DIY Concrete Dumbbells - Complete Guide!

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Learn how to make a full set of DIY concrete dumbbells to build out your home gym. Give yourself the gift of gains this holiday season!
Materials used:
(5) 80 lb. Bags of Concrete - $32
(48) 6 inch bolts - $30
(1) 10 ft. of 1 Inch PVC Pipe - $7
(1) 5 Gallon Mixing Bucket - $4
(2) 8 inch diameter buckets - $8
(Optional) Eggbeater Mixer - $18
(Optional) 4 ft. Corrugated Steel Mesh - $10
Resources:
Calculate the volume of a tube - www.calculator...
Concrete volume weight calculator - www.inchcalcul...
Dumbbell stand - $75
TinkerCAD plans: www.tinkercad....
This is a simple 3D printing browser CAD editor. Just convert cm to inches.
Cut list:
2x6 - (3) 53" - Bottom shelf
2x6 - (3) 57" - Bottom shelf
2x6 - (2) 28" (Or whatever your height preference)
2x4 - (8) 16.5" (45 degree cuts at ends - looks nicer) - Shelf braces
2x4 - (4) 8" - Legs touching ground
1x2 - (2) 16.5" - Top shelf edge guards
1x4 - (1) 53" - Bottom shelf weight lip
1x4 - (1) 54" - Top shelf weight lip
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Опубликовано:

7 сен 2024

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Комментарии : 218

@TheShowgunofHarlem 3 года назад

Nice video man. A few pointers to make the process easier... - Always wait a minimum of 48 hours to pull from mold. 24 isn't long enough. - Try using steel tube, not pvc... it's obviously much stronger, and won't flex with fast motion or higher weight. But, whatever tube you do use, always fill them up with concrete also. - To make the concrete pop out of the mold easier, spray the mold with silicone lubricant first. - To center the handle, use the cap that comes with the bucket and cut a hole, OR use a plywood jig. This takes out the guess work of where center is, AND keeps it from slightly moving off center when curing.

@knowitall8799 3 года назад

All fantastic ideas! The silicone spray would be a lifesaver for 50 lb dumbbells and up. The PVC was more of a convenience choice, it's easier to cut and is way more rigid than I thought it would be. No bend at all even with the 60s. If you're making much heavier, I imagine some electrical conduit would be a solid choice.

@teamcq9204 3 года назад

All great tips.

@stephenthompson1338 3 года назад

Electrical conduit?not a solid choice at all,what about some1"solid bar.not hard to cut with a cheap zip cut wheel on a grinder,and even that is a compromise as it should be cold rolled hardened steel to prevent bending,but since you can't really throw concrete dumbbells around too much anyway it probably won't be an issue.you can't just choose a material because it's easy to cut,why not use some cardboard tube than?it cuts with some craft scissors which is about the only tool you seem qualified to use,just don't run with them and I would suggest eye protection

@djphillyc 3 года назад

i love this video and i love this comentary, i was thinking the same thing with the bucket cap/lid. @know it all, i also think that you should add to the video details the exact amounts of concrete to pour for each weight along with showing us the process, becase i think that part might be a deterrent, or at the very least intimidating for some.

@alexlucero_c1 3 года назад

@@knowitall8799 Hello, Good video, I would like to know how many liters is the bucket, Thank you

@lindap.5921 3 года назад

Honestly- I came back to this video for reference. It's so cool that you attached the volume calculating tool + the Concrete Weight Calculator. 5 Stars !

@knowitall8799 3 года назад

Glad it was helpful!

@jaimenazaryan860 3 месяца назад

@@knowitall8799 are these numbers ,poundS or kilogramms ?

@tud-music 10 месяцев назад

13:45 “you don’t wanna tap it too hard to put pressure on any one particular spot” *bangs the shit out of it two seconds later*

@maximum-oversaiyan 3 года назад

10/10, concretely informative.

@roshandhali5987 3 года назад

Good one😂🤣

@boxoffisa 2 года назад

You cemented it right. That’s a solid analysis. Very concrete observation.

@user-zc2ks7pd3d Год назад

Thats a very solid observation

@MadeUpUserNem 7 месяцев назад

Hard use of words

@jagg94 5 месяцев назад

Hard to disagree

@Teo_Diakor 3 года назад

Those 2 sites you suggest really saved me a lot of trouble and work and experiments with the molds i bought. Thanks a lot for the help!!!

