DIY - Cheap Concrete Dumbbells

2020 ж. 7 Мау.
118 045 Рет қаралды

In this Video I show you how I made concrete dumbbells for the less than $30 per set.
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My website: www.fixitwithjerry.com/
Affiliate Disclaimer: www.fixitwithjerry.com/affili...
Blog Post for this Video: www.fixitwithjerry.com/diy-co...
**** UPDATE NOTES: I made updates to the US Standard measurement to make them more accurate and added a decimal to fraction conversion chart. Also, due to security reasons by my web-host provider I am no longer able to offer XLS downloads. I have also added a METRIC chart. Both are available through the link below! Thanks for watching! ****
PDF Imperial and Metric Chart - www.fixitwithjerry.com/diy-co... - then scroll down.
Calculator for tubes other than 8" - ustesg.com/calculate.html Credit: Ustes Greenridge
Affiliate Links: - Thanks for your support!
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Tools and Materials in this video
8" Form Tube: homedepot.sjv.io/qYPJy
1" EMT Conduit: homedepot.sjv.io/mYQAX
80lb Concrete: homedepot.sjv.io/Y7Z6R
Hack saw: homedepot.sjv.io/Rqxqb
Trowel: homedepot.sjv.io/M7rJK
Razor Knife: homedepot.sjv.io/4X41Z
Tape Measure: homedepot.sjv.io/N7jZK
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Other Tools:
Rigid Cordless Hammer Drill: homedepot.sjv.io/5BGb9
Rigid Impact Driver set: homedepot.sjv.io/LEbKj
Cordless tool pouch: homedepot.sjv.io/9q5VW
Dewalt Socket Set: homedepot.sjv.io/jaoRe
Husky Rolling Tote: homedepot.sjv.io/5z9kj
Gorilla Step Ladder: homedepot.sjv.io/ejVnr
6-in-1 Screw Driver: homedepot.sjv.io/A5Jgj
Cordless drill pouch: homedepot.sjv.io/9q5VW
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High-strength Concrete Mix (crack resistant if you can find it) 80lb bag ~ around $5 Dollars
8" Concrete form tube - sold in 48" lengths ~ about $10 Dollars
1" metal conduit - sold in 10ft lengths (or iron pipe if you don't have the means to cut it) ~ $11 dollars
Duct Tape ~ $5 Dollars
Total Cost with materials to spare: Less than $30 Dollars
An 80lb bag of concrete will yield one set of 40lb dumbbells (makes sense right?). You will have left over form tube and conduit so the best value here is to make more than one set. The Crack-resistant concrete is the best because it has tiny fiberglass fibers in it that make it stronger. You definitely don't want to use any fast-setting concrete or motor mix. I made sets 40's, 45's, 55's, and 65's and used 5 80 lb bags.
You could also use the same concept to make barbell weights if you want.
List of Materials:
- High-strength Concrete Mix (crack resistant if you can find it) 80lb bag ~ around $5 Dollars
- 8" Concrete form tube - sold in 48" lengths ~ about $10 Dollars
- 1" metal conduit - sold in 10ft lengths (or iron pipe if you don't have the means to cut it) ~ $11 dollars
Total Cost with materials to spare: Less than $30 Dollars
An 80lb bag of concrete will yield one set of 40lb dumbbells (makes sense right?). You will have left over form tube and conduit so the best value here is to make more than one set. The Crack-resistant concrete is the best because it has tiny fiberglass fibers in it that make it stronger. You definitely don't want to use any fast-setting concrete or motor mix. I made sets 40's, 45's, 55's, and 65's and used 5 80 lb bags.
You could also use the same concept to make barbell weights if you want.

Пікірлер
  • This is by far the best DIY video for concrete dumbbells. Nobody else was filling the handles with concrete. It was driving me nuts lol. Great video

    @LostMemoriesFilms@LostMemoriesFilms Жыл бұрын
    • Thanks, let us know how yours turn out!

      @fixitwithjerry6161@fixitwithjerry6161 Жыл бұрын
  • this is the best one ive seen. a lot of people just roughly measure the measurements. good stuff using the volume for a cylinder

    @asianuqwest@asianuqwest3 жыл бұрын
    • Thanks! I have moments of OCD that kick in randomly.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • Keep the mix on the dry side, and tap the forms with a hammer to remove air by vibrating the concrete. The surface will be smoother and let off less dust, and be less brittle. Wet concrete is weak and dusty when cured.

