding the coils. Good old fashioned engineering.
@@redcrow2006 indeed. Good stator and rotor build. Nice 4 pole 3 phase generator design. Happy days.
I too second this
@@sachin.c1211 I three third it.......... and my mate Paddy tree turds it.....
is it wired star or delta for higher voltage? maybe i also missed him explaining that
I've been enjoying your amazing videos for years Kris. As time goes by, I find myself continually blown away by the projects you take on and the breadth of your abilities to complete them. Then to top if off, you film it all and share it with the world, inspiring countless people to go for it and try a project of their own. People like you make the world an amazing place!
Just like me.. Except these projects eventually end. Mine are eternal
@@SLYdevil I m already a fully paid lifetime member of that same club 😂
@@SLYdevil Yea, my buddy says I'm excellent at starting projects.
@@SLYdevil Know & share the feeling..❗🙇♂️🤔
Tired of rebuilding Houses etc., just to vacate or relocate every time i think its done and comfortable..❗
In my retirement now at 77, as a Prof' Consultant i just want to continue with my Hobby in Bladesmithing and thats about it..⁉️🤔
One of the better video of building a wind turbine. Thanks for putting this out so others can learn.
Inventors like you are amazing, watching how you have made this is incredible and if you ever decide to make and sell these, even if they are just for garden interesting objects I’d definitely buy one. I have always wanted an American windmill for the garden but I can’t find any sellers here in the UK!
We’re slowly moving forward towards going green, but the initial outlay together with the software, batteries and ancillary components is unfortunately too expensive right now.
We will get there hopefully, and people like you who create things like this, in the UK, will be so important in the future. You are, literally, the future.
Good luck with your projects, they make fantastic videos.
Would you ever have thought when you were first building the roundhouse that you'd be at the point where you're making more energy than you need? Absolutely amazing, I love all the power content, and I simply can't wait for more building videos!
Now Kris @Kris Harbour Natural Building just needs to use the excess power to pump water up the hill, for DIY *pumped hydro energy storage.* :-)
@@YodaWhat Kris Harbour Natural Energy Harvesting
Yes, I think he had a vision at the start. & It's Good to see the thing come to gather to achieve it. I was born of grid no mains power or water much like him in 1952. but we lived in a of grid cottage. my first windmill I built was, by the use of a 6-volt Dynamo & the regulates & controllers of a ford popular. later & progress to a wood gasifier. That power my battery charging set' which was a engine driving a dynamo back then in my day the set's were army surplus. used by the army. now days there isn't a army surplus shop to be hade. LOL Later we migrated to a 12-volt dynamo. & to day it alternators that we use to charge the batteries. Our dump load was the cow shed light's & the second Bratty bank. We Never wasted an opatunity to generate Power. We stored all we could. No such thin as Soler panels. Things have come on a lot & yes, I think his work as done well. We get some people that often get the opatunity to deliver & contribute. Kris as been one such person. When so often as in my day we got them that would say it won't work, Or your just waiting your time. Or you need to be a qualified Electrical engineer to do that, Like him if I had listened to them, We would have had Nothing, in my opinion he Deserves an MBE. [ & i Nominate him for one] He as blazed a trail for others to follow . & opened up opportunity to power one's house of the grid on the cheap. Today but that debate i suggest is for another Day. Available to be had.
@@YodaWhat Use the excess energy to heat a big insulated water tank and then pump that to his various buildings to supplement heating. Then recover the heat from a steam engine or wood gasifier so that you're heating and charging batteries at the same time in the dead of winter. The rest of the year you can use solar heat.
You are one hell of an engineer !!. Thanks. Dave
The shot of the filings marching around the stator was fascinating
Yes, really fascinating!
Kris. Please don't feel embarrassed when I say, and know others feel the same, that you are inspirational. Well done and thanks as always for sharing your knowledge and journey.
beauty of wind power is it can keep scaling with more turbines don't have to worry about running out of water.
A full hour! What a treat!
Holy cow! Pouring resin over the hours you spent on the windings must've been a crazy intense moment. Way to commit, dude.