@awemanyfit 3 года назад

Nice video. You explained it well. I want to start making concrete dumbells and selling. Metal dumbells are so expensive in my country. If I make concrete and sell it for quater or half the price I'll make a lot of good money

@DavidSantos-ix1hu Год назад

I would strongly recomend using steel handles if you can find some, I bought a bunch at lowes had then cut it to length I needed bought a bunch of rebar and steel net , some electric tape for the handles. My plan is to cut holes, weld in the rebar, then add mesh on both under the rebar and over for bigger weights. Made one looks beautiful, I think ima chisel the numbers in and add paint.

@seankerr1268 Год назад

Gonna give it a try today. If my weights are uneven I will drill holes in the heavier ones to balance them. Also gonna cover them with liquid rubber. Leaving some breathing area. But this will keep mess down.

@amitchell4206 3 года назад

That’s what a I call a concrete video! 😂👍🏻

@peedey77 3 года назад

I made some great weights thanks to your help. This was an awesome video :)

@knowitall8799 3 года назад

Glad to hear it!

@BRUTUSPLAC 3 года назад

Spray release agent along the inside off the bucket to remoisten the plastic of the bucket, wait 30 seconds or so and dumbbell head will pop out

@teamcq9204 3 года назад

Awesome video. With the pandemic going on, iron weights are SUPER expensive at the moment.

@aricunono6272 2 года назад

Great vid. Use burnt motor oil on walls of bucket for release.

@roadstar499 2 года назад

Getting buckets perfectly level is the key.so take a 4x4 completely flat wood...then add shims underneath so it is perfecly level..use a 2 foot plus level...so unless buckets are damaged they will be level ..also if same bucket is used you could make up some gigs so handles stayed perfectly centered and no fuss with tape or checking distance would be required...great tips...

@painisvergina3693 6 месяцев назад

Thanks for posting this, best method I've seen im doing this

@Lovingisnecessary Год назад

You don't need to be a perfectionist when you do this. You just have to make sure you are doing it close to right and economically.

@RealCarlWheezer Год назад

Yeah and if your worried about the weights not being accurate just switch weights each set to prevent muscular imbalance

@iamb2348 3 года назад

You could add scrap metal / lead to the concrete to make heavier dumbells.

@zoksss5323 3 года назад

Yes

@sidckg5530 3 года назад

Woow bro i thought only we Indians make concrete dumbbells but i was wrong ...god job

@youngshqipe8571 2 года назад

lmao

@carlbenedictbais7422 9 месяцев назад

Really helped me alot! I made the plate loaded dumbbells first but they are really time consumin and very unstable so switching here.

@markumoeder Месяц назад

A very concrete video!

@tanrezaei491 3 года назад

Super cool. Been wanting to make some dumbbells for outdoor use that I can just leave outside. This will fit the bill just right. To get it centered you could have built a centering jig with a piece of wood but you did a great job just eyeballing it. I'm impressed how well they turned out. I really doubt the mesh is necessary for this application but it was easy enough to put it. What I'm surprised by is that your pvc ends didn't stick out of the ends of the dumbbell at all. I thought you'd see the edges a bit.

@arunkumarsajjan8525 3 года назад

U r really great ,because you understand the problem and you helped to make our dream dumbbells you really deserve a subscriber😎🙏🏆👍

@Iamricksanchez Год назад

Bravo on the video, buddy! Don't forget, you can achieve a more polished look and prevent slipping by wrapping the PVC with electrical tape.

@vasiavra Месяц назад

very good idea for minimum cost but if you add a bit of cost to it you will dramatically increase in ergonomics (the 60lbs weight seems a bit too big honestly :D ) you can use cheap rebar and cut it using some inexpensive tool and embedd it into the concrete as tight as you can without it crumbling apart rebar steel density is 7.8tons/m3 as oposed to 2.4 tons/m3 for concrete so almost 3 times more dense so you can get away with smaller sizes

@-eMpTy- 3 года назад

Interesting. I've been looking into die casting plates out of an Zinc alloy called ZA-8. As the name suggests, it contains 8% aluminum which gives increases strength and hardness. Zamak 5, another Zinc alloy, would technically be better but might be harder to source than raw zinc and aluminum. The benefit of using it over just aluminum and concrete is the density (6.3 g/cm³ vs 2.7/cm³, concrete has 2.3g/cm³), but the crucial point is the relatively low melting temperature of only ~380°C compared to the ~1200°C of cast iron. Which makes it easy to use propane or an electric foundry for melting it down and handling and also would allow me to use an diy steel crucible. Will have to do some more research and calculations tho.

