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3-4-5 Triangle Method For Finding Square 

Training Hands Academy
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Today you will learn the 3-4-5 triangle method for an effective way to find square. The 3-4-5 triangle method works great for small projects, and it works great for large projects such as flooring, home construction, and landscaping/gardening.
Finding square with diagonals video: • Every New Woodworker N...
0:00 Intro
0:30 What is the 3-4-5 method?
1:57 Method #1 - Finding square
4:03 Method #2 - Laying out 90 degree lines
5:28 Outro
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My name is Josh Fedorka, and I’m the founder of Training Hands Academy™. I have been a carpenter and woodworker for over 25 years. I have also held certifications in home energy auditing and have built several LEED certified homes in New England.
God has gifted me with many “hands on” skills and it is my calling and purpose to share those skills by teaching others. Whether it is to seek a career in carpentry, become a general contractor or improve one’s DIY skills and knowledge, the motivation behind THA is to help others successfully learn how to work with their hands.
#diy #345trianglemethod #constructionlayout

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5 июл 2024

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Комментарии : 111   
@TrainingHandsAcademy
@TrainingHandsAcademy 3 года назад
Notes: Sometimes the string can introduce some errors because of its flexibility. Therefore, it's always a good idea to recheck the 3-4-5 after your lines are snapped. In addition to multiplying the ratio, you can also divide the numbers to get even smaller numbers.
@voidisyinyangvoidisyinyang885
@voidisyinyangvoidisyinyang885 23 часа назад
How come the 2nd time your starting point is the same point but the first time your starting point is the outer edge on each side that is different length (4 and 3)? Doesn't that introduce an error in the diagonal?
@SlimSavageBlanco
@SlimSavageBlanco 2 месяца назад
Representing the homeland, Tennessee! Good to see my Tennessee neighbors out here putting in work.
@danielsheridan3936
@danielsheridan3936 2 года назад
Use this all the time in laying out slabs and footings, wall placement, ensuring square openings. Countless uses for this method. Thank you Pythagorus
@realthoughts6952
@realthoughts6952 Год назад
I love to these videos they are fast and to the point. You can always pause or rewind if necessary.
@nasaretasmith9772
@nasaretasmith9772 3 года назад
Your explanation is easy to follow n understand. Thank you.
@teanathomas1820
@teanathomas1820 Год назад
I tried watching a few different videos, but your videos I understood! Thank you.
@TrainingHandsAcademy
@TrainingHandsAcademy Год назад
Thank you for watching!
@eltoncarvalho9339
@eltoncarvalho9339 2 года назад
I can believe I learned that today. Thank you
@GenioCinelli
@GenioCinelli 7 месяцев назад
Thank you! Been looking for a straightforward explanation and you are it. Appreciate you taking the time. Helped me out-be well...
@TrainingHandsAcademy
@TrainingHandsAcademy 7 месяцев назад
Thank you for taking the time to comment! If you want to support my work, please drop some more comments on my other videos! This helps to wake up the YT algorithms. :)
@shaun_rambaran
@shaun_rambaran 3 года назад
I loved this tip! Thank you!
@TrainingHandsAcademy
@TrainingHandsAcademy 3 года назад
Glad it was helpful Shaun!
@patrickfiles6080
@patrickfiles6080 2 года назад
Excellent lesson!
@forbeginnersandbeyond6089
@forbeginnersandbeyond6089 3 года назад
Thanks a lot! Didn't realize so easy a method.
@TrainingHandsAcademy
@TrainingHandsAcademy 3 года назад
I know right, and you can use it in so many different places.
@Anthony-nw7xp
@Anthony-nw7xp 7 месяцев назад
Best explanation I've heard so far
@davidggonzalez7726
@davidggonzalez7726 3 года назад
Hi, thank you for the video very informative and right to the point. Question: I’m new to woodworking and I was wondering what is the best way to make plywood residuals square, always worry about the factory edge and when I loose track of it I don’t know what to do. Thanks you!
@francisjohn7699
@francisjohn7699 2 года назад
Thank you alot for a good lesson
@georgeomalley6066
@georgeomalley6066 2 года назад
Love the tips
@David.M.
@David.M. 3 года назад
Thanks Josh!
@grahammyers6475
@grahammyers6475 2 года назад
Best explanation I’ve seen 👌👌understand it fully now ,cheers buddy
@TrainingHandsAcademy
@TrainingHandsAcademy 2 года назад
Great to hear!