I love videos like this because they make me confident that I could reverse engineer some level of technology if I were ever stuck in a time travel situation
Snow and -2°c here in B.C. this morning. Roaring fire lit and and a full hour from you👌 Thnx for making my Sunday Kris.
Kris. Have you thought about dumping the excess power into a water heater rather than waste it to atmosphere? Or use both! i.e. when the water is up to temperature it switches over to the 'air' heater.
That is a fantastic idea !
Thanks Kris, very interesting.
I have to arrange a load dump for my off-grid Solar into a hot water tank, so you've given my lots of useful ideas.
Thanks again.
@10:54 Wax paper is your friend here. Regular kitchen grade. Put a layer of wax paper between the mold and the top board. Resin will not adhere to the wax, allowing for a simple and clean separation.
Additionally, the wax will melt and seal off against the resin surface without intermixing. That seal will block oxygen from entering, allowing for a faster and more thorough cure.
A jigsaw or oscillating tool with no blade would vibrate the air bubbles right out of any future pours. Splendid work as usual, thanks for bringing me along.
I am very envious and wish I had the no fear growing skills that you have, Kris. I have been paying attention to the detail you put into everything you touch and the quality. Also, the 4x4 you fixed is crazy cool! You are a master at just about everything. Thanks for the video!
Hi Kris, yet another amazing video, extremely informative. Never apologise for videos being long, anyone not interested can walk away or turn off. From my perspective, if you filmed all day, I'd get nothing else done because I'd be glued to CZcams. Looking forward to the next one 😃. Great work, well done.
Another great video with some superb information but please think about your safety when using the winch. Never cross a connected winch rope even when slack. They can be killers if the ever break. I know it takes longer but always go around rather than over.
Okay safety message over, thanks for another great and interesting video.
So many things that we wouldn't let a young worker do under our supervision. Simple stuff like wearing gloves when arc welding, being mindful of the kinetic potential of a suspended load, safe lifting of heavy items, etc.
I just enjoy watching anything you make and reasons behind them. All makes sense to me.
Thrilled to see you even wound your own coils
I wind my own guitar pickups, 5000 turns of 42 Awg wire so that was cool to watch 😊
Hi Chris, 32:20 the reason why the blades are tilted back at a 5 degree angle is because on bigger wind turbines blades flex and would end up smashing against the main upright pillar and destroy itself.
For demolding simple hard floor wax/paste works very well with a heat gun smoothing and filling makes for and exceptional surface that can be demolded very quickly and with another application of wax can be used over and over
Great work Kris! Best to you and Dot and all the critters!
I've been watching your videos for over 5 years now Chris and come to the conclusion that when you put your mind to it you can build anything with your knowledge and materials at hand. Another great video. Well done Sir 👏
About the twists in the cables - either a chain (to stop excessive twisting) or a spring which returns the turbine to it's starting position might be worth considering (similar to springs on gates to close them). This may take a while to source but could solve the problem. If you don't sort this and the cables are going to be stretched, although this doesn't happen very often, having them as a standard serviceable part that you can unplug and replace might be worth thinking about for future designs.
Trouble with this is you could end up throwing power away when the wind turbine is prevented from fully turning into the wind, and this situation could last a significant length of time until it resolves. Also it could prevent the turbine from furling in strong winds which could be catastrophic. Just another unfortunate trade-off in a system with no slip rings.
Love the ingenuity of a motivated farmer.
33:57: Just and idea: Since the seal is looking up, you can attach a protective collar/hood (like an umbrella) to the axis, so water and dirt will miss the seal; making it last longer. Thanks for sharing!
Impressive skills! Always look forward to your vlogs.
Personally, I decided my interest level by clicking on the link that sent me here, good sir! 😊 Wonderfully done, Kris! I have no plans to do any of that for myself but I sure do enjoy watching you do it 👍 Excellent work! Thank you!
I tip my hat to you Kris, you are inspirational
It's really difficult to troll a channel like this he does everything so well! I just love watching these videos.