    @ryanmcgowan3061@ryanmcgowan30613 жыл бұрын
  • Great video, thanks man! I made a pair of 50lb dumbbells following your procedure precisely and they came out at 50.2 lbs and work great.

    @rustybarrelhomebrewing1017@rustybarrelhomebrewing10173 жыл бұрын
    • Awesome!

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • I made these when the gym became a pain the ass during the plandemic. I used various (cheap) paint mixing tubs and buckets and embedded chicken wire, then coated with epoxy resin for a glossy, clean surface. Cut a hole in the lid to center the pipe. I still use them. They're indestructible and look sharp.

    @rharris0820rh@rharris0820rh5 ай бұрын
    • Nice!

      @fixitwithjerry6161@fixitwithjerry61615 ай бұрын
  • Thank you. I like how detailed the spreadsheet is in regards to the diameter and height of each molding.

    @heleng4528@heleng45283 жыл бұрын
    • Thanks, I tried to make it as clear as possible.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • I just made a business at my school just doing what u say on the video I made 6k at my high school am planning to do this when I go to my college in 2 years thank you so much for changing my life by make videos like this

    @lapear6068@lapear6068 Жыл бұрын
    • Get it Bro!

      @fixitwithjerry6161@fixitwithjerry6161 Жыл бұрын
  • Just what I've been lookin for!!!! Thank you very much.

    @DAKOTABOWINWV@DAKOTABOWINWV3 жыл бұрын
  • Very helpful. Thanks Jerry!

    @mickeysealtoe9719@mickeysealtoe97194 жыл бұрын
  • The best tutorial I’ve seen. Thank you

    @SimRan-ur5nl@SimRan-ur5nl3 жыл бұрын
    • Thanks!

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • ANYONE STILL haVE THEIR dumbbells, ? i made 20-60 lbers in the last 14 months, sold them all . ( bought a 50 LB HEX MOLD 1 YEAr ago ) NOW winter is here in CT time to make more .

    @BRUTUSPLAC@BRUTUSPLAC2 жыл бұрын
  • Amazing tutorial! Thanks

    @Highintensityhealth@Highintensityhealth3 жыл бұрын
  • Great detailed video for once! Most others are unclear, but this one goes in a fair bit of detail.

    @michaellk2254@michaellk22543 жыл бұрын
    • Thanks, My OCD kicks in randomly

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • Love it! Thanks for sharing.

    @richsam287@richsam2873 жыл бұрын
  • epic video. Thanks for this!

    @HazmatEsports@HazmatEsports3 жыл бұрын
  • Amazing thank you for sharing!

    @kimbo9643@kimbo96433 жыл бұрын
  • Everything i need in one video thanks for the well makinggness of this video man

    @Abdo_3005@Abdo_30053 жыл бұрын
    • Great, thanks!

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • Thanks just what I needed

    @watsonlow22@watsonlow223 жыл бұрын
  • Make a video like this for barbell plates. This was super helpful. Thanks

    @benbaily7925@benbaily79253 жыл бұрын
    • Plates would be more difficult but I may give it a shot. Thanks!

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • great video thanks a lot!

    @michaellabate4574@michaellabate45743 жыл бұрын
  • I made a full stack of 10, 12.5, 15, 20, 25, 30 KG dumbells.I also built a rack for it.

    @ismailramdan5095@ismailramdan5095 Жыл бұрын
    • Outstanding!

      @fixitwithjerry6161@fixitwithjerry6161 Жыл бұрын
  • Nice work. I think I'd use the heaviest pipe possible for handles to reduce the volume of concrete required, at least this would be my strategy for heavier dumbbells. Solid steel bar would really be optimal for the heaviest in order to keep them as small as possible.

    @mitchd949@mitchd9493 ай бұрын
    • True, but that solid steel is going to be real pricey!

      @fixitwithjerry6161@fixitwithjerry61612 ай бұрын
  • The best tutorial ever

    @JayTVIndia@JayTVIndia2 жыл бұрын
    • Thanks!

      @fixitwithjerry6161@fixitwithjerry61612 жыл бұрын
  • Great video. Think I'm gonna go for your idea to make a bar bell version!

    @coreystinar7453@coreystinar74533 жыл бұрын
    • I'd like to see it!. I want to do some more but it's hard to find the time.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
    • @@fixitwithjerry6161 I poured the first weight today. I'll see if I can get some pics tomorrow. I understand that, thankfully had some time off for new years and I wasn't hung over this year.

      @coreystinar7453@coreystinar74533 жыл бұрын
  • The best and accurate one :) thanks man

    @jecksantos2892@jecksantos28923 жыл бұрын
    • Thanks!