@tonyg.8688 Год назад

Did you ever get around to testing this out? I’m interested in the results

@-eMpTy- Год назад

@@tonyg.8688 Sadly not. But on paper it should work just fine.

@henchgamer6996 3 года назад

Very interesting.. I'm seriously considering doing this but I'm the most undiy guy around

@knowitall8799 3 года назад

You can do it!

@thehobbyguy Год назад

Great work.. but only problem is they are way to big in size.. I'd just add some steel in the concrete just to make them usable

@King-walo Год назад

We need more guys like him

@pillowmclovin1253 3 года назад

13:45 not too much pressure... 5 secs later

@knowitall8799 3 года назад

The 60's gave me way more difficulty than any of the others because there's so much more surface area contacting the inside of the bucket. What you don't see is the 10 minutes of tapping between those shots, the broken pieces of wood, and the move to a bigger hammer... Would definitely recommend some kind of release agent for 50s and 60s

@youngshqipe8571 2 года назад

Hahahahhahahahahhahahahhahaa

@jp3mcpherson Год назад

Add some steel shot so they aren’t so big and cumbersome.

@raqeemaldabbagh698 2 года назад

The reason why I will make my own dumbbells is that I can’t even buy dumbbells in my country only 10kg max available or I have to go to the gym and I live far away from the city I have been in the gym 3 months now but yeah my gym costs 50$ a month also gas ⛽️ costs me way more then 50$ so yah i guess I will make my own dumbbells

@GymBullie 3 года назад

Amazing video they came out great ..... but for further reference wen u going up it not level it’s plumb

@knowitall8799 3 года назад

One piece of knowledge closer to knowing it all!

@tonytuesday8339 2 года назад

Awesome video! I was just thinking maybe fill your handles first and take the weight into consideration the handles won't fill the same every time!

@randomrandom5740 3 года назад

if it's hard to level, why not make dumbbell plates instead of whole dumbbells?

@emelyflores3818 Год назад

Porque los discos funcionan para todo el cuerpo y las mancuernas lo hacen para los brazos principal cuando es pesado

@ellipticalgamer311 2 года назад

Thanks been looking on RU-vid on how to 3d print them but I’ll probably do this instead very helpful

@mosesgtz.h.7014 2 года назад

One idea to make those dumbells smaller would be adding pieces of metal, anyways those look great.

@jamesthorne222 2 года назад

I’ve measured the sand and cement mix dry to the weight I want the dumbbell. Once the water has evaporated I’m hoping it’ll be very close to the same weight.

@professored7169 2 года назад

Pretty much will be, but it will be heavier, because when you add water to the concrete it chemically bonds to the lime so it will never leave, the extra water will evaporate, but concrete soaks water like a sponge, so if it's humid than the concrete will soak the water from the air

@DavidSantos-ix1hu Год назад

Good stuff cheaper then a cheap set of dumbells, thry go about 90 for the horrid ones and about 500 for good ones so its a nice deal .

@thomaswest2583 3 дня назад

My biggest concern would be the pbc pipe breaking at higher weights. Like for example I lift 85 pounds 8 sets of 30 and 22 sets of 30 at 75 pounds. I'm certain this would hold up there. I'd be afraid for it to break and fall on my foot.

@BRUTUSPLAC 3 года назад

easier to put 4 small screws at 3 / 6 /9 /12 Oclock and use old shoe strings to keep pvc pipe square

@artbyoge_yt4877 3 года назад

You’ve gained one subscriber 👍🏾

@artbyoge_yt4877 3 года назад

Also how do or did you build your dumb bell racks

@knowitall8799 3 года назад

There's a 3D model design in the video description. Check it out for dimensions and cuts. It's a 3D printer mock-up website but just think of each unit as an inch. Cut list: 2x6 - (3) 53" - Bottom shelf 2x6 - (3) 57" - Bottom shelf 2x6 - (2) 28" (Or whatever your height preference) 2x4 - (8) 16.5" (45 degree cuts at ends - looks nicer) - Shelf braces 2x4 - (4) 8" - Legs touching ground 1x2 - (2) 16.5" - Top shelf edge guards 1x4 - (1) 53" - Bottom shelf weight lip 1x4 - (1) 54" - Top shelf weight lip

@peymany.a5071 3 года назад

Thank You that was awesome i'm going to make some...

