I completed this project today just as you explained. It is currently 28 degrees so it is taking me a bit longer to heat up. I did put a cover on and tarp to contain some heat. Great video. I am an arborist and own and operate a tree service so I have plenty of wood to burn. I will definitely enjoy a hot tub when I'm at 10,000 feet in my off grid cabin. Thanks for sharing the great info.
Nice video. This concept and design has been around for years. My thoughts/comments are: 1) If you're going through the whole process of making forms and pouring concrete, just make 1 form and make it for the entire size of the tank. Better stability, less chance of the pads coming through bottom of the tank. That's how stock tanks are designed to work. 2) For the heater, build and actual fireplace around your copper pipe and increase the number of coils. That will get your temperatures up and more constant. 3) To retain heat, wrap the tank in insulation and make a decorative outer wrap. Good information tho! 😁😁😁😁
This was pretty well thought out. One serious thing though, because of electrolysis between dissimilar metals there can eventually be corrosion between the copper tubing and steel bars. If you use stainless steel instead for the steel bars it will be ok.
Can't help but chuckle a little of how this reminds me of Looney Tunes where they'd lure someone in thinking it was a hot tub and really be making them into a stew. haha. Looks relaxing! And also looks good for ice baths.
I built my own also and used boiler tube and enclosed the heating coils in a large piece of pipe. It heated fast and after it got hot it took very little fire to keep it warm. Good job!
Thermosiphon is how the water circulates. Cold water is dense, heat rises, creates a natural circulation. Thumbnail girl: i.ytimg.com/vi/HMjpWlgcK-M/maxresdefault.jpg
Quick suggestions. Change the steel/iron support bars to copper if you are going to leave it outside. The dissimilar metals will start corroding much faster then if they are the same metal. The other solution is wrap the copper tubing around something that is being heated by the fire. This will allow much better heat transfer into the water so you can wrap more more turns and have more hot water. Great video and concept.
Super well done!! A huge amount of heat loss is from the ground/concrete/sand, put some foam insulation under it to keep it warm longer and less fuel to hear it.
Chickens need small rocks for their crawp (gizzard), to grind their food. That's why they were interested in your gravel. Feed and Seed stores sell grit for chickens, as well as crushed shells for calcium for egg shells. Love the tub!
A friend did that with a bigger tub for 2. She set it on the ground, filled it with water, dug a small hole at one end and built a very small fire in the hole. Worked great.
Great vid, the inlet at the top of the tub if you put a 90* on it with another section of copper down into the tub. the terminal siphoning would push the water. So your hot water would enter the tub from the bottom, Evenly heat the tub
Here are a few ideas you, or someone making this, may find useful. You could wrap the copper around 8" Duct Pipe from a Stove and move this unit inside. Also you could make more loops closer together so it heats the water faster. Having the copper wrap around the Stove Pipe would keep the smoke at bay and allow the heating to be a bit more efficient. Depending on the Drum you use for the Burner, you may want to make multiple Copper Runs to Multiple Stove Pipes to allow for faster heating of the water, perhaps a copper pipe for each side. Also you may want to install some sort of circulation pump to move the water a bit faster to keep hot spots from taking place. Or you just might want to put a Pound Pump in the Tank to just circulate the water that way. Of you could must make a Copper Run, two connectors at the bottom with a Circulation Pump only, to circulate just the Tub Water so that is move the Cold Water constantly. Great Project....
Dude great idea, I feel justified because I did similar project.. I have no neighbors so I bathe outside all the time!.. I made a tighter heat-riser coil so it would fit into a stovepipe, mounted on a stove made from a propane cylinder.. tempted to plumb/heat my house same way!.. A plus with using a little stove is that you have control of your fire/coals.. Nice!
When I was a kid in Croatia we had a wood-heated bathtub where there was a water tank (similar to today's water heaters you find in your basement, but only about a foot in diameter). There was a place to put the wood in right uner it. When the water was hot we filled the bath. The tank kept filled up and kept heating as the wood burned. Great baths, never this much wasted wood. Was too young to remember the other details of it.