@viracocha03
@viracocha03 Год назад
Awesome. Thanks. Just made a bench top and need to put straight and square dog holes.
@charlesviner1565
@charlesviner1565 3 года назад
Thanks for the video
@MrJcasilva
@MrJcasilva 3 года назад
Show de bola! Greetings from Brazil!
@TrainingHandsAcademy
@TrainingHandsAcademy 3 года назад
Thank you! Cheers!
@akuilaneibavu6839
@akuilaneibavu6839 3 года назад
Thank you so much for sharing your knowledge bro
@TrainingHandsAcademy
@TrainingHandsAcademy 3 года назад
My pleasure
@badmfgreenoorlegraygrass6726
@badmfgreenoorlegraygrass6726 2 года назад
Thanks I like how you show the numbers close up now I get it
@TrainingHandsAcademy
@TrainingHandsAcademy 2 года назад
Glad to help
@eltoncarvalho9339
@eltoncarvalho9339 2 года назад
I believe you are the best channel in America .
@TrainingHandsAcademy
@TrainingHandsAcademy 2 года назад
That is very kind of you to say Elton!
@adrianhernandez2972
@adrianhernandez2972 Год назад
Thank you for your video is very simple and will be help me so much
@TrainingHandsAcademy
@TrainingHandsAcademy Год назад
Glad it helped
@porfiriosalgado3925
@porfiriosalgado3925 6 месяцев назад
Very good information about square tank you
@TEX-704
@TEX-704 2 года назад
As a flooring contractor, this is a method I live by every time I do lay out
@aungmyat7242
@aungmyat7242 Год назад
Thank You Very Much.
@TrainingHandsAcademy
@TrainingHandsAcademy Год назад
You are very welcome. :)
@rezakazemi6424
@rezakazemi6424 2 года назад
well done great
@nathanlehoux9498
@nathanlehoux9498 3 года назад
Genius!!
@TOMTOM-nh3nl
@TOMTOM-nh3nl 3 года назад
Thank You
@SRBmilan
@SRBmilan 3 года назад
I can not imagine, that somebody dislikes this video! Many thanks, Josh, you keep it simple and understandable. I get it as an amateur.
@TrainingHandsAcademy
@TrainingHandsAcademy 3 года назад
I appreciate that Milan!
@H.G.Wells-ishWells-ish
@H.G.Wells-ishWells-ish 15 дней назад
Adorable apprentice there, bud. Wish mine were that cute. 😂
@jackstephan5851
@jackstephan5851 Год назад
Thanks! I've watched a couple of your video's, all are excellent. You are the first person that I felt I got enough out of it to donate
@TrainingHandsAcademy
@TrainingHandsAcademy Год назад
Awe, thank you so much Jack! I really appreciate your generosity.
@dominicmoore8461
@dominicmoore8461 2 года назад
awesome video
@charlespearce3136
@charlespearce3136 3 года назад
Very useful
@jacksonnjuguna2698
@jacksonnjuguna2698 9 месяцев назад
Very educative
@TrainingHandsAcademy
@TrainingHandsAcademy 9 месяцев назад
Awesome! Thank you for the comment.
@Tommy_007
@Tommy_007 2 года назад
Mathematician here. Nice mathematical video :-) It's actually not the Pythagorean Theorem that is used in the 3-4-5 method. (I don't think the video claims this, but some comments do.) Instead, it is the converse of the Pythagorean Theorem, which says: IF the sides (a, b, c) of a triangle satisfy the equation a^2+b^2=c^2, THEN the angle opposite side c is a right angle. In the 3-4-5 method, this is used for a=3, b=4, c=5. For the same reason, there is also a 5-12-13 method. (And infinitely many other similar methods that are not just scaled versions of these to methods.) Another funny thing I have noticed: Almost all woodworkers on RU-vid say "square" when they mean right angle (when two lines are perpendicular/orthogonal) :-)
@TrainingHandsAcademy
@TrainingHandsAcademy 2 года назад
:)
@robertbenavides3899
@robertbenavides3899 3 года назад
Shout Out From South Texas :) #New Sub :)
@TrainingHandsAcademy
@TrainingHandsAcademy 3 года назад
Welcome Robert!!
