I made a WOOD HOT TUB out of 2x6s

I made DIY WOOD HOT TUB out of cedar 2x6s and it was really easy! We also built an DIY Outdoor Entertainment Center using MSE Audio's Rockustics Cherry Bomb Outdoor speakers: learn more about them here: bit.ly/cherrybombhm This video is sponsored by MSE Audio and we are really excited to work with these high fidelity outdoor speakers that can be installed directly into or on top of the ground. We used a Goal Zero Yeti 400 power pack to power this system and the TV this way we don’t need to run wires underground. These Goal Zero systems are best way I have found to easily take electrical loads off the grid. This cedar hot tub is a surprisingly easy DIY project that only requires basic straight cuts of 2x6s and a couple gallons of flex seal.
Links:
maker brand clamps:
makerbrandco.com/collections/...
Find a Cedar dealer near your:
www.realcedar.com/
Follow us on Instagram: / benjaminuyeda
Hot Tap Water Heater:
www.joolca.com/products/hotta...
Goal Zero Power pack
www.goalzero.com/shop/portabl...
For additional projects and information check out our website:
www.homemade-modern.com/
#DIY #HotTub #Woodworking

[@MrMangofresco]

how is this holding up 2 years later?

[@michellegoodman5109]

After watching the video advert i was still skeptical. But when i finally downloaded the plans kzbin.infoUgkxZF0EMnrujZvqHhGkxiz559uIABJWR9TG i was very impressed. The whole plan was just as you said in the video. Thank you very much. I now have a large and valuable collection for my woodworks. This is great!

[@brocknspectre1221]

Great video! Fast, ingenious, clear and nothing extraneous. Thank you for a brilliant video that gives me what I want and doesn’t waste my time.

[@margueritejack6296]

LOVE LOVE LOVE this! Looking forward to doing this for my friends!

[@davidroeder5548]

For the side panels you mentioned not having clamps long enough. I’ve used ratchet straps before for a similar situation with no problem. Just a handy tip for someone who might have some laying around. BTW if you’re worried about finish I used some cheap moving blankets to protect the piece. Happy making everyone!

[@davidroeder5548]

Also, instead of marine plywood you could always just fiberglass regular wood, and that should be waterproof as well. I kind of stumbled upon your channel so I don’t know if you’ve fiberglassed before but might be a great way to learn/teach a new skill.

[@FlexSeal]

We are loving this DIY Hot Tub Flex Machine! And those speakers are BUMPIN'! When's the party?! 😎💪

[@philuptea]

Sponsor them

[@louisethompson7706]

Love that tannin! Its antibacterial.

[@Smoke---]

Phil?

[@shervonri]

Sponsor!! Sponsor!!

[@vee4869]

All's good until you turn into the toxic avenger

[@learemington1700]

Finished mytub. Actually a Japanese soaking tub. 6 2x6’s high like theirs, 36” square and i used regular hot tub pump and heater. I had a nice piece of black walnut to used it to make a nice “caprail” to finish off the top.

[@SetTheCurve]

I once built a hot tub from pallets and a washing machine pump, with a copper coil going into a barrel with a fire in it. Took all day to heat up, but it was awesome.

[@qwertyui90qwertyui90]

make a video :D ??

[@SetTheCurve]

@@qwertyui90qwertyui90 it was way back in college 😭

[@Boemel]

thats awesome

[@tiffanyholman4028]

Are we going to ignore the Snow White moment, where a chipmunk just came up to her hand and said hi?

[@bluetorch13]

I though the same!!!!!!! 6:39 for those who missed it.

[@MarkH10]

It's a beautiful moment when Joony shows up, which is a name reference from my favorite backyard chipmunk channel. There exists a relationship clearly, but it's great fun, isn't it?

[@TheManumira]

Exactly!

[@julianfavors7219]

Thank you I was just saying the same thing.

[@sambulate]

That's Gary--or one of his ilk. (I follow Jesse on Insta.)

[@BlueCollarDIY]

Wow, that was amazing. I guess it goes to show how well the Flex Seal product works. It's going to be interesting to see how long term this construction is!