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
    • Quick question to can i use meters instead of cm.?

      @jecksantos2892@jecksantos28923 жыл бұрын
    • @@jecksantos2892 there's a metric version of the chart on my website.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • Empty 4L paint tins work good also and you don't need to take them off. Also fairly weather proof.

    @bossdog1480@bossdog14803 жыл бұрын
    • Nice, good idea. I've also thought about using Large PVC pipe which would be better than metal outside.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • Thanks man

    @immortaldance1234@immortaldance12343 жыл бұрын
  • I am going to the hardware store to get the stuff. Thank you for a great video. I am not going to pay 300 for a pair of 50 lb barbells and even more for 60 lb. Dam price gauging.

    @robertlcervantez9964@robertlcervantez99643 жыл бұрын
    • Yea it's pretty crazy how expensive free weights have gotten.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
    • I found this video because other DIY ones are suggesting to buy a $100+ plastic mold. Just use a bucket or the cylinders in this video. The whole point of DIY projects is to save money.

      @zachm9705@zachm97053 жыл бұрын
    • @@zachm9705 Amen to that!

      @davidmetz1893@davidmetz18933 жыл бұрын
  • thank you

    @Amazing.World.2024@Amazing.World.2024 Жыл бұрын
  • Do a tutorial for some hexagonal or octagonal dumbbells please, i loved your video keep it up!! :)

    @victormanuelbaltazarmontoy7462@victormanuelbaltazarmontoy74623 жыл бұрын
    • Thanks! Hex weights would be real tough, might have to custom build a form, then the math on calculating the volume of a hex cylinder... Yikes. would probably be cheaper to buy them at that point.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • Nice!

    @nathansgym@nathansgym3 жыл бұрын
  • The is definitely the best one I've seen. The description of everyting is great. One question, what would the measurements be for 5lb dumbbells? Would I just divide the measurements for the 10lbs by half?

    @jioncooke2621@jioncooke26213 жыл бұрын
    • The reason I didn't go below a 20lb dumbbell is because it just gets too thin to have any structural strength. If you look at the chart I made, an 8" tube at 20bls (10 lbs per side) is less than 3" thick. Below that I would try and source a different mould material and make a form that is maybe 4" in diameter instead of 8". Each side would be smaller in diameter but thicker and have more rigidity. I hope that makes sense.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • I just bought the materials. I’m thinking of adding scrap metals i can gather from work. We scrap penny size, quarter size and some larger ones by thousands a day or the nuts and bolts that are dropped or rejected by machines. We don’t reuse dropped parts as they can collect debris that would cause problems on welding quality. I’ve also gathered screws snd and nails when i was doing home renovations. I could also use those. Nails and screws would make it stronger like using rebar! It would cut the size of the weights.

    @Azntoo60@Azntoo603 жыл бұрын
    • Good idea, just make sure to bury them deep enough in the concrete that they done rust from the inside out. You'd want at least a couple inches imbedded I would guess.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • cool project!

    @NegronDennis@NegronDennis4 жыл бұрын
  • I know this video is a couple months old but for those like me just getting started to making your own weights, if you have a concern about durability of concrete weights you can spray them with flex seal and even heard people using truck bedliner as well to improve durability.

    @greatdane1092@greatdane10923 жыл бұрын
    • Valid concern, I used these weights for 3 + years and they survived two moves before I finally bought real gym equipment. Never had a failure but I also never dropped them on bare concrete - either grass or gym mats. I would imagine the handles would bend before the concrete broke especially if you use the high strength stuff with fiberglass in it. I do mention painting them with rustoleum in the video, any kind of paint or covering would help them hold up better outdoors. Maybe I should build another set and do a durability test video..

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • Awesome thanks. Might want to think about ways of further securing the bars in the concrete.

    @shawnregina9110@shawnregina91103 жыл бұрын
    • It's been mentioned a surprising amount of times but it's a non-issue. I'm making a destruction video to see the difference.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
    • @@fixitwithjerry6161 interesting. I’d like to see that.

      @shawnregina9110@shawnregina91103 жыл бұрын
    • @@shawnregina9110 just gotta find the time between my dayjob and life ya know. It's in the works.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
    • @@fixitwithjerry6161 no doubt. The fact that you do any videos at all is a blessing. Take your time 💪

      @shawnregina9110@shawnregina91103 жыл бұрын
  • Awesome video bro! Im trying out my finished protein buckets, one for the form and one to hold it up we’ll see how it goes 👍

    @alexanderizzard1254@alexanderizzard12543 жыл бұрын
    • Definitely curious to see how that works. Are you planning on leaving the buckets on? The plastic probably makes a nice looking finish right?