This is why when building a home you put your wood burning stove directly on the other side of you bathroom/shower/tub. If you have a shared cement or rock wall to hold heat between the stove and the shower as well as run hot water or copper tubing through the wall and into a gravity fed water heater you get free hot water while you warm your home in the winter :)
Great idea. Add a check valve to the bottom side of the pipe. This will help when pressure is built up and push out the hot water to the top. Don't know if they make a cooper check valve. But could use a regular pvc bc the heat isn't much on the intake side. Excellent vid👍🏽👍🏽
Been using one of those tanks for several years, but I just set it up on rocks and build a fire underneath it. After all it's a metal tank. But I do have to rake the fire out before getting in and then have a limited time to stay in, unless I want to make a grid floor to sit on above the bottom which I haven't. After a number of years use the seams got to leaking a bit too much so I caulked them. Eventually I'll make a better one for more people, since the oval tank is only large enough for 2.
Yeah very nice. I've been wanting to do one of these for about 7 years now. Never got around to it. I'm glad to see it tried and tested and successful. I have been wanting to make the same thing for my pool, to begin and extend the season here in New England.
I was living off the land on Maui in 1976. When invited up to Haiku to stay in a reconditioned chicken shack I discovered the fudo tub. Japanese by design, it was a ferro cement vessel with copper sheeting on the bottom. You could hack up some wood with a cane knife and start a fire right under it. It also had a big hollowed out bamboo cane, on a swivel, to emit overly hot water and a tap to add cool. After camping on the beach and up in the jungle, all my aches and pains were gone in about 15 minutes.
Try insulating the tub. You can also create an inclosure for the fire and extend a chimney increase the amount of pipe exposed to the fire and insulate the rest
That's exactly what I was thinking. I nice cedar enclosure for the tub and a clay chiminea for the fire. They burn a lot longer so you would get a lot more time out of the firewood and safer in windy conditions. This way you could close the door to dampen the fire to turn down the heat. But the basic concept of using the copper tubing is really the heart of the idea. Fun I idea to develop further.
This is a great idea, I will be buying one to do the same. I was wondering, is it okay to use sea salt or will it corrode the tub? Also, will it leach lead?
What a cool idea, It's easy to do and the design is very flexible. The way things are going globally this could be the bathtub of the future!!!! 😂😂😂😂😂😂
I'm wondering if you could also buy a slightly larger stock tank and put one inside the other and fill the gap with expanding foam to insulate it. That might also make the whole thing more efficient.
Did you tried canging the sides of coil. Like the top output of the coil head to the bottom of the tub? I think it would make the heating process more efficient.
that's not the worst concern, if someone tries to isolate the coil trough valves the water inside it would transform into steam and make the coil explode! it could work if you drain the coil or move it out of the fire trough flexible tubing
Do you have to drain the tub after a few uses? and do you fill the tank then light the fire? Don't understand how it circulates without a pump, is it just because the hot water rises and then dumps into the tank?
I think using a heat shield to protect your copper from direct flames would help it to last longer, as well applying a spray in liner to the stock tank would make it more comfortable and prevent rust.
A Czech friend of mine did something similar but had done it with a small above ground swimming pool and the water was circulating through the pools Pump . The coil of copper pipe were in the fire box of his home made smoker . So while waiting for freshly smoked meat and cheese we had a pool party in winter . Czechneck engineering was my comment !
Genuine question. Every time you use the tub, do you refill it each time? Or do you leave the water in after each use to refrain from using too much water?
Great idea the question why is it if you stop the video at 4:10 it does not look like it's one big coil going from top to bottom it looks like it's all separated and pinched off
So I watched this, then watched the one on the outside fire pit. Would there be a way to integrate the two of them together ? Just thinking that would make for a better system than that just the coil staked to the ground. Just wondering. Love this idea though
The enclosure for the fire would also probably help you regulate temperature better. You could have a door which allows heat to escape when open, or maintain it when closed.