@livinglifecustom4558 3 года назад

Great video, very accurate. Definately giving this a go

@jairomartinez3025 Год назад

Eres de los pocos, que hacen estos pesos excelente 😎😎😎

@successfulusername Год назад

Hmmm. Really cool but I don’t trust that pvc handle. Do incline press with those 60s and see how comfortable you are with 60lbs of concrete hanging over your face

@HaIsKuL 3 года назад

Could you spray it with Flex Seal to make it more durable?

@knowitall8799 3 года назад

Yes, it would make them more durable and keep dust from falling off the rough edges.

@CHEF.ELEMENT 3 года назад

You’re a genius

@miguelterrero6577 3 года назад

How about a video on your dumbbell rack......I mean I’m putting the cart before the horse cause I need to make the dumbbells first but do you have a video for the rack they’re sitting on?

@knowitall8799 3 года назад

I don't have a video of the making of the rack, but there's a cut-list and a viewable CAD design in the video description. Thought it might be too specific to the fit of the dumbbells for a video.

@phinhager6509 Год назад

PVC is strong enough?

@user-tu4rj2eu7t Месяц назад

Honestly why risk it

@badhonebrahim7707 3 года назад

not separating the concrete from the bucket gives you extra protection and longevity

@thesouthafricanlad7446 3 года назад

Great video. Very informative

@PracticalBibleStudies 2 года назад

This is a solid video.

@kingbiibii 11 месяцев назад

Its 2023. I use my Meta & A.I for my planning

@davidmatheis7260 9 месяцев назад

Great video thank you

@hynferno 2 года назад

Just love them...

@JamesPhillipsOfficial 3 года назад

For heaviest dumbell design, using a lathe and tree stump, create 1 piece fillable wood dumbell, the handle is carved out integrally and with hollow bucket either side, fill with lead shot, then add a face plate, then weigh it would do the video if i was able lol i cant own a lathe atm it would be very messy, lots of waste, but an unbeatable diy dumbell imo

@youngshqipe8571 2 года назад

Thanks for the advice

@ghuruba88 3 года назад

Thank for the video

@beachfiredude 3 года назад

Right on thanks

@animationscreations3589 Год назад

Thanks man

@Catastrofius Год назад

I am surprised that you are not putting some sort of release agent on the bucket in order to more easily separate it from the concrete.

@rclewis01 Год назад

1 inch pvc is 1.315 inches at the outside.

@tamiajackson 2 года назад

I'm wondering how long this will last.. wouldn't the PVC break??? Forgive me I don't know much about these things..

@MassachusettsTrainVideos1136 Год назад

Use a steel pipe

@stianj.asgautsen9180 3 года назад

Where did buy the 8 ich in diameter buckets , its hard to find in my country

@Juanau79 5 месяцев назад

Just grab some gritty sand paper and un smoothie handles a bit! Great job tho!

@blankblank2345 3 года назад

thanks

@Marco-fl3qp 3 года назад

How many bags of concrete and pvc pipe did you use for all those dumbbells at the end of the video? Did you use all 5 bags of concrete to make all those dumbbells?

@knowitall8799 3 года назад

Depends on what bags you get. In total there are 430 lbs of dumbbells there. If you get 80 lb. bags, you'd need 6.

@87AndreasW 3 года назад

should have used a single rolled meshed cylinder instead of single pieces of mesh.

@javkthong7113 3 года назад

Great vid 👍

@alexandrinaevertonsantanas5728 Год назад

arquiteto dos halteres....parabens !!! mas como faço para deixar a parte do cano onde segura mais forte ... posso colocar concreto por dentro do cano ??? com um ferro fino que encaixe por dentro , assim tornando o concreto mais forte ???

@KyleCorwith 3 месяца назад

Is pvc pipe really going to support that though?