[@HomeMadeModern]

yes! but cedar does hold up well and we can only just caulk the cracks if seams do open up.

[@porsche911c]

Good thing he had those Maker Brand clamps, too! Couldn't have done it without those.

[@Clean97gti]

@@porsche911c if someone is giving them to you, that's great. You can get long pipe clamps from Harbor Frieght for not a lot of money. You just supply the 3/4" NPT pipe in whatever length you need.

[@goolly1]

The Chipmunk Inspector at 6:41 gave this job a seal of approval. So I'm all in. Subscribed. 👍🏾🔨

[@jacobcombs1106]

I just want to say how much I appreciate that the native advertisement for the video sponsor was relevant to the main video and instead of distracting from the content actually added to it. Bravo.

[@ChefNateGr8]

"Not coming out quite as hot as I wanted" Thirst Trap Ben over here will heat up the water with his body instead. 😂

[@HomeMadeModern]

lol

[@heru-deshet359]

I would attache a pump to the hose bib drain to cycle the water through the heater and heat up the water faster. Saves money too.

[@frogsoda]

@@heru-deshet359 that's what I was thinking.

[@heru-deshet359]

@@frogsoda Great minds, lol.

[@dennissorensen8765]

Aaaw! The chipmunk, though. ❤️ Really nice project. I really want to build something like this. 😊

[@jackpinesavage1628]

My wife would absolutely love to have one of these to soak in. I'm going to bookmark this to refer to when I build one.

[@TrevorTrottier]

This would require a second mortgage to buy that wood in Canada.

[@joshlockie9285]

Not if you have a buddy with a saw mill

[@wiktorszymczak4760]

Why do america love cider so much? Even those 6 by 6 are cider. Why

[@tiredoftheliesalready]

@@wiktorszymczak4760 Well, some Americans may love it because it can have an attractive-to-them natural color, which is a reason any people group might choose to use one wood over another. As for the 6x6 being cedar as well, well, perhaps they already had it around from another project, or had a use for it afterwards. Also -- cedar is a good bit more sustainable than some other woods used for building. So...reasons?

[@stevenstadterman9725]

@@Zzrdemon6633 How many tree hungers did this guy piss off..

[@jasminecommercemusic]

@@wiktorszymczak4760 cedar is very moisture resistant. very good to use in wet places.

[@Eric_W]

6:40 "Hey did you remember my lunch?" "I sure did, here you go" "YES! I knew I keeps you around for a reason!"

[@nelsonhochberg5182]

I made several hot tubs using 1" marine grade plywood. I glued (from the inside using stainless steel screws) and glued 4 levels of 2 X 6's horizontally around the plywood to keep the plywood from bowing. I also screwed and glued triangular vertical wood pieces in the inside of each corner for extra strength. I then painted the inside of the tub with epoxy paint. Worked great.

[@sullennessa3819]

Would love to see pics of it. It sounds great!

[@Woolymanmuth]

That sounds great! Do you have any plans or specifics you could share? I'd like to try that.

[@jeromeverret]

Plan Please!

[@skyhawk21]

Need something like this for disabled vet

[@acevfx2923]

Yeah, the inside with epoxy is probably what's making it durable. The tub from the video isn't going to last

[@irgeeksauce4165]

6:41 Best part of the entire video. Did anyone else notice that awesome moment?

[@fashionweeknoise9578]

definitely

[@aleksoctop]

What a wild and fantastic little gem of a moment

[@maplic]

Wow so comfortable and ergonomic for just relaxing! A WOODEN BOX!

[@MakerNZ]

Love it. I did a similar one out of marine ply for my container home, did 3 layers and it still leaked in the corners ended up putting lots of clear silicone in the corners to fix it, kinda similar to yours. Respect from NZ

[@WniGrup]

You like soaking in copper arsenate? How's that going?

[@gahbah274]

@@WniGrup Does marine ply really have that? I know pier lumber uses CZA(Copper Zinc Arsenate) but marine ply? You thinking of PWF?(Permanent Wood Foundation/pressure treated ply) Most vendors in the USA won't sell cza treated stuff to non-contractors afaik. I don't think I'd want to soak in a plywood tub regardless though.