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
    • FixItWithJerry hey man sorry for the late reply! I made some plates first and there all done now so I’ll try this protein bucket plan now! The second bucket to hold up the dumbell wont work I don’t think(too flimsy) so im gonna stack cut 2x4s! Basically the same thing like your plywood cut out! I’ll get it on insta maybe I’ll let you know thanks again bro

      @alexanderizzard1254@alexanderizzard12543 жыл бұрын
    • Yepp totally wanna use the buckets again! 60lbs will sit at 3-2x4s so when i drop the weight down to 50s all I have to do is compensate by taking out a 2x4 then to 40s take out another.... Lmao the video will all make sense!

      @alexanderizzard1254@alexanderizzard12543 жыл бұрын
    • @@alexanderizzard1254 are you doing a video on this one, I'd like to see it!

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • I saw a similar video and they suggested using truck bed liner spray on the outside of the weights to add durability. You could also get a cheap exercise mat and cut a piece of that to go around the rim and gorilla glue it in place. It would make it somewhat like a bumper. You could also use chicken wire (or something like it) as a lattice work on the inside and pour the concrete over it to strengthen it. Just my 2 cents.

    @tidefanyankee2428@tidefanyankee24283 жыл бұрын
    • I like the rubber and bed liner idea. If you use high strength concrete you don't need any mesh or wire in the forms. The high strength concrete has fiberglass in it that makes it more crack resistant. I might make a video on pushing these to their breaking point since there seems to be a lot of skepticism over their strength.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
    • @@fixitwithjerry6161 I would be interested to see how much that "high strength" concrete with mesh or wire would add to the durability. I've watched a couple of other videos about making concrete plates and they had "drop tests" from deadlift, clean and overhead heights.

      @tidefanyankee2428@tidefanyankee24283 жыл бұрын
  • I used a filel to hex slight groves on my emt. Gives the emt tubing a little better grip.

    @elslick@elslick3 жыл бұрын
    • Nice, how much time did that take?

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
    • @@fixitwithjerry6161 about 20 minutes per. Set it up on a vice (made the vice smaller than the pipe so it would spin on top and ran the file down like a corkscrew), ran one direction at 45 and then flipped to the other side. Similar to how they add texture to old-school wooden stocks. Worked great. Gave it just the right amount of grip but not too rough on your hands.

      @elslick@elslick3 жыл бұрын
    • @@elslick That's not to bad. Worth it I'm sure. Very cool idea.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • grany gettin big strong

    @michaela2388@michaela23884 жыл бұрын
  • These dumbbells look so fine. It looks better than iron hex dumbbells.

    @TheClinchMagazine@TheClinchMagazine3 жыл бұрын
    • Thanks, I appreciate that. I think they pair nicely with an outdoor gym style setup. I'd definitely paint them though so they hold up longer.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • use rapidset mortar mixCTS, psi is incredible and its structual grade

    @tradingbenjamin410b4@tradingbenjamin410b42 жыл бұрын
  • This video is so well produced & edited. Do you think you could make these in Puerto Rico? Or would the images never appear??

    @erikajohanson8222@erikajohanson82223 жыл бұрын
    • You're funny!

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • good vid. Id recommend fast set concrete by Rapid Set instead though so you dont have to wait so long for cure time. Costs 3 times as much per bag but it sets very quick and is very strong

    @freestylmx311@freestylmx3113 жыл бұрын
    • Yes you could. I didn't mention the fast setting concrete because, if you've never done this before and you want to take your time, that stuff will set up in the bucket before you get to use it. lol.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • I'll echo the other comments here, this is one of the better DIY concrete weights videos I've seen. How there's links to home depot, a blog post, and how you aren't selling a $100 plastic mold. Thanks!

    @zachm9705@zachm97053 жыл бұрын
    • Lol, thanks Zach. I am actually about to buy one of those $100 moulds and see if I can break them.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • Would like to see a barbell tutorial too!

    @broman4998@broman49983 жыл бұрын
    • Buff dudes has a good one video that

      @heleng4528@heleng45283 жыл бұрын
  • Just a quick question is the chart in the video more accurate than the one in your blog thingy?