@runninescape09 2 года назад

bro i done this before that shit was a mess and fun

@gianmarcoastudillonery1966 2 года назад

Excellent video and amazing work. It is very informative and helped me a lot to do my weights. You inspire me and I like the fact that I have the budget to deal with. Thank you very much for your work. could you teach how to make a cheap barbell please?

@BRUTUSPLAC 3 года назад

SPRAY buckets with PAM or store brand

@solventtrapdotcom6676 3 года назад

Why not make then hexagonal or some such?

@knowitall8799 3 года назад

The buckets are a cheap mold that's readily available for anyone to purchase and replicate these dumbbells if they'd like. But you can make them whatever shape you'd like if you find a mold or want to make one.

@maxchipchase9447 3 года назад

When doing the other half of a dumbbell how are you getting the Top half to sit perfectly in the wet cement and not sink?

@maxchipchase9447 3 года назад

Otherwise everything seems perfect and well described to do tomorrow

@knowitall8799 3 года назад

The handle sinks all the way to the bottom. The end result is what you see on the rack. You'll see a faint ring where the PVC pipe is on the outer edge.

@Matt-v5s 3 года назад

How do you know the amount of water you’re supposed to put in

@davidliftsheavycircles 3 года назад

I actually built 10-80s based off his videos. It says how much water to add on the concrete when you buy it. That being said when you do that it comes out a lot more like a paste then a liquid and when it dries it turns out very bumpy/sharp on the top part that faces your hands. Ive actually cut myself with that. So add more water then it tells you so you get a nice smooth outcome on top. Just add a little water at a time. Its not hard to get it right by adding a little at a time. Go more watery then less, and make sure to oil your buckets beforehand

@DanteLikesRock 3 года назад

@@davidliftsheavycircles more water makes them easier to break. Would not recommend.

@sonnymylovesosweat 3 года назад

Grinder it to take out the weight off

@jeffmurnahan Год назад

Awesome

@rubenbond6942 3 года назад

Tenias que ponerle aceite al balde y salía solo el disco.

@ivanabdullaev859 2 года назад

Hi ! Thnx for the sharing. Is that weight on the dumbbells specified in kilograms or pounds? thanks

@thomasbagshaw-jones5011 3 месяца назад

Hi how long will the concrete dumbbells last

@riffdex 3 года назад

Be honest - how many times has your cat knocked the dumbbells off the rack? 😂

@serahlesuma6351 3 года назад

just curious, how do you make your cement mix? is it just straight cement and water, or do you add other stuff in it?

@knowitall8799 3 года назад

I used Quikrete High Strength bags. You can purchase bags with fiberglass in the mix to strengthen and help resist cracks.

@ActionsDoneByGodMix 2 месяца назад

Did you use a 5 litre bucket?

@TheBcoolGuy 3 года назад

My problem with concrete weights is tbat they're so god - dayum THHHHHHICC!

@cloudstrife778 2 года назад

Are those 1/4 inch x 20 x6 bolts? Also, if not will that work for this?

@chimenesalexander Год назад

Parabéns! Ficaram ótimos!

@8KrepE7 3 года назад

What type of containers did you use for the smaller weights ?

@knowitall8799 3 года назад

I used the same buckets for all of them so they are all one consistent diameter

@schweddyhandmcduff 8 месяцев назад

@@knowitall8799what store did you find these buckets at or so you have a link?

@JoseNunez-gx3gk 3 года назад

Noice thanks man

@ikiamediciones 11 месяцев назад

El PVC SE ROMPERÁ POR EL PESO DE LOS CILINDROS DE CONCRETO.

@fiddysic Год назад

Do these work as good as regular dumbbells?

@0ptimal 3 года назад

Cool

@johncassidy897 3 года назад

Are the 60s and up to big to curl and do certain exercises with? Thanks

@knowitall8799 3 года назад

The 60s are as heavy as I'd go with an 8" diameter bucket. They're slightly larger than comfortable, but I'm able to press them without issue. I imagine curls would be a little clumsy with them, I'll have to let you know when I'm able to curl them haha.

@arpitsharma7695 3 года назад

aren't the buckets in the shape of a cone? at the bottom the diameter is smallest and as you go to top of bucket, the diameter gradually increases. Don't you have that issue?

@knowitall8799 3 года назад

These specific buckets are very slightly slanted. As close to vertical as I could find.