Really nice! The reason you point the blade axis skywards slightly is to give you a little more leeway for blade deflection towards the tower. Prevents the blades from hitting in high winds / bad conditions.
Just a thought. Also the force vector from such a tilt pushes the wind turbine nacelle downwards, instead of upwards. So mechanically less issues with the nacelle flying off ones tower?
@@LAZASASIf I remember rightly Hugh Piggot reckoned it also helps turning when the wind veers
Just something you built in your spare time? Impressive!
@40:00 man what an awesome problem to have. So cool watching you build all this out Kris.
40:19 - if only everyone else in the UK had your problem! That’s what we call in my circle of friends as a “drive by gloat”. You earned every bit of it though. What a great episode Kris.
Great job on piecing together a very interesting video Kris. Always amazes me how much of a renaissance man you really are. Need power? ...build me a hydro, solar and wind system... need a workshop? build me an earthbag workshop. need some lumber? ... fabricate a sawmill. Simply amazing!
Well done Kris, always something interesting, look forward to seeing more of your plans come to fruition.
The things I learned today watching you work, just blows my mind. Nice work sir!
I haven't been to this channel for a little while, I have to say that watching Kris work is incredibly relaxing.
Use quick passes from a blow torch to eliminate the bubbles. On melamine, there are release agents (wax) that make it real easy. If you use wood again, you can use wax paper between the two. The resin won't stick to it.
Yes on the blow torch or heat gun .Misting with denatured alcohol also works .That's how the epoxy artists get rid of bubbles
Excellent video. Your multi talent knows no bounds. You have developed 3 complementary systems and the best I have seen. I look forward to new projects.
My wife and I, from Oklahoma, USA, love to watch your videos.
Watching this with a mate from Vestas and he is quite simply astonished. Magic.
Absolutely love your channel Kris. You are an extremely intelligent young man. Able to use what you have to do what you need. Love watching you and your wife’s journeys. Thank you for sharing brother.
Excellent job of not only going thru the fabrication and construction of your wind turbine, but your knowledge and explanation of how it functions is at the level we can understand.
Best content on CZcams, Kris. Job very well done.
Thank you Kris for sharing all of the details of this build! Great work and a fantastic video!
Put a "Lamp Test" button on the elements to check they are operating ok. A light comes on and you don't have to do a lot of double checking.. Realy enjoyed these video's pf yours and will look forward to the next phase in the homestead growth. Keep up the good work :)
There is only one Harbour in a storm ! You are the definition of the UK backyard boffin. Seriously impressive skills from design through fabrication to assembly - always comes together!
Very impressive! I recently watched some Living Energy Farm videos on DC small scale electric systems using nickel iron batteries. They also have solar DC to power their shop, interesting stuff. Love the step by step approach here, reminds me of physics lab back in college (wrapping copper wire, anyway).
Just built a large off good farm and house off grid using victron kit love to work with kris on a water turbine
What a project! love the longer videos.
I always thought an interesting/useful dump load in the UK climate would be a buried, insulated tank of water that is used to heat a greenhouse through radiant underfloor heating pipes. I've never sat down and done the sums on it but the idea has always been with me... especially as temperatures dip and I wonder what could be grown in a heated greenhouse in winter.
check out some vlogs of all year round greenhouses in the north usa, they use big pipes buried circulating the air, sunken like gruber huts, citrus trees etc. grown in them, the north side is usually a bank of soil
Sand if the way to store heat . An insulated water tank full of sand and run water pipes through the sand as well as heater elements. see this video for an explanation czcams.com/video/kzj1PCA_jxA/video.html
I too like dumpload idea, and underground water tank I know a scientist that has a very large tank that he just paints black lol. The problem with wind were i live is many nights there is very little wind. I would be tempted to heat with solar and use wind to run half the waterpumps.
I been watching for years...amazing. Most of the time I know what you are talking about so it’s all been enjoyable.And now the barn...very enjoyable.
You’re a smart cookie. What fantastic skills you’ve got. Really enjoyed this video.
If you flash your resin with a torch it helps release a lot of air bubbles. Great work!