I did the same. It's just like heating a pot on the stove, only scaled up. Except I raised the tub on old steel car rims. I could have cooked a stew for the whole neighborhood, it was that effective.
Put the copper coil inside something like a rocket stove made out of an old propane tank or old hot water heater. Maybe even coat the inside of tub with porcelain and enclose outside of tank with wooden box to help insulate tub. Maybe even sit the tank inside a wooden box and leave a couple inches on all side and then fill with spray foam?
I'm not quite understanding the dynamics. What force makes the water circulate and do you just start with a tub of water that you pumped in with the garden hose? What makes it circulate around. Sorry don't know thermodynamics one bit. Would it be possible to build the coil into a chimney, and then it would be protected and you could load the wood around the coil thru chimney front opening and top as it burns down? Any way to do this, for aesthetics and to retain the heat?
did that myself many years ago with an above ground pool. wrapped copper around a 20 gallon tank, which was the firebox and shoved it into a 55 gal drum to contain the heat.
Why does the water rise in the coil? is it because the pressure differential between the top and the bottom is enough to get the water to flow upwards? or just because hot water rises? I think the latter.
Good intent. You need to isolate the copper tubing from the steel supports otherwise galvanization will occur and the tubing will disintegrate where the two unlike metals are in contact with each other.
I like it, came out great. Probably didn't need to do all that extra work with the concrete pads. I would have removed 2-3" of soil, tamped the soil, then applied a layer of gravel followed by a layer of sand. That tub wouldn't move. The only problem, is having to smell smoke while enjoying that hot water.
ok question...does the cold water from this go automatically into the copper pipe then heats and comes out the top of the copper pipe? im a novice at this.. Thank You
Interesting build. If I do something like this, I will probably build a rocket stove and could the copper around it. I think the rocket stove may be a little more efficient than an open fire.
I built one few years back (used 12 volt solar pump) more coils, and found that soot built up a crust around the coils over time, they get less and less effective, to fix this I wrapped coils around barrel letting the barrel get dirty then the coils.. barrel doesn't build up like the copper coils.. don't know if its the material or the water cooling the soot forming the crust. but does not form on barrel... I also added a drain plug to clean out tub.
@ 2:21 is the first mistake. The heating coils should dump hot water into the bottom of the tub on one end and should draw from the top on the other side. The way he is doing it is like a hot water heater that you draw hot water from for filling a tub, so the hot water up high should not mix with the cold water below and you draw your hot water from the top only. To keep the tub hit the hot should enter from the bottom mixing with the cold to keep the tub warm top to bottom.
The reason that the water flows into the copper tube at all is due to hydrostatic pressure. The means that the pressure increases linearly with depth. The tube cannot "dump hot water into the bottom of the tub" because its pressure will be less than the pressure at the bottom of the tub. Water in that case would flow in the opposite direction. There is no pump here at all. The only thing driving the flow is hydrostatic pressure. There is only one way for the flow to go.
You’re right, BUT he would have to add a whole extra piece to his basically 3 piece hot tub, a pump. He only did it this way because the water naturally flows without a pump because of heat
You need to have to return pipe come in near the bottom of the tub..since heat rises...and the pipe that leads toward the coil take water off the top of the tub. possibly consider a small pump...and maybe consider a little solar panel to power the pump...maybe some kind of outdoor floodlamp kit from a home improvement store. awesome tub though...wish I had one.
pink foam underneath, and spread in/out, say you stove take vertical 33gal barrel wood stove, put lg coppipe on bottom of the tank, any valve to reg flow goes this side then pipe gets slightly smaller, could add find to pickup more heat, or just add flame with chimney under tube(mini-rocket stove to bring up 180gals first GL good stuff, I own/made one of these
I'm not sure, but I think you'd still get circulation if you swapped your fittings - go from the top of the water to the bottom of the coil and vice versa. That way you'd be adding hotter water to the bottom of the tank and get better mixing. Worth a try?
Is there any other materials that can be used besides a metal trough, for some houses it would look great but to mine it would stick out like a sore thumb
This would work better if you used a glass lined cast iron back boiler instead of the copper coil, i am not sure if you have them in the states, but we do have them in the uk, you can retro fit them to a wood stove.