[@Robc509]

Nice build. You should do a small test version without the flex seal. There are boats that don't use any sealant at all. I believe the water swells the wood and seals all of the boards. And I'm surprised you didn't offset the boards to have a lap/box joint on the corners, this would give your corners much more strength and allow you to get a fixing in 2 directions. It's a simple design but looks and seems to work great 👍

[@BVLVI]

For some reason this screams to me steampunk jacuzzi!!!! Love to see all the natural copper fittings and all that in a steampunk style really make that thing unique and special.

[@DegavolverMusic]

just found this channel. was very interested throughout, then the moment hit WHOA THIS MANS IS RIPPED. inspiring video all around!

[@WayWoodworking]

Pleasantly surprised it turned out so well! You're always coming up with great unique builds!

[@HomeMadeModern]

yes I. was surprised at how well it worked too.

[@cassia_cries]

loving how many guys are drooling over Ben's muscles! dreaming of 5:24

[@TIICProductions]

😂😂😂😂

[@rhino202]

Caught that too...He was humble bragging on us there

[@HomeMadeModern]

lol

[@joelgonsalves4943]

🤣🤣🤣

[@wilhallman2890]

LMFAO

[@octahedron646]

I’m definitely making one for my garden. Thanks for sharing

[@BerraLilltroll]

Put the ends the other way around. Otherwise it will break.

[@TheGardenerNorth]

I was going to make a silly comment regarding the present cost of cedar, but when I added up an approximate cost, it actually seems fairly reasonable considering the cost of real hot tubs and the annual service costs needed to keep them functioning year after year. You could possibly repurpose this where a hot tub is pretty much garbage in the end. Great video!

[@screwssawdust9992]

Bro if building stuff doesn’t workout you can start a channel on how to get shredded?

[@bjrod1]

Seriously ... homie is ripped !!

[@edgarolivas5407]

He's so chiseled!

[@802Leith]

Has the tannin leaked I know it can be an issue with cedar hot tubs

[@TheDLFBeauty]

🤣 if the building stuff doesn’t work out. This man is brilliant, and back handed compliments aren’t too nice. But he does have a KILLER BODY BRO 🤙🏽

[@Viken43]

HonedMaleMan or HomeMadeMan ... Come on Ben or were off to Modern Builds!!!!!

[@alanscannell]

Great project. Back in my boat building days we used a process called corking between the planks. Basically hammering twine between the boards and when the timber expands it makes it water tight. Could work for this too who knows 👍

[@HomeMadeModern]

Great tip!

[@marb9303]

I like that idea sounds very eco and better for you and environment.

[@davidwalker575]

Amazing project, I really want to appreciate the craftsmanship but man, you’re jacked!

[@QuickHits]

Love the Snow White moment - cool project guys.

[@Wsfletcher]

What in the Disney princess? Did your sister just feed a chipmunk?

[@fishywhiskey2089]

On @ijessup on insta she befriends every creature at makers ranch except the roadrunner 😍 Not quite sure which disney princess she is, which one renovated a poop house? Snow White maybe?

[@BandasPalette]

😁😁😁😁 best comment of the day 👌.

[@EvilSanta482]

Looks like a peanut to me still in the shell.

[@bigscreenbird8198]

Yeah it’s Gary.

[@peadar-o]

Gary no. 11 I think🤔

[@lpeter5781]

I’d be interested is seeing a follow up video a year later and how it’s doing after the wood sits through a winter or two. Cool project with very few tools, I like it!

[@TheyForcedMyHandLE]

Probably sitting in the dump after the YT video dropped.

[@LitoGeorge]

That silicone isn't going to hold.

[@moh19931000]

@@TheyForcedMyHandLE that's what I think too

[@user-tr2dh4xx6u]

@@LitoGeorge also wouldnt the tub mold and crack from the humidity

[@AndreasDuessca]

@@user-tr2dh4xx6u Not when it's dried out after use. That's why he used cedar.