@arth.4196
@arth.4196 3 года назад
I also say, thanks 😊🤙👍👈
@TrainingHandsAcademy
@TrainingHandsAcademy 3 года назад
No problem 👍
@SlimSavageBlanco
@SlimSavageBlanco 2 месяца назад
Guys just start out with a any number that is a multiple of 3. Then however many times 3 goes into that number, multiply 4 and 5 by that same number. At the end, the measurement between the 3 side and the 4 side should equal 5 times whatever the number was you used to multiply with. If you start with 3x4=12. Then multiply the 4 and 5 by 4 also. 16 and then you would get 20 between the first two. It's really really simple if you know the multiplication table.
@bruceakina3110
@bruceakina3110 Год назад
Thank you now I know the 345 method
@TrainingHandsAcademy
@TrainingHandsAcademy Год назад
Happy to help
@JustinDOehlke
@JustinDOehlke 2 года назад
The floor layout is snazzy
@CSCINF
@CSCINF Год назад
Subscribed
@TrainingHandsAcademy
@TrainingHandsAcademy Год назад
Thanks!
@insanesales525
@insanesales525 Год назад
very cool. it got me thinkning.. situations that are square but not 3-4-5 or a simple multiple like 6-8-10, Is it true that every square 3 sided measurement is a derivative or multiple of 3-4-5? Kind of like if a truw box is really square, divided by itself is 1. So every truly square triangle measurement would have to be equally proportionate to 3-4-5...? never thought this deep before lol
@TrainingHandsAcademy
@TrainingHandsAcademy Год назад
I would say yes, that is true.
@garykorzelius5930
@garykorzelius5930 3 года назад
Very nice. I have a question what if I’m working on a frame 48x24 inches, using 3-4-5 what distance do I use? 3 4 and 5 inches are too small, and 3 4 and 5 feet is too large, so guide me please.
@TrainingHandsAcademy
@TrainingHandsAcademy 3 года назад
Fantastic question Gary! Just as you can multiply to make the ratio bigger, you can divide to make it smaller. So for your project one option would be to divide the 3'-4'-5' by 2 to get 1.5'-2'-2.5'. Cool right?!
@emirkanaa
@emirkanaa 3 года назад
Metric!
@Tommy_007
@Tommy_007 2 года назад
If you prefer integers that are as large as possible (and still inches), then you can multiply by an integer n so that 3*n is at most 24, and 4*n is at most 48, i.e., you multiply by n=8: 3 becomes 3*8=24, 4 becomes 4*8=32, 5 becomes 5*8=40. Therefore, you now have a 24-32-40 method.
@richardslater677
@richardslater677 Год назад
It’s a ratio. It doesn’t matter what the measurements are as long as they are 3-4-5. You could use 24 on the short side, 32 on the second side and 40 on the hypotenuse. 24-32-40 is the same as 3-4-5. Better still, forget it altogether and just measure the diagonals.
@zokmokus5211
@zokmokus5211 3 года назад
Flexible use of the Pythagorean Theorem
@davidggonzalez7726
@davidggonzalez7726 3 года назад
I’ve figured, thank you
@seanlynch122
@seanlynch122 3 года назад
Bad ass
@EscobarStyle
@EscobarStyle 3 года назад
What’s the chalk line cord all about? What’s its purpose and why did you “snap it” ... thanks Josh ✌🏼
@TrainingHandsAcademy
@TrainingHandsAcademy 3 года назад
Hey man! Chalk lines are used mostly in carpentry/construction and work great for laying out lines for house walls, flooring, roofing, and cutting plywood just to name a few. Great tool.
@EscobarStyle
@EscobarStyle 3 года назад
@@TrainingHandsAcademy ahhh I see! I saw one of my buddies use this the other day on a long slab but I was lost. Good to know! Thanks buddy
@TEX-704
@TEX-704 2 года назад
We use a chalk like to transfer a line to a concrete slab, sub floor or any other type of substrate in order to follow. We use this line to keep all the material straight and square, it is very important to follow. If you don’t follow your line correctly, you can have a huge mess on your hands and its a nightmare to fix if you don’t "catch it" right away.
@bobbyjackson1194
@bobbyjackson1194 Год назад
Cool math tricks - interestingly, while the 3-4-5 Triangle method clearly speaks to Pythagorean mathematics, the diagonal method also lends a concept from another famous mathematician - Ptolemy (as in, Ptolemy's theorem: en.wikipedia.org/wiki/Ptolemy's_theorem)
@jyothikirankranth1239
@jyothikirankranth1239 Год назад
I need diagonal for 21/40 dimension metal building
@rossvanhorn1826
@rossvanhorn1826 3 года назад
This is like a math class.
@anthonyvincent9990
@anthonyvincent9990 Месяц назад
curious what if you were trying to build a 20 x30 building and your trying to make sure your floor joist are square?