I was thinking the same thing. I'd build it up so you add the sticks(not logs) right at the edge, so you can feed it while in it. I've seen sweet pizza ovens using a rocket stove to heat it instead of the standard bonfire. They got it to +900°F in 30 minutes instead of 2 hours. Oh- and no smoke! (if built like a true rocket stove)
I completed this project today just as you explained. It is currently 28 degrees so it is taking me a bit longer to heat up. I did put a cover on and tarp to contain some heat. Great video. I am an arborist and own and operate a tree service so I have plenty of wood to burn. I will definitely enjoy a hot tub when I'm at 10,000 feet in my off grid cabin. Thanks for sharing the great info.
Nice video. This concept and design has been around for years.
My thoughts/comments are: 1) If you're going through the whole process of making forms and pouring concrete, just make 1 form and make it for the entire size of the tank. Better stability, less chance of the pads coming through bottom of the tank. That's how stock tanks are designed to work. 2) For the heater, build and actual fireplace around your copper pipe and increase the number of coils. That will get your temperatures up and more constant. 3) To retain heat, wrap the tank in insulation and make a decorative outer wrap.
Good information tho! 😁😁😁😁
This was pretty well thought out. One serious thing though, because of electrolysis between dissimilar metals there can eventually be corrosion between the copper tubing and steel bars. If you use stainless steel instead for the steel bars it will be ok.
Can't help but chuckle a little of how this reminds me of Looney Tunes where they'd lure someone in thinking it was a hot tub and really be making them into a stew. haha. Looks relaxing! And also looks good for ice baths.
I built my own also and used boiler tube and enclosed the heating coils in a large piece of pipe. It heated fast and after it got hot it took very little fire to keep it warm. Good job!
the stock tanks come with a built in drain and plug that a hose can screw into. nice for watering the garden after a long soak.
but how does the water circulate? and also.. there was a girl in the bathtub, you shrek ! you transform by night or what?
Thermosiphon is how the water circulates. Cold water is dense, heat rises, creates a natural circulation.
Thumbnail girl: i.ytimg.com/vi/HMjpWlgcK-M/maxresdefault.jpg
yellow2000SR
that is pretty cool, thank you :-)
alaskan bush people just copied this
flyback 2me
what are you talking about? who's hawk?
Quick suggestions. Change the steel/iron support bars to copper if you are going to leave it outside. The dissimilar metals will start corroding much faster then if they are the same metal. The other solution is wrap the copper tubing around something that is being heated by the fire. This will allow much better heat transfer into the water so you can wrap more more turns and have more hot water. Great video and concept.
Did you work on aircraft?
Super well done!! A huge amount of heat loss is from the ground/concrete/sand, put some foam insulation under it to keep it warm longer and less fuel to hear it.
Chickens need small rocks for their crawp (gizzard), to grind their food. That's why they were interested in your gravel. Feed and Seed stores sell grit for chickens, as well as crushed shells for calcium for egg shells. Love the tub!
A friend did that with a bigger tub for 2. She set it on the ground, filled it with water, dug a small hole at one end and built a very small fire in the hole. Worked great.
Great vid, the inlet at the top of the tub if you put a 90* on it with another section of copper down into the tub.
the terminal siphoning would push the water. So your hot water would enter the tub from the bottom, Evenly heat the tub
Here are a few ideas you, or someone making this, may find useful.
You could wrap the copper around 8" Duct Pipe from a Stove and move this unit inside. Also you could make more loops closer together so it heats the water faster.
Having the copper wrap around the Stove Pipe would keep the smoke at bay and allow the heating to be a bit more efficient. Depending on the Drum you use for the Burner, you may want to make multiple Copper Runs to Multiple Stove Pipes to allow for faster heating of the water, perhaps a copper pipe for each side.
Also you may want to install some sort of circulation pump to move the water a bit faster to keep hot spots from taking place.