[@thomasscialla1115]

You can build this out of plywood, but you would need to frame it with dimensional lumber in order for it to withstand the outward push of the water. Polyamide Epoxy will seal it perfectly. It comes in a variety of colors (including clear) and it is widely used in plywood aquariums. It would certainly be cheaper to build with plywood.

[@danashay]

Wow! THAT was freakin' brilliant! You have a new subscriber! Please carry on!

[@LivingtoDIYwithRachelMetz]

Yes please.

[@HomeMadeModern]

pink concrete tub collab next!

[@chrisbramell4537]

Cost of lumber probably made this same price as a new hot tub. :)

[@mcplutt]

Don't mention it :-)

[@synocrat601]

Plus the cost of Flex Seal, that stuff ain't cheap.

[@leonitasmaximus4004]

This is probably more than a actual hot tub.

[@paullukis3315]

Post Pandemic, maybe lumber gets cheaper. But Cedar is almost never cheap. Between that and the flex seal, you are probably better off just buying a hot tub if you add in the man hours and tools necessary to do this.

[@firsargentum5920]

Yeah, but you don't have the satisfaction of sitting in your own one-off, hand-made, cedar hottub that you made yourself. It's about the journey man...

[@victoriamonet1117]

Thank you so much for posting this. This will make a great float tank

[@pepepepert]

You could use rigid insulation between the two walls to help keep it warmer.

[@NeverNotMaking]

Tuned in for the tub. Stayed for the abs.

[@aGj2fiebP3ekso7wQpnd1Lhd]

Yes, you can use any wood that will hold the weight of the water. No flex seal needed. Wood glue (TB3) and screws to hold it together. Then, coat the entire inside with commercial grade epoxy. Stone Coat sells it retail and theirs is good up to 600° with a uv inhibitor included.

[@zenginellc]

Mans just wanted to show off the 6-Pack 😂 Jokes aside, this is awesome!

[@davewarren6359]

That is awesome, I made a homemade dumpster for my construction debri, I wish I would've found this video then. This would be an awesome way to make a nice trash and debri bin.

[@NoochaJon]

Dude... you’re shredded! Oh and nice hot tub.

[@HomeMadeModern]

thank you

[@JT-ir6vw]

Pro tip, When using a caulking gun pop the release lever slightly after each use and it will stop the continuous flow of fluid out of the nozzle. Nice project!

[@stanleybowman4464]

I thought popping the release trigger was standard procedure.!!

[@gellotion]

ProTip: Pros use dripless caulkguns. They don't have a tab on the back to pop.

[@gellotion]

The old school ones with the notches on the rod and lever on the back are around $2, while the dripless ones are like $9. The inconvenience of the older ones isn't worth the $7 savings. Treat yourself to an upgrade. You won't look back 😁

[@722Moo]

Cant stop the flow of fluid out of my caulk sorry

[@virginiacharlotte7007]

@@722Moo might wanna see a doctor about that, Sir. 😳

[@xxdeadstockxx]

You guys did a good job making this.

[@nolannatashaTV]

Never occurred to me to use the joolca like this. Amazing!!

[@karlikot]

Damn ben and jessica are sibs goal. Working together for a project and getting shredded and ripped at the same time

[@rhino202]

Some of those warnings were for longevity, not the first fill up

[@substitutebodhisattva]

This looks easier than my circular tub. The birdsmouth scarf cuts on each stick of lumber were time consuming. But good practice for making masts.

[@aaronsoto4622]

geezus christ. These you tube craftsmen have some incredible skill and ingenuity.

[@cps5698]

I'd have flared the short ends out by 15 or 20 degrees for comfy relaxation.

[@Doudojuly]

This is awesome 👍

[@TheGrumpyChef]

Awesome!! I love it and have this on my build list for the new property I am in process of moving to. I would like to build one as you have here, however I would also like to build this inside the new bathroom remodel also. What is your opinion of how the wood would react to soap as I would be using the inside one as a large soaking bathtub? A thought...if the soap would cause damage what is your opinion regarding coating the wood with a surface coating of things such as poly, epoxy, fiberglass, etc?

[@unogazzy84]

That's one cool outdoor tub. Holy crap this guy is ripped.

[@ModernBuilds]

Nice!! 🔥🔥

[@georgemontu1068]

When are you going to make your version??