@TrainingHandsAcademy
@TrainingHandsAcademy Месяц назад
Yes this work for that... just upscale the numbers like in the video's examples.
@paulflores4331
@paulflores4331 10 месяцев назад
So is run always 3 ft and rise at 4ft??? Or can we do vise vers??? Run being 4 and rise 3 ft?????
@TrainingHandsAcademy
@TrainingHandsAcademy 10 месяцев назад
Yes, you can switch it up.
@MrAshred86
@MrAshred86 4 месяца назад
Can you just divide the 5 by 2 to get a 45 degree projection?
@williamsamukunza8321
@williamsamukunza8321 Год назад
I want to learn how lay a floor plan using a string of a building plan
@leoawag8515
@leoawag8515 3 года назад
How about big building lay out for square one.
@TrainingHandsAcademy
@TrainingHandsAcademy 3 года назад
Yes, this works for that too.
@leoawag8515
@leoawag8515 3 года назад
@@TrainingHandsAcademy Thank you ang can you make demo for that too? God bless .
@atmm89
@atmm89 Год назад
does it work in metric???
@TrainingHandsAcademy
@TrainingHandsAcademy Год назад
Yes, any unit of measurement
@SlimSavageBlanco
@SlimSavageBlanco 2 месяца назад
Don't worry about unit of measure. It can be something you invent. What matters is the 3,4,5 all being multiplied by the same number each time. It's much easier to understand with the short simple explanation. The longer it takes to explain this the more confusing it will get.
@atmm89
@atmm89 2 месяца назад
@@TrainingHandsAcademy thank you for the great answer, makes sense
@jasonvegas3593
@jasonvegas3593 8 месяцев назад
I see the concept here, but couldn't you just use the speed square to check the angle?
@TrainingHandsAcademy
@TrainingHandsAcademy 8 месяцев назад
You can but the speed square is too small to get accurate readings on larger projects.
@terrywheelock9458
@terrywheelock9458 3 года назад
Yes, but will it work for a "LEFT" triangle! 👀😆😜😁🤣👍
@TrainingHandsAcademy
@TrainingHandsAcademy 3 года назад
😂
@Nitecrow314
@Nitecrow314 3 года назад
Unfortunately not. Or I could say yes- it will work for communists!
@terrywheelock9458
@terrywheelock9458 3 года назад
@@Nitecrow314 You juz had to go there! 🤣
@georgehughes1568
@georgehughes1568 10 месяцев назад
.25 speed is best for this
@busty1372
@busty1372 4 месяца назад
Pythagorean theory
@robertnembhard3621
@robertnembhard3621 11 месяцев назад
Am not getting 5'
@TrainingHandsAcademy
@TrainingHandsAcademy 11 месяцев назад
Then you are out of square
@SlimSavageBlanco
@SlimSavageBlanco 2 месяца назад
You don't have to go 3',4',5'. Use multiples of 3 if that works better. Say you use 12. 3x4=12. Now multiply 4 x 4 up the other side. That's 16". Now if you measure between them you should get 20 because 5x4=20. I just used 12, which is 3x4. Then I multiplied the next two numbers also by 4. You can do it however works best for the project. Just start with any number that is a multiple of 3.
@danmann7019
@danmann7019 2 года назад
Let's see if someone could actually do it.Not a carpenter .
@TrainingHandsAcademy
@TrainingHandsAcademy 2 года назад
Do what?
@WaiYan-gi8ll
@WaiYan-gi8ll Год назад
respect for share your educate
@TrainingHandsAcademy
@TrainingHandsAcademy Год назад
Thanks for commenting!
@JimmyWestra
@JimmyWestra Год назад
I did a diagonal using a single taunt string off each corner of the 36' apart stakes...stake one at (0) stake 2 at (36) 36Ft x 40Ft=54'2.75" Diag. corner to corner if memory serves me ... maybe not but ultimately when my numbers met diagonally my sides were 36 left side @ (40ft) and 38ft 6" right side @(40 ft) three times kept coming out using a 54ft 2" (same string tied off)...which corner is out is the need to know using a single string 54ft 2.75" off stake 1 @ 0 and stake 2 @36Ft? How is the parallels off ???
@user-bt8mh1it2h
@user-bt8mh1it2h День назад
Your frame Is not a square,its a rectangle 😂😂
@ivylifewithabullterrier4286
Got it coach!! 🫡 Very helpful thank you
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