Or you just might want to put a Pound Pump in the Tank to just circulate the water that way. Of you could must make a Copper Run, two connectors at the bottom with a Circulation Pump only, to circulate just the Tub Water so that is move the Cold Water constantly.
Great Project....
good ideas! thanks!
Dude great idea, I feel justified because I did similar project.. I have no neighbors so I bathe outside all the time!.. I made a tighter heat-riser coil so it would fit into a stovepipe, mounted on a stove made from a propane cylinder.. tempted to plumb/heat my house same way!.. A plus with using a little stove is that you have control of your fire/coals.. Nice!
When I was a kid in Croatia we had a wood-heated bathtub where there was a water tank (similar to today's water heaters you find in your basement, but only about a foot in diameter). There was a place to put the wood in right uner it. When the water was hot we filled the bath. The tank kept filled up and kept heating as the wood burned. Great baths, never this much wasted wood. Was too young to remember the other details of it.
This is why when building a home you put your wood burning stove directly on the other side of you bathroom/shower/tub. If you have a shared cement or rock wall to hold heat between the stove and the shower as well as run hot water or copper tubing through the wall and into a gravity fed water heater you get free hot water while you warm your home in the winter :)
Great idea. Add a check valve to the bottom side of the pipe. This will help when pressure is built up and push out the hot water to the top. Don't know if they make a cooper check valve. But could use a regular pvc bc the heat isn't much on the intake side. Excellent vid👍🏽👍🏽
Been using one of those tanks for several years, but I just set it up on rocks and build a fire underneath it. After all it's a metal tank. But I do have to rake the fire out before getting in and then have a limited time to stay in, unless I want to make a grid floor to sit on above the bottom which I haven't. After a number of years use the seams got to leaking a bit too much so I caulked them. Eventually I'll make a better one for more people, since the oval tank is only large enough for 2.
I like it..
Does the pipe melts with the heat of the fire..?
Yeah very nice. I've been wanting to do one of these for about 7 years now. Never got around to it. I'm glad to see it tried and tested and successful. I have been wanting to make the same thing for my pool, to begin and extend the season here in New England.
I was living off the land on Maui in 1976. When invited up to Haiku to stay in a reconditioned chicken shack I discovered the fudo tub. Japanese by design, it was a ferro cement vessel with copper sheeting on the bottom. You could hack up some wood with a cane knife and start a fire right under it. It also had a big hollowed out bamboo cane, on a swivel, to emit overly hot water and a tap to add cool. After camping on the beach and up in the jungle, all my aches and pains were gone in about 15 minutes.
Try insulating the tub.
You can also create an inclosure for the fire and extend a chimney
increase the amount of pipe exposed to the fire and insulate the rest
good idea!
That's exactly what I was thinking. I nice cedar enclosure for the tub and a clay chiminea for the fire. They burn a lot longer so you would get a lot more time out of the firewood and safer in windy conditions. This way you could close the door to dampen the fire to turn down the heat. But the basic concept of using the copper tubing is really the heart of the idea. Fun I idea to develop further.
Is there any way to adapt this basic concept into a pre-existing in-ground spa?
This is a great idea, I will be buying one to do the same. I was wondering, is it okay to use sea salt or will it corrode the tub? Also, will it leach lead?
What a cool idea, It's easy to do and the design is very flexible. The way things are going globally this could be the bathtub of the future!!!! 😂😂😂😂😂😂
Can't wait to play with this idea. Been wanting to make and outdoor hot tub for a while. Thanks Ben.
I'm wondering if you could also buy a slightly larger stock tank and put one inside the other and fill the gap with expanding foam to insulate it. That might also make the whole thing more efficient.
I've always wanted an outside tub...ever since the FALL GUY tv series! !!!love it man 👍👍👍
Did you tried canging the sides of coil. Like the top output of the coil head to the bottom of the tub? I think it would make the heating process more efficient.
Why not add a valve to stop the circulation of the water. That way you can "control" the temperature of the water by reopening and closing the valve.