[@johnwallace6897]

Nice cameo

[@HomeMadeModern]

thanks Mike! those T-bar clamps were a great idea!

[@APHRODITEEEEEE]

I knew I saw Mike! Hey Mike!

[@1nvisible1]

*An overhead camera shot @**11:46** would help potential subscribers understand the build a little better.*

[@kn0ckamus]

Bro, you’re shredded lol

[@micahcampbell5546]

Brilliant work and Great Physique brother!

[@tonyacrawford639]

Hey I loved your design Great video

[@roboslug7582]

Put a double layer of fiberglass over the entire surface, inside and out. You can bond it with epoxy, urethane or a variety of other products. That's how they waterproof cedar strip kayaks and canoes. No leaks, and it significantly increases the strength of the joints.

[@rubenandrethorseth6265]

Is it toxic to have heated water ?

[@roboslug7582]

@@rubenandrethorseth6265 No. Fiberglass is what most commercial hot tubs are made out of. Usually the resin gives off a lot of fumes during the fabrication process, but once it's cured, it's physically stable against heat and mechanical stress, and chemically inert unless you expose it to things like acetone or MEK or other strong solvents.

[@denmark219]

Can you do an update on this? would you change anything? Love the size!

[@samjohnson3124]

that was soooo cute! gave a peanut to a chipmunk!! sooo cute!

[@fingerfeller]

i am sure its very aromatic as well, thanks for sharing your build,

[@GeddyRC]

Thanks for the tutorial! I made one this past weekend thanks to this video :D I didn't have this type of wood but I found some wooden palettes that did the job just fine. I also didn't have all that sealant you used so I went with a craft glue (Elmer's) and it seems to be holding pretty well. I also ran out of screws halfway through (I used drywall screws since the wood was dry and acted as a "wall" for the tub, hence the name "drywall") so started using an assortment of nails I had acquired over the years. We also don't have running water up here (we are up here in the Canadian wilderness in a cabin) so I just built it next to a well so we can fill it with a bucket. All in all, really fun project. THanks again!

[@CTRwannaB]

Who needs flex seal when he can do all the Flexing 😳😂

[@johnlombardo7816]

this rocks, well done thanks for sharing!

[@tonyg6139]

6:40 AWW that was kind of you 🐿🐿🐿🐿 also, awesome build! good content

[@TheFlorian321]

Awesome build! Did you make the sides double layered for stability, or for waterproofing?

[@tedsell1455]

Both

[@sleeplessstu]

I would probably frame the tub with something much cheaper like Douglas fir, insulate with insulating board, and then sheath the entire box with cheaper 6 ft cedar fence board. It would look just the same or even better at less than half the cost.

[@Zomby_Woof]

Plus you would have a removable skin and space in between in case you decided to add jets later.

[@deamoner]

Working on this project now. This was my approach so I could reuse an electric hot tub box with jets and insulation.

[@vinnygoombatts1458]

Great job...I will definitely be buying one instead. My back was hurting the whole time I watched this video

[@Tinbopaloobop]

Brilliant! Like a new clinker built wooden boat, It may leak at first so you must Sink it, to swell the planks and seal any gaps. Your hot tub though already leakproof, can only get better with age 🙂

[@joseph1760]

I would highly suggest to coat the entire tub inside out and bottom in 4-6 coats of a marine grade polyurethane. This would probably dramatically increase the lifespan from rot and the constant expansion and contraction of the wood that's being directly exposed to the elements and water. Like Minwax Helmsman spar urethane

[@jakegray9850]

It's Cedar. It's fine for a long time. Sealing it all in will make it rot faster.

[@Razumen]

@@jakegray9850 Rot requires moisture, if the wood is sealed, no moisture can get in, so no, it won't rot.

[@gahbah274]

Is that safe to bathe in though?

[@HughJanus9999]

But you wouldnt get that amazing smell of hot, wet cedar!

[@kentGrey]

7:35 The banding that they recommended is needed. You filled it with water and tested it for a few days but the outward pushing force is constant and steady. Each time someone gets in or moves around the pressure is increased. The deterioration will take months maybe years but the good news is that it will happen slowly. You may be able to add the bands after the fact to cinch it up.