Kris, you're a rock star. Honestly, I cant keep up with how many things you're teaching yourself. Extraordinary. I am VERY much looking forward to the barn build, perhaps you can feed us some teasers like a picture, and or material you're going to use in the creation of the barn. Strawbale? Board and Batten? Cheers mate.
Brilliant, well played, love you showing us all what you are up too. All the best as usual. Many thanks.
@Kris Harbour Natural Building Thank you alot for making it one single video, instead of chopping it up like other people do. I really enjoy watching it in one session and get all the info at once. Keeping interest in something over months on end, if you are not doing it yourself, is just not realistic.
Excellent content Kris, very enjoyable watching. Must say looking forward to the barn build, excited to see what master piece you'll conjure up this time. Slow & steady, as always.
Awesome job Kris! You do beautiful work and love how you explain things as you go. Thanks to Dot for the drone footage.
It is not that I haven't ever played with really big turbine generators, I just never saw one being built. I am very impressed.
Hi Kris....two simple tips, from a resin pouring Pro.....line things with cling film....its easier to remove as a barrier/release membrane.....and get a large metal tub (like a big stock pot) place a lid, with a hole in it, and use a hoover to draw a vacuum. The lower pressure will cause all of the entrapped air to boil out of the liquid resin....ergo....no bubbles in the pour.
Great video Kris.
It literally makes me physically sick how difficult it is for average Joe Public to put up a usable wind turbine in this country. Planning permission... Lack of companies who offer turbines... and lack of small scale (domestic) wind energy expertise.
Love seeing this kind of thing.
it's as if someone would want to intentionally stifle the development of green energy.
there is no money for them, they need to sell you electicity and fuel at the price they enjoy massive bonuses, just check top managers' bonuses at energy companies
Impressive stuff! Thanks for taking the time to film and share it.
The free education I get from this channel is awesome! Thank you for lighting the way.
As far as protection in case of the solid state dump relay failing, what about switching a bridging contactor to brake the turbine if you have power to the dump relay, but no output from the relay? To avoid a pulsing situation if the signal is from the PWM, make the bridging / brake contactor latch on via an auxiliary contact. This would hold in until you pushed a reset switch. Love your work 👍
Excellent work, this is the best I have seen on this topic. I can't wait to see what you work on next.
Your well researched, well experienced applications of power have been the most rewarding in terms of spending a little of my life quietly observing yours. Inspiring of you to consider where to dump a potential of excess energy. A heater is brilliant in your corner of the world! Perhaps as integral to a real world application of sand battery heat storage...whoops! There I go gushing on again for all the enjoyment you continue to provide in this well presented power video . I'm sure you know we all worried for your shoulder on the lift...but I'll bet Dot let you know that already. Thanks for another great one!
If you have too much power, push it into a big hot water tank and take a long shower or let it be a backup to your main system. That's what I would have done and I would have added a switch to flip it to a heating element as needed or if something was too hot. But very good job on the whole system Kris and good luck forwards. :D
Very very good demonstration , in-depth and very well presented
Hi Kris, you should know that when SSR's fail, they usually fail closed, so that part would be inherently safe as well!
Awesome stuff!
I've been waiting for this video ever since you mentioned it in a video a while back. Sounds like this will make a bonkers amount of power for you too.
It's really cool to see the effort you've put into various small or not so small improvements culminate to a really bitchin setup
Most excellent Kris. Length was no problem. I enjoy watching you create your projects. Keep them comming.
Battery energy storage would be ideal for community energy projects 💚 fascinating video 🌬🌞👏
Excellent Kris, I wouldn't worry about the SSR. It's into a purely resistive load and they tend to fail short anyway. Really interesting video💪
Nice work mate, always interesting and informative, love it. My only point is copper grease isn't a lubricant it's an anti seize, it will wear the bearings out really quick as the copper is abrasive. Just sayin, would hate for you to get it mounted only to have to take it down fore a bearing failure.
Yeah I know its not ideal but its not a wheel bearing. its only going to turn very slowly and not produce any heat at all. I will change it next time its down. The bearings were old anyway. they had come out of my Land Rover when they needed changing.