I thought about this and will test it but was worried that the coils would get too hot.
that's not the worst concern, if someone tries to isolate the coil trough valves the water inside it would transform into steam and make the coil explode! it could work if you drain the coil or move it out of the fire trough flexible tubing
you need to keep water moving through the coil, i use a similar coil on my home built maple syrup evaporator , great job on this - eric.
you can make the coil exploit because of the increasing pressure of the water vapor.
You could also add a pressure relief valve.
Do you have to drain the tub after a few uses? and do you fill the tank then light the fire? Don't understand how it circulates without a pump, is it just because the hot water rises and then dumps into the tank?
I used the flux capacitor from my Dad’s old DeLorean to help pump the water faster. Now it’s November 2018.Does anyone know how to get me back?
I think using a heat shield to protect your copper from direct flames would help it to last longer, as well applying a spray in liner to the stock tank would make it more comfortable and prevent rust.
A Czech friend of mine did something similar but had done it with a small above ground swimming pool and the water was circulating through the pools Pump . The coil of copper pipe were in the fire box of his home made smoker . So while waiting for freshly smoked meat and cheese we had a pool party in winter . Czechneck engineering was my comment !
freddy c velki didinki
Czechneck! LMAO instant classic.
How do you keep the water clean? Do you use chemicals or a salt water solution? Or do you empty it an refill it frequently?
Awesome project. It's a good thing you have that tall fence or your neighbors would think you're crazy lol
Genuine question. Every time you use the tub, do you refill it each time? Or do you leave the water in after each use to refrain from using too much water?
Maybe you can add a small water pump so it can recirculate way faster?
yes! good idea
You probably will need a temperature gough, so you don't crash a water pump.
Евгений Baltmaster Let the pump Pump the water to the coil, then the pump pumps colder water.
Great idea the question why is it if you stop the video at 4:10 it does not look like it's one big coil going from top to bottom it looks like it's all separated and pinched off
I've done this with my pool about 5 years. Pretty shocking how well it works
So I watched this, then watched the one on the outside fire pit. Would there be a way to integrate the two of them together ? Just thinking that would make for a better system than that just the coil staked to the ground. Just wondering. Love this idea though
The enclosure for the fire would also probably help you regulate temperature better. You could have a door which allows heat to escape when open, or maintain it when closed.
How many liters of water does the bathtub have? and how long did it reach the final temperature? Thanks
This is going to be the next project I do! I've been planning it for a little while but this one is heaps simpler than what I was planning.
awesome! share some photos with us when you do :)
HomeMadeModern for sure! I was planning to have it done by now but it's been pushed down the things to do list... maybe next month!
I wonder if you made a rocketstove and piped the copper tube around it. would that help?
Dig a hole underneath the tank, fill it up with firewood and that's it!!
the metal of the tub would conduct heat differently than the water
I did the same. It's just like heating a pot on the stove, only scaled up. Except I raised the tub on old steel car rims. I could have cooked a stew for the whole neighborhood, it was that effective.
hhhhh
*****
My tub had a valve on the end. All I had to was open it and wait a minute or 2. Empty tub. (and fire totally extinguished).
Double Dare Fan
that
sounds
delicious
Are you concerned about water sanitation? Do you have to drain it each time you use it?
Put the copper coil inside something like a rocket stove made out of an old propane tank or old hot water heater. Maybe even coat the inside of tub with porcelain and enclose outside of tank with wooden box to help insulate tub. Maybe even sit the tank inside a wooden box and leave a couple inches on all side and then fill with spray foam?
good ideas!
I'm not quite understanding the dynamics. What force makes the water circulate and do you just start with a tub of water that you pumped in with the garden hose? What makes it circulate around. Sorry don't know thermodynamics one bit. Would it be possible to build the coil into a chimney, and then it would be protected and you could load the wood around the coil thru chimney front opening and top as it burns down? Any way to do this, for aesthetics and to retain the heat?
actually spellchecker did it again, I was saying "chimnea" ...
Man I could really use one of those right now. This would be great after long hours of work.
Can you do this to a regular pool? To keep the pool warm? Itd be easier than all the work with tubing...