[@asicengineer]

Banding makes sense on a round tube, just the way you say, but banding isn't going to help with square tube because it can only press on the 4 corners and that is where the screws are anyway.

[@email4664]

If one leaves it full of water all the time

[@janusr3074]

Amazing work and in just 12 minutes.

[@sun6v546]

Costs are secondary , IF your JOY of buildng your own , and its LOT OF FUN with your best mates , NO money can equal that . U have done a wonderful job , Mate . Love you brother , hope you were some where around the corner . Cheers Buddy.

[@Jimbojam]

way to go, this is cool! that's a small drain on that! I treat my tub with food grade hydrogen peroxide, which is $30 a gallon and it would last a long time, maybe 6 weeks, adding a little every other day. I think the marine plywood idea could be cool, or use 1" plywood? it could be interesting to sandwich insulation foam board or something like that and make an insulated cover. what about a filter? anyhow- this is great, thanks for making it!

[@Sunshine-jm2jv]

I'll be looking forward to a six-month or one year update on how this holds up!

[@tigersunruss]

It won't. First he didn't turn the boards correctly and secondly he didn't seal any of the wood, so it will warp over time breaking all connections and also rot over time. He spent a lot of money on a long term fail.

[@DrPepper22222]

Well aren't you just a Ray of light in the world. Have you built a lot of hottubs yourself?!

[@McClimber234]

@@tigersunruss So how do cedar/redwood hot tubs survive for many many years? Thats me sayin you don't know what you're talking about. Just looking out the back door I can see cedar/redwood decks and fences for miles. Those are lasting a long time.

[@dennyofthepines1457]

@@McClimber234 ya, probably won’t rot because cedar is great that way. Most wood hot tubs are made with clear straight grain material because the knots will pass water directly through. Certainly won’t rot but the difference in moisture between the inside, middle, and outside of the tub is going to cause some wild warpage over not so much time, and that could easily cause total failure of the joints. This is one of those things where you can build whatever you want at your own skill level and equipment, but you can’t expect the same results the pros get.

[@gabrieljohannson6777]

Really nice and I'm not talking about the Cedar 😉.

[@learningtolivewithhumans1859]

amazing video and wtf!!! a little chipmunk coming for some lunch?? that was epic

[@davidbarrera3071]

Watching you’re sister feed the squirrel was the best part of the video!

[@miserj]

Totally wasn't expecting to see that in this kind of video :). It was a nice surprise.

[@MikeyB_1972]

I had a 7’ x 4’ cedar barrel hot tub a few years back. I used my outdoor wood burning boiler to heat it. I built a heat exchanger and used a Taco 007 pump to pump the water from the hot tub through the heat exchanger and by utilizing an anti-scald valve, I could set the temperature and just leave it. It worked great.

[@MikeyB_1972]

Also, using cedar is the key. It swells up from the water and makes a tighter fit

[@dynel1984]

Great video! How do you decide which size of wood to use? Like what made you use 2x6?

[@classicjag76]

lol, love how the chipmunk just runs up to get some grub in the middle of your sanding session.

[@jordannec3408]

Can we get a tutorial on how you build those abs?!

[@isaacalderete5844]

good love abs

[@rhm3408]

diet and exercise! :P

[@sanseiryu]

There should be a small benches or seats inside at the ends so you don't end up sliding under the water and not seeing over the sides. This allows you to sit easily without having your arms over the sides to hold yourself in place. There needs to be a small steps or platform on the outside so you can climb in and out of the tub without a slip.

[@nvrluki7608]

Make it and put it in, rather than fixing permanently which makes it harder to clean

[@Grimzoid]

Your right, doesn't look much comfortable as it is.

[@thudang3039]

Cool! Interesting idea/execution! Thanks for sharing. =)

[@spectreberlin1128]

That is a cool project though. Thanks for the great idea.

[@lusenator]

So glad you finally uploaded this! Definitely want to make one of these. Curious what your plans are for treating the water? Chlorine?