    @patrickhaney4015@patrickhaney40153 жыл бұрын
    • probably not. The blog gets updated, the video is a time capsule. lol

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • Great video! Thank you. I’m looking to make some 5lb & 10lb dumbbells for my wife and son. Can you possibly provide me any suggestions using your instructions and calculations for the approximate amount of cement or concrete I’ll need for 5lb & 10lb Dumbbells on each end. Thank you again.

    @dm1853@dm18533 жыл бұрын
    • I’d like to know the height for the tube cut out for a 15lbs too please!

      @jphuynh714@jphuynh7143 жыл бұрын
    • Thanks for the compliment. The reason I left off anything smaller than 20lb is because anything less and the concrete portion would be so thin (maybe 1-2" inches) that it would be brittle and probably wouldn't be enough to grip the metal handle. You could try to find a smaller diameter tube or use something, like 3 or 4" PVC drain pipe. You would need to calculate the thickness based on the inside diameter of the cylinder. For example: The formula for Volume of a Cylinder is V=πr2h. If you were using a tube that was 4" in diameter then you would use the radius of 2" and solve.V=πr2h=π·22·2≈25.13274, then you would multiply that by .087 (weight of concrete per cubic inch) so 25.13 x .087 = 2.18 lbs per side, so a 2" deep 4" tube would make a 4-5lbs dumbbell. Honestly though, you may spend as much as just buying retail steel weights for anything under 10 or 15lbs I would think. Once you get up to 30+ lbs and retail is $1-1.50 per pound it makes more sense to build them. Anyway, hope that helps. Let me know how it turns out. Thanks for watching!

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
    • @@jphuynh714 If using 8" form tubes, a 15 lb dumbbell would need to be about 1.75 inches per side. V=πr2h=π·42·1.75≈87.96459 x .087 = 7.65252 lb per side or about 15.3 lbs for the whole dumbbell. I think that a 1.75 inch thick x 8" tube will be too fragile to be practical though. Maybe try using a smaller diameter but thicker tube. For example, a 6" PVC pipe at 3" tall would be V=πr2h=π·32·3≈84.823 x .087 = 7.37934 per side or approx 14.75 lbs for the whole dumbbell. Hope that helps!

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • Wow the difference in weight on the "pro" dumbells was pretty shocking! Or we could go spend $800 on those Bowflex select tech weights, FFS... or do it the manly way at home!! With concrete! Hell yea!

    @jasonm6042@jasonm60423 жыл бұрын
    • Dummbells in CT run $1.50-$2.00 a lb used and $2.00-$2.50 avg... august till now Late Dec

      @BRUTUSPLAC@BRUTUSPLAC3 жыл бұрын
    • For real, that's the only reason I'd even consider store-bought weights. You'd think there'd be some kind of quality control. smh

      @trajectoryunown@trajectoryunown3 жыл бұрын
    • @@trajectoryunown i made 12 - 45 lb concrete plates ( 45.2-45.9 ) 1 set of 28.6 lb avg dumbs finished a 18.8 lb set . today im making #1 of 4 for a 50 lb set for a buddy. and 1- 45 lb plate to complete 2 for him

      @BRUTUSPLAC@BRUTUSPLAC3 жыл бұрын
  • Most people put nails through near the ends of the tube so it can embed into the concrete and not easily be pulled out. Are these fine or would you recommend doing that?

    @AM-nv4ol@AM-nv4ol3 жыл бұрын
    • I'm sure it wouldn't hurt anything but I haven't had any trouble with the handles pulling out. The first set I made I used for about two years before I got rid of them. I also never drop my weights all that hard.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • Hey bro how should we perfectly place the handle in the centre? If it's a lil deviated will it lead to injuries? What about weights? Its true measuring it together may give a closer weight but what if each side has a difference in weights? My one side of the dumbell is half a pound more than the other. Is it ok to use it?

    @pranoykrishna2448@pranoykrishna24483 жыл бұрын
    • Ok, I'll try and answer your questions in order. In the video I actually use a scrap piece of wood cut in an 8" square and a hole drilled in the center to help center the handle. You can also just eyeball it. Lifting any kind of weight can lead to injury. Build and lift at your own risk. You should measure each side when you cut the tubes and pour the concrete vs trying to weight them out. It's fine if the weights are a little off on each side. Chances are they are still better than store-bought weights anyway. Thanks for watching and good luck!

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
    • Thanks brother

      @pranoykrishna2448@pranoykrishna24483 жыл бұрын
  • Why do you use 3.75 as the radius instead of 4? Are you taking off .25 to compensate for the pipe?