Great work and thank you for taking the time to tell us about your efforts.
While unbridled wind power generated by a free-spinning turbine is great, and just does fine, I offer the following thoughts for your consideration, noting that you have a PWM output from your controller...
A HAWT works most efficiently with a tip to wind speed ratio of about seven. i.e, the tip is moving at seven times the wind speed. (tip wind ratio = 7 TWR7)
Below and above that TWR the turbine doesn't extract as much energy as it could.
Often (usually, I suspect) the turbine is working in a near stalled state, where the drag of the generator is holding the rpm well below optimum. This will have the undesirable effect of slowing the run up of the turbine to optimum rpm as wind speed increases, which means you are not maximising the energy harvest. In typical cyclic wind conditions I think it will be better to grab shorter bits of charge at closer to optimum rpm than having the turbine spin at near stall a lot of the time, when it is not generating much at all, but it cannot (because of the load) get up to speed.
So to optimise output, it would be good to allow the turbine to spin up to the TWR that approaches seven times the prevailing wind speed before you start to pull load off the generator.
So; rpm counter on the turbine will give you tip speed, and a basic wind speed meter mounted on the pole will give you wind speed. Then, via trivial software and math (using an Arduino, say) you can compare the two speeds and get a PWM output proportional to the speed ratios which you can apply to your poor overworked solid state relay to send the load to the batteries. (A capacitor downstream of the relay may smooth the output a bit, and it will be interesting to see if the PWM rate needs to be controlled a bit to avoid excessive cogging and thus cyclic loading of the turbine as the load is varied. Later)
I believe this method of control will have the effect of letting the turbine run faster and hence it will grab more of the passing wind energy since it is working closer to optimum.
Thinking of it starting from slow spin in low wind, the wind increases, the TWR controller allows the turbine to spin freely up to your desirable TWR then starts pulling power. As wind speed steadies, the turbine is kept in the sweet spot. As wind slows, then the controller promptly proportionally unloads the turbine allowing the flywheel effect to have it spinning faster in anticipation of the next gust. So overall the turbine will operate for more time closer to the optimum TWR.
Practical considerations (like the probability of the rpm exceeding the structural integrity of the blades, bearings etc) may see you choosing a lower ratio (like six or five) but anything approaching the ideal seven will be of use, compared with running the blade far out of the ideal range in a near stalled state most of the time.
Good to keep tip speed below speed of sound. A turbine with blades 1 m long (2 m dia) has a tip path circumference of 6.3 m, so to get that spinning with tips at the speed of sound requires 55 hz or 3275 rpm. That would be in a wind of 49 m/s (176 km/h). Hopefully your feathering mechanism will have cut in before then!
FYI I'm in the process of making a small turbine setup to test this myself and will report when / if I reach finality on that work.
Hope this is of interest to you.
Hi Kris, looking forward to your future 'venture' ------ building the barn.
You've proved yourself to be a man of all trades & this windmill upgrade video is more proof that gas/coal/nuclear power sources have real competition.
From round house to power house you have been a source of imformation to the young & environmentally conscientious & hope to the older folk like myself.
Thanks for the upload, RGDS, P.h.
You can use a blowtorch to quickly remove bubbles from resin. This project is a bit big, but you could also use a vacuum chamber to draw them out
The bubbles were trapped under fiber glass. thats why I had problems getting them out. you can see in the video I had to snip the fibre glass to let a bubble out. im sure a vacuum would work though.
@@KrisHarbour Ah makes sense. If you're going to do much resin work, building your own vacuum chamber would be an awesome project!
@@KrisHarbour though useful, you don't need to mess about with vacuum chambers: if you wet the mat out with resin before putting it on it'll help stop air bubbles, so will agitating the mold when you've poured resin into it - block of softwood in a recip saw or something similar will make the bubbles rise out. (You may have done this anyway, apologies if so. I know how armchair CZcams comments annoy you!)