[@HomeMadeModern]

we set it up so we can put a hose on the drain and water the landscape at the hotel with the water. so def not chlorine

[@ronhil2914]

Wood, Flexseal, Silicone.. This combo tells me it's gonna rott quickly. Hope you don't mind giving us an update on it after six month-one year of use.

[@pagliaccisghost269]

Right?! I would have lined the inside with black rubber. It also heats the water during the day.

[@mikethelma]

@@pagliaccisghost269 When I think "hot tub" I think "solar". It should not be tough to build a solar furnace to heat up a flow of water to a nice toasty temperature.

[@alexhatcher8812]

its like , "hey, I'm a boat dock with really really really old posts and piers..."

[@JJbear2042]

Does feel seal cause rottin

[@taylordemers7949]

Also burn and many layers of polyurethane exterior. Makes it extremely water proof and binds the boards together with as many layers as you wanna do to really finish off that perfect long-term project you want to extend that value for that diy. Have fun!

[@TheRonellCross]

Great build, thanks for sharing.

[@chadmarkley]

Great video!! Just wanted to confirm though, are those "Maker Brand Clamps"? I wasn't sure ;-)

[@OutnBacker]

I don't know how long you intend this tub to last, or what your weather exposure is where you live, but since you spent a ton on cedar, you might drain it and let it dry completely, then coat the insides with thinned epoxy. This will accomplish two things: 1) Epoxy is waterPROOF, not merely water resistant. Thinned epoxy will saturate into the fibers and not just seal the surface. It will make the wood sort of like a plastic laminate. 2) Raw cedar will soon begin to split and you may get long, sharp "bayonets" that can be very annoying. The boards you used are "plane sawn" not "vertical grain", so they will cup and produce the sharpies. The epoxy will greatly reduce that occurrence. You can leave the outside bare and it will naturally weather to a nice gray, but you could also seal it with a marine/spar urethane for a deep golden finish. Make sure it is UV rated. Nice job.

[@johnymst]

This won't last a year as it is now

[@OutnBacker]

@@johnymst I think it will. The wood will "take up" water and swell the fibers shut, just like the Vikings boats and ships - which would leak horribly until they swelled. To me, it looks like he has enough fasteners, driven deep enough to hold the corners together. Soon, though, all that silicone will be a problem as the wood sheds it into the water and it clogs the drain. That stuff is horrible for staying put. Should have used a polymer caulk.

[@alexandreguillaume6066]

the touch of epoxy feel plastic, i am prefering wood feeling

[@OutnBacker]

@@alexandreguillaume6066 Thinned epoxy does not have a plastic coated feeling. It soaks into the wood and seals it below the surface. It's appearance is like a clear varnish. Multiple coats will provide an attractive waterproof seal that builds up to a smooth touch.

[@tommagloves]

Seinfeld loves Flex seal. Awesome video!!!

[@learemington1700]

Im building one right now on this same design. With the rise in lumber prices have over $600.00 in cedar alone and could not get the finished wood in my area. Had to use rough sawn from H.D. Having to cut the rough off with a table saw and sand smooth at sealing surfaces. Leaving the rough side out for a rustic look. EVEN MORE! Im building a sunroom addition. I framed the floor to allow the tub to recess 12” below the finished floor on a concrete slab i made. Im using a 220v hot tub heater and pump and building it into a step. Its really intended as a soaking tub.

[@cghoward70]

Would be interesting to build one like a wooden boat i.e. marine ply and epoxy.

[@HomeMadeModern]

yes! I am looking into it!

[@woodworks2123]

I love this, I'm Def try this, perhaps not with cedar, I was thinking oak sleepers and if it needs it epoxy the whole inside. Love it tho.

[@echdareez]

That hot tub : phenomenal... BUT THAT PEANUT THAT WAS GIVEN TO THAT CHIPMUNK!

[@kaspar_1982]

i saw a DIY using 4x4's and 1 inch rods threaded at the ends with large metal wing nuts. it used no sealant, just tightening to hold it all together. a saluspa heater unit plumbed into it for heat and circulation, seems to be working just fine for my neighbors. i'll do the same once my soft tub starts to leak.