    @mikebakerjr6802@mikebakerjr68022 жыл бұрын
    • If you look at about the 1:20 mark I explain that not all 8" tubes are actually 8". I was compensating for tubes that measure about 7.5 to the inside. The screengrab is just one example. I have a couple charts and a like to a calculator on my website. Links in the description.

      @fixitwithjerry6161@fixitwithjerry61612 жыл бұрын
  • Hi Jerry, I want to know how can I get the link for the weight conversion?

    @josequintero8146@josequintero81463 жыл бұрын
    • What kind of conversion? I made a pdf and excel file. The link is in the description.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • Question: Won't the concrete slip from the handle without a hook (like a bolt or something) that is fixed to the bar?

    @-DaMox-@-DaMox-3 жыл бұрын
    • Drill a hole in pipe and put large strong nails inside and form an X. Obv do it on both sides. Once you finish drilling it, just put it in da concrete

      @ssjwlliam4752@ssjwlliam47523 жыл бұрын
    • It certainly won't hurt to add a cross member but I don't think it's 100% necessary. It's very important that you use concrete mix with an aggregate (in short, concrete is cement plus gravel) or the high crack resistant concrete that actually has fiberglass in it. You're not the first one to ask and I guess I can see how this might be concerning to people. I think I'll make a "push it to the breaking point" video, should be fun. I grew up in the construction industry and if you have ever tried to get concrete off of steel you'd know its nearly impossible without shattering the concrete into pieces. It's something that I never even thought about, it's intuitive to me but certainly not to everyone.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
    • @@fixitwithjerry6161 just to be sure I added 2.5inch bolts and nuts on each side of the handles for dumbbells 45lbs and up and they work fine

      @SandeepSingh-we7qb@SandeepSingh-we7qb3 жыл бұрын
  • Would the handles not slide out of the concrete eventually if you dont have some kind of anchor inside?

    @codyschoenen9441@codyschoenen94413 жыл бұрын
    • I've had this question before. I've used these for several years before I sold them and upgraded to a full iron set. I never had a problem but I have seen other creators drill holes and use through bolts for added security. Nothing wrong with that if it gives you peace of mind. I have tried to get concrete off of a steel post and its not easy, Pretty much impossible without breaking the concrete into pieces.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
    • @@fixitwithjerry6161 Well thats good lol. Thanks for the info

      @codyschoenen9441@codyschoenen94413 жыл бұрын
  • In other video I saw that they put a big nail to prevent the concrete not falling from the bar. But with your way, do you think we need it or not?

    @julienbarbier7478@julienbarbier74783 жыл бұрын
    • I get this question a lot. It never occurred to me to do this. My experience comes from the construction industry and if you've ever tried to get concrete off of a steel fence post you'll know its nearly impossible without shattering the concrete into pieces. I've used these for several years and they survived multiple moves before I sold them and upgraded to a full iron set. I never had a problem but I also never drop them really hard on a bare concrete. I believe if you can't set the weight down in a controlled manner you shouldn't be picking it up. That said, I also wouldn't used anything other than the concrete mixes I specify in the video. Either way, there's nothing wrong with putting a through bolt or nail in it if it gives you peace of mind. Hope that helps, good luck with your build!

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
    • @@fixitwithjerry6161 thank you for the good reply, it will help a lot 👍

      @julienbarbier7478@julienbarbier74783 жыл бұрын
  • I’ve seen people actually put some wiring or rebar to the handle so would yours fall cause I don’t want do triceps pushed and then expect half the dumbbell slipping to my face

    @frankn2299@frankn22993 жыл бұрын
    • You could drill a hole through the handle and put a nail in it like a "T" if it makes you feel better. I don't think it's necessary at least with the type of concrete I used. There 's little to no chance of it slipping out. I had these for years before I finally sold them and bought real metal ones. I tested one that I first made and the handle didn't even loosen until I broke the concrete and it still didn't come all the way off.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
    • @Robb CoochiesIayer so are you telling me you have personally made a set using this method and had the steel "slip out" of the concrete?

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • Shoot for my second side of the dumbbell After a few hours I accidentally lifted it from the concrete. Will this stop it from working

    @monkeykonggaming@monkeykonggaming3 жыл бұрын
    • If the handle came out then yes. It's probably no good.

      @fixitwithjerry6161@fixitwithjerry61612 жыл бұрын
  • Hi FixItWithJerry I am trying to make exact weights in kg and cant really get a hold of how you calculated the spreadsheet. Would it be possible to update one for EU Fans? Also, wouldn't it also work to just weigh the concrete instead of calculating height?