Pretty cool man!
thanks! love your projects!
DIY Creators I am subscribed to both you guys 😁😁😁 you both have awesome projects keep up the great work👍👍👍
Pretty cool huh
did that myself many years ago with an above ground pool. wrapped copper around a 20 gallon tank, which was the firebox and shoved it into a 55 gal drum to contain the heat.
we rinsed off the chickens feet :)
HomeMadeModern maybe try building a cob oven around the coil, which would greatly increase the efficiency
And that is why I love you.
HomeMadeModern z
You are a good human!
great vid! and, also good display of great carpentry skills bruh! I am jelly
Why does the water rise in the coil? is it because the pressure differential between the top and the bottom is enough to get the water to flow upwards? or just because hot water rises? I think the latter.
Ahhhh! watching the chickens zoom around makes me sooo Happy!
hi
I like the idea but if you want to make it in large scale it's worth?
like if you want to heat up a small cheep house you can do it?
Cool, but I want to see a wood fired infinity pool next ;)
Jackman Works or a Lazarus Pit!
Good intent.
You need to isolate the copper tubing from the steel supports otherwise galvanization will occur and the tubing will disintegrate where the two unlike metals are in contact with each other.
I like it, came out great. Probably didn't need to do all that extra work with the concrete pads. I would have removed 2-3" of soil, tamped the soil, then applied a layer of gravel followed by a layer of sand. That tub wouldn't move. The only problem, is having to smell smoke while enjoying that hot water.
ok question...does the cold water from this go automatically into the copper pipe then heats and comes out the top of the copper pipe? im a novice at this.. Thank You
i dont know why but i found the chickens pecking at the gravel very funny
I love how people with tiny yards are the most creative.
The best part of this video were the chickens
yes, they're pretty awesome!
no, It was his getting his shit off, hahahaha JK
I like how they pecked at the gravel for a nanosecond. :)
BOCK BOCK
Linda FG gimmie some money
you can put fins on the copper tubing to increase heat exchange surface and put the copper tubing inside an enclosure to keep the heat inside
That's a cool idea, Ben. Nice one.
thanks Sean!
Is there anyway to automatically control the temperature? There must be some kind of plumbing fitting that can accomplish it.
Interesting build. If I do something like this, I will probably build a rocket stove and could the copper around it. I think the rocket stove may be a little more efficient than an open fire.
i agree! will try it
Did a rocket stove but you have to constantly ad wood . It's easter to do a burn barrel stove and let er burn .
So I know the water can get too hot but how hot does the tub get? Does it get uncomfortable to touch?
I think more coils and a tighter spiral would also increase efficiency.
I built one few years back (used 12 volt solar pump) more coils, and found that soot built up a crust around the coils over time, they get less and less effective, to fix this I wrapped coils around barrel letting the barrel get dirty then the coils.. barrel doesn't build up like the copper coils.. don't know if its the material or the water cooling the soot forming the crust. but does not form on barrel... I also added a drain plug to clean out tub.
you looked much more attractive in the video thumbnail.
J. M. Pérez XD lol
Seriously underrated comment.
That's called marketing .....lol
How much are the materials roughly? I must say I kinda like this project wonder if I can build that on a roof...
Toss in your chickens and a few vegetables and you have yourself a chicken stew! lulz...
Very nice!
Animal abuse!
Xavier Mondragon Jr fuck you dude
Xavier Mondragon Jr cooking!*
Elazul2k in the same tub ;)
i have a question...ok so i am not understanding how the water circulates? does cold water automatically flow in and hot water come out? thank you
@ 2:21 is the first mistake.
The heating coils should dump hot water into the bottom of the tub on one end and should draw from the top on the other side.
The way he is doing it is like a hot water heater that you draw hot water from for filling a tub, so the hot water up high should not mix with the cold water below and you draw your hot water from the top only.
To keep the tub hit the hot should enter from the bottom mixing with the cold to keep the tub warm top to bottom.