I don't understand electrics Kris but I find your videos fascinating!...always looking forward to the next ones!.....thanks Kris
You should make like an online course. One of the best explainers of difficult stuff I've heard online. You're a bloody smart dude
Nice job! A solid state relay usually fails short. This is often a problem but if I understood you correctly this is what you would want to happen in this scenario. Still, I'd quadruple the rating and buy from a reliable source.
I find myself so fascinated by every aspect of your journey (since you first walked your land) that it does not matter what project you are on. Your thought processes as you tackle each new challenge and the way you build what you need from scrap are well worth every moment!
Great video as always! I appreciate these long form videos
Longer the video the better, your channel is truly one of a kind. Thanks for sharing your life, creations, and innovations with us.
Hey Chris, a barn build will be superb!! Though the power generation videos are interesting, I do prefer your building constructions. That said, I appreciate that you are sharing a documentary view of your life, and the thing about real life is that it does tend to dictate the direction of travel so I am absolutely not asking you to tailor your content to appeal to my preferences. I think my fascination with this channel is continuing admiration for your choice to escape the rat race, and deep respect for the hard work you continue to invest in realising your ambitions. This isn't a soap opera where the plot is contrived to hold the attention of the largest possible number of viewers, and thank goodness for that, soups are aweful! Far above any trivial observation over my preferred content, I'd like to say thank you for sharing your interesting and exciting journey with us, long may it continue!!! Thanks mate!!
I love watching you build wind turbines. I've watched you carving the blades probably 10 times now, your craft is amazing.
Same goes for James Biggar. He made his Reaper turbine and posted a video here on YT. It's jaw dropping as well.
You’re my fav off grid guy, even though I haven’t a clue about any of it.
Gather round, kids. Kris "Sorry About the Wind" Harbour dropped an absolute banger.
Looking forward to seeing those future building projects.
Great work as always Kris... i can't fault your initiative, technical know-how and sheer tenacity on all your endeavours. Power to ya'mate!!!
It was very helpful you explained each step so clearly. Thank you for respecting how some of us really wish to understand your process. The hook up to your batteries and heater through logic panels were especially good ex planations for us unschooled folk. The range of skills you are mstering is impressive. I love these vids!
48:56 You could make some electric heating elements your dump load and then make yourself a huge sand/thermal battery... You've got the space for it and it should be relatively cheap to make. Install a few electric heating elements in some tubes inside a much larger container, install a few more tube for air flow or liquid flow, make sure it's all sealed and insulated, then just fill it with a few hundred bags of sand. The waste electricity would be stored as heat, thanks to the sand, and if you needed some heat, especially in the colder months, you could just pull the heat from your sand battery to heat your house and/or workshop. I'm not sure what heating method you use currently, but whether it's wood or gas/propane, you'd save on fuel even if you only boost the temp by 5° with your sand battery. At least that way you'd be making some use out of the waste electricity and you won't have worry about overloading anything as much.
my brain just exploded trying to follow what you're building!
For future castings like this, a vacuum chamber will be your friend to get rid of air bubbles and ensure full resin penetration of the coils. You will also want to gel coat the mold so the resin can't stick to it.
A practical alternative to a vacuum chamber would be a vacuum pump and bagging. See Mad's video on the Sail Life channel where he makes a new rudder for his yacht.
@@poruatokin most people who do resin just jiggle the mold with a sander
You should have a medal! Thanks for your thorough way of explaining: Thanks for taking your time to record and put all this here together. You are a champ and a hero. Thanks a lot.
Kris the pulsing is similar to the pint's controller we used on the Trucks & there charge controller we had on out cars. & uresd in the wind mills of my day rapid pint opening & suiting was how it was done on that - system , So that is one way you could go to trip the system . just thought i would mention it in passing.
Great work well thought out. Put the dump load into a heating element into a sand battery one of the most efficient batteries to be made.
Fascinating, thank you so much for sharing what you’re doing. This is the best thing I’ve watched all week.
We love the variety on your channel. Hoping we do still see more of this kind of work. The building is awesome but also like to see all the aspects your have to offer. Great job.