    @kjell2991@kjell29913 жыл бұрын
    • What are the increments you would normally use in the EU? I can build another spreadsheet in kg and cm. I'm not sure I understand the second part of your question, do you mean weighing it wet (as you mix) and pouring in a mould?

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
    • @@fixitwithjerry6161 Thanks for the quick response. Thats exactly what I meant, I've seen other KZheadrs do that but I am unsure about the accuracy of this method as I‘ve heared some of the water evaporates (which lessens the weight in the end). I'd really appreciate a chart with kg for 20cm (diameter of the mold, close to your 8 inch). Yesterday I tried to make one for myself, but somehow I didnt get it to work for metric.

      @kjell2991@kjell29913 жыл бұрын
    • @@kjell2991 That would probably work but then how would you know how tall to cut the tubes? I also don't know the wet vs dry weight of concrete. Maybe I'm missing part of the process. I should be able to adjust the spreadsheet I have fairly easily. So, 20cm diameter and what kind of weight increments? In the US, for example, we usually jump 5 or 10 pounds for each set which is why I have 20, 25, 30, 35 lb .. etc measurements. Would you 2kg or 2.5 kg increments maybe? What is common for a commercial gym in the EU?

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
    • @@fixitwithjerry6161 it differs, but 2kg in between is the standard. With weighing, you cut the molds after you poured the cement. Makes it more complicated in that matter for sure. Only thing that will be a bit problematic in my case is that I got some heavy duty metal handles that probably weigh 2kg+. Hard to calculate that in but I could use a sanding machine to get rid of additional weight.

      @kjell2991@kjell29913 жыл бұрын
    • @@kjell2991 I see, well with the handles you would still probably be pretty close. As I show in the video, the ones I made were actually closer to true weight than the metal hex weights I bought. I'll try and put together a spreadsheet for ya. I'm sure you're not the only one that would appreciate a metric conversion.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • Can I use stones e.g I want to make 40kg dumbells,can I use 15kg cement,15kg sand and 10kg stones?

    @awemanyfit@awemanyfit2 жыл бұрын
    • If you can get the stones to set in the concrete I don't see why not.

      @fixitwithjerry6161@fixitwithjerry61612 жыл бұрын
  • Can you put steel ball bearings in there to make them heavier

    @RedYankee@RedYankee3 жыл бұрын
    • Sure, if you happen to have some steel ball bearings lying around, and weigh them out.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • 👏😎ty

    @louislu6703@louislu67032 жыл бұрын
  • If we waren't using an 8" form tube how do we "solve for the volume of a cylinder"

    @sniper_militia5476@sniper_militia54762 жыл бұрын
    • At Lowe’s they sell 8” and 12” diameter form tubes. All you do is divide the diameter by 2 and this is the radius. Look up cylinder volume calculator. Type in the number that is half of the diameter in where it says “radius “ and type in the height of what u want it to be. It will give u a number in cubic inches and that is how much space there is

      @JesusLopez-hm1em@JesusLopez-hm1em2 жыл бұрын
    • There's also a size calculation chart (Standard and metric) on my website.

      @fixitwithjerry6161@fixitwithjerry61612 жыл бұрын
  • It is okay if i use other cement?

    @inyourdream2706@inyourdream27063 жыл бұрын
    • You'll want to use something that has gravel in it, the gravel gives it strength. Not mortar or stucco mix or anything like that. Also I would stay away from the fast-setting mix because it may harden before you can smooth it out in the mould. Hope that helps.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • Rigid emt is probably better for the handles

    @ruve_9074@ruve_90743 жыл бұрын
    • Is that not the same as Galvanized EMT Conduit only threaded?

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
    • @@fixitwithjerry6161 They are both galvanized but the difference is regular emt is thinwall. Rigid has a thicker inner wall and several times stronger.

      @ruve_9074@ruve_90743 жыл бұрын
    • @@ruve_9074 good to know thanks!

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • Surprised no one in the comments section challenged his statement that too much water will make it too weak.