The reason that the water flows into the copper tube at all is due to hydrostatic pressure. The means that the pressure increases linearly with depth. The tube cannot "dump hot water into the bottom of the tub" because its pressure will be less than the pressure at the bottom of the tub. Water in that case would flow in the opposite direction. There is no pump here at all. The only thing driving the flow is hydrostatic pressure. There is only one way for the flow to go.
archangel20031 I’m pretty sure the laws of physics would disagree with you.
You’re right, BUT he would have to add a whole extra piece to his basically 3 piece hot tub, a pump. He only did it this way because the water naturally flows without a pump because of heat
You need to have to return pipe come in near the bottom of the tub..since heat rises...and the pipe that leads toward the coil take water off the top of the tub. possibly consider a small pump...and maybe consider a little solar panel to power the pump...maybe some kind of outdoor floodlamp kit from a home improvement store. awesome tub though...wish I had one.
seems this would be good for an off-grid situation.
I could b wrong, but wont the copper fail after like a few more uses? I dont believe it is rated to sit in a fire is it?
You have such a talent! Loved the creativity of this project. Big fan!
Do the chickens help out with most of your outdoor projects?
Are you going to make these improvements ? I live in AZ so there is no sense in making a hot tub here lol.
yes, the next time i am out there.
Andres Rodriguez My wife and I are considering moving to AZ (Prescott or Prescott valley) from Southern California. Any advice? Opinion?
would you consider building some sort of shade over it?
Iron rods and copper tube... bad combination. Sureley corrosion will start accelerated by heat transmission.
pink foam underneath, and spread in/out, say you stove take vertical 33gal barrel wood stove, put lg coppipe on bottom of the tank, any valve to reg flow goes this side then pipe gets slightly smaller, could add find to pickup more heat, or just add flame with chimney under tube(mini-rocket stove to bring up 180gals first GL good stuff, I own/made one of these
My favorite part was the chicken running around. haha they looked soo cute ! ..but yeah that was awesome
they're one of our adorable animal helpers :)
Would you consider building the coils into a steel trashcan?
....make a clay stove around the existing copper coil. Your efficiency on wood burning and temperature will rise dramatically.
How do you empty?
What do you do with water? How many uses?
Now build a robot that puts wood in the fire automatically!
How long does it take the water to be heated?
immortalized chickens - amazing :D
I'm not sure, but I think you'd still get circulation if you swapped your fittings - go from the top of the water to the bottom of the coil and vice versa. That way you'd be adding hotter water to the bottom of the tank and get better mixing. Worth a try?
No.
now add onions, carrots, some herbs...........
Is there any other materials that can be used besides a metal trough, for some houses it would look great but to mine it would stick out like a sore thumb
Now make a comfortable seat for the hot tub.
yes! i was thinking of a tropical hard wood slatted seat.
HomeMadeModern or maybe someting softer that goes under your back, and bubles?
A back rest would be a bonus
This would work better if you used a glass lined cast iron back boiler instead of the copper coil, i am not sure if you have them in the states, but we do have them in the uk, you can retro fit them to a wood stove.
where's the girl from the thumbnail.... 😁😁😁
clickbait 😂😂😂
i wanted to ask as well :D anyway good idea :)
she is my little sister and helps with my projects. She has her own channel th-cam.com/channels/Yqp3_iQYErWMi3VsVT5xzA.html
+HomeMadeModern oh lol. Just kidding
HomeMadeModern that link is broken on youtube app for ios.
noob question but doesn't the tub get hot in the process of heating the water? will it burn when u put your skin on it while you're inside?
You should make a rocket stove for this. It's way more efficient on wood.
Michael Criswell I agree, a rocket stove would be the more effective way to go and it would look awesome.
I was thinking the same thing. I'd build it up so you add the sticks(not logs) right at the edge, so you can feed it while in it.
I've seen sweet pizza ovens using a rocket stove to heat it instead of the standard bonfire. They got it to +900°F in 30 minutes instead of 2 hours.
Oh- and no smoke! (if built like a true rocket stove)
I have some 3/8th in tubing if I use that will it take longer to heat the tub?