    @milwaukeetweed4843@milwaukeetweed48433 жыл бұрын
    • Quickrete says, quote, " ...it is important to know that the more water that is added to the mix the weaker it becomes. Adding 1 extra quart of water per 80lb bag can reduce the strength of the concrete by 40%..." I am glad that you pointed it out because I'm sure you're not the only one that has asked the question. I'll gladly address it. It is well documented in the construction industry that an overly wet mixture throws off the chemistry of the concrete curing process. In fact, there are several tests that must be accomplished on-site when it comes to the structural curing of concrete. The manufacturers of these concrete mixtures specify a minimum and maximin amount of water to be added to the mixture. For something like a crude concrete dumbbell it probably isn't enough difference to even mention however, if you're pouring a slab or building a 40 story high rise this is actually a very important variable.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • You must put "anchors" into the metal bar. See this example kzhead.info/sun/Z75-g5SSgp-bpmg/bejne.html. Without the "anchors" with repeated use, your concrete weights can come loose and fall off the barbell handle! This could cause damage and even worse potentially hurt someone, especially with larger weights. Great video, but please remind your viewers to anchor the handles. Also, remember to wear a mask and goggles when working with these materials.

    @scotthowardmedia@scotthowardmedia2 жыл бұрын
    • I've received enough feedback with the same general message to make another "mythbusters" style video to showcase what exactly does it take to break concrete away from a metal insert such as this. Stay tuned!

      @fixitwithjerry6161@fixitwithjerry61612 жыл бұрын
  • The diameters are different because they ship the tubes in one another.

    @Number704@Number7043 жыл бұрын
    • Makes sense. I point it out because it will screw up your calculations for weight. As long as you know which one you're using you can compensate.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • Is the discrepancy in the form tube diameter because one measures with the width of the material and one without? That seems dumb as hell

    @alexshi9320@alexshi93203 жыл бұрын
    • I'm not sure why they are this way. I'm guessing maybe it makes it easier for the manufacturer to ship them and for construction purposes a 1/4 inch isn't going to make much of a difference. I really don't know why this is though.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • Give sodium silicate a try.

    @thomasolson7447@thomasolson74473 жыл бұрын
    • Taking it up a notch! lol. It decreases setting time and increases hardness right?

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
    • @@fixitwithjerry6161 people say it densifies it. Maybe less volume, same mass? It's cheap and it looks easy to make. I suppose you can just buy 100% lye from any store in US or Home Hardware for Canadians.

      @thomasolson7447@thomasolson74473 жыл бұрын
  • how many kilograms are

    @kristianmartialsurvivalper8522@kristianmartialsurvivalper85223 жыл бұрын
    • If you head to my website you will find a metric conversion chart for these. Link in the description.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • The audios pretty quiet, good video though!

    @travispace6658@travispace66583 жыл бұрын
    • Thanks for the feedback. I'll try to work on that in my next video.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
  • Como sacar 70,80, 90 y 100 lbs mi hermano

    @jairomartinez3025@jairomartinez30258 ай бұрын
    • La razón por la que no hice mancuernas más grandes es porque su tamaño físico es demasiado grande para ser práctico. Puede utilizar el cuadro vinculado en mi sitio para aumentar el peso. Ganará aproximadamente 5 libras por cada 0,75 pulgadas de aumento de altura del tubo. Espero que ayude.

      @fixitwithjerry6161@fixitwithjerry61618 ай бұрын
    • @@fixitwithjerry6161 en realidad si me ayudará porque nesecitabamos aumentar el peso y con este es suficiente para hacerlas, gracias por contestar inmediatamente ya no todos lo hacen, y ser tan específico la mayoría de los tutoriales no dan medidas, ni enseñan pesos que permitan seguir creciendo y tener un buen físico quede salud gracias 🤗🤗🤗🤗🤗

      @jairomartinez3025@jairomartinez30258 ай бұрын
  • Jesus loves you

    @Matthew34801@Matthew348013 жыл бұрын
  • They chip and break.!!

    @dzmalekvali1110@dzmalekvali11103 жыл бұрын
    • I used mine for 3 years, never chipped or broke a single one. I had sets from 30 up to 65 lbs. I never dropped them on concrete or any hard surface without gym mats, most people don't drop steel weights on concrete without at least 1/2" rubber mat protection. I would like to know more details and specifics on how exactly you built yours. Let's identify the deficiencies in your build that caused them to fail. It will help everyone make a better finished product.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
    • @@fixitwithjerry6161 tyre filled with concrete

      @dzmalekvali1110@dzmalekvali11103 жыл бұрын
  • WHAT ?

    @harrynut3044@harrynut30443 жыл бұрын
  • Bro you have full gym equipment and you stick with concrete

    @najiabdurahman7715@najiabdurahman77153 жыл бұрын
    • Lol, I used these before I got the full gym. I finished the video and then sold them since I have a full set of real dumbells now. It took me years to find a good deal on used iron weights and we've seen shortages with the virus and gyms shutting down.

      @fixitwithjerry6161@fixitwithjerry61613 жыл бұрын
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