Find the Center of a Circle (3 EASY and QUICK Ways)

Рет қаралды 1,218,498

Күн бұрын

What's better than the center of a circle? A spare car key without leaving home! I started Tom's Key Company (tomskey.com/?Tomah...) so you can get quick and affordable DIY spare car keys and fobs shipped to your front door.
See my favorite 3 ways to find the center of the circle. This is based on testing a dozen ways to find the center of a circle. (test video being published soon). These were all suggestions in comments from my original center of circle video: ( • How to Find the Center... ).
These three methods are all quite easy and quick. Check them out.
If you need supplies find them on:
Amazon USA: amzn.to/2vA9hmv
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Donations appreciated via Paypal or Venmo.
Music by Dídac Corbí: "Only You"
#234

Пікірлер: 747

@cynthiahicks1909 2 жыл бұрын

I would just trace around a piece of paper and then fold it twice.

@YcartOniuqa 4 ай бұрын

Real quick!😂

@plsbanhackers9031 23 күн бұрын

This is the real answer right here 😂

@mikeg6064 4 жыл бұрын

These demonstrations are excellent! You made them so easy to follow and understand. Thanks for your effort and for sharing them. I really appreciate it.

@Brian-hx9wy 2 жыл бұрын

How I love KZfaq for this very reason! Just doing some DIY projects and this helped tremendously. I’d like to vote for the second example lol seems easiest with less work and fastest. Great video 👍👍👍👍

@carmengarciacarmengarcia828 2 жыл бұрын

Lwssññsñqñs

@bleeke69 5 жыл бұрын

I like the second. I never took geometry so my mind is blown on 2. Extremely useful, all i need to do is remember it in the future. Thank you.

@monadamus42 6 жыл бұрын

Pop through time-space into space-time, realize you are the circle, you are the center. Come back, share what you learned, get crucified. Take a nap, etc. Great video, very helpful and I love that you tried all the suggestions from the audience. A golden age of entertainment and education we live in.

@samsungtv4u 6 жыл бұрын

Dude thats .... deep...... :) are you weaving hemp baskets all day long ??how do you even come up with this.. :)

@samsungtv4u 6 жыл бұрын

Technically if you are the center of the universe and you place the circle exactly between your axes and a mirror draw a line across then rotate the circle at it axis 137.5 degrees in accordance to the fibonacci sequence then draw one more line you will have the center of the circle ....

@SkengManNZ 5 жыл бұрын

Clown

@thomask4836 4 жыл бұрын

I just came back to review your video. I cannot thank you enough! I really like the second chord method!

@Goalsplus 10 күн бұрын

Your practical demonstration is much better than a drawing.

@justaredpenguin784 5 жыл бұрын

here's a very simple solution: draw a straight line between any two points on the circle, find the line's center point and draw a line (again, from edge to edge) through that midpoint that is perpendicular to the original line. The new line is a diameter and its midpoint is the center of the circle.

@joaovianna7321 5 жыл бұрын

Wow, that is really easy and precise.

@mr2octavio 4 жыл бұрын

@@joaovianna7321 thanks algebra

@zioxei 3 жыл бұрын

@Lance Bermudez No, this one involves drawing only two lines

@joeywatch1145 3 жыл бұрын

@@zioxei His third chord in the video is superfluous. It only requires two. The third is a control to help mitigate stacking inaccuracies.

@jesuspineirosanchez7814 2 жыл бұрын

@@joeywatch1145 What you call the third line is actually the sixth line drawn. Lifulo is right

@shakuntalawagh5802 5 жыл бұрын

All the 3 ways are best . I liked the 2nd way the most. Thank u so much.

@ehvway 5 жыл бұрын

I always used the third method. Now I will use the 1st and especially the second method! Thanks for sharing Sir!

@rouxso5124 5 жыл бұрын

very informative and very easy instructions good video, i now have this in my memory bank Thanks

@xBris 4 жыл бұрын

Person suggesting the third method comments "MUCH easier" - method takes by far the longest. Great. Thanks for the upper case MUCH.

@alaskamike3577 4 жыл бұрын

Wonderful tutorial. Great editing and video work. Now I know how to do this. Much Thanks.

@michaelheath76901 4 жыл бұрын

I'm in the middle of a project, and this is a problem I'm facing soon. The 3 solutions you shared make sense, and doing this no longer seems so daunting. Thanks for your help.

@kathys8899 Жыл бұрын

Thanks for explaining and showing this with the paper or saying anything with a 90 degree angle. It sounds simple, but it seems like we forget all about angles of items and such when we need to remember. You explain things well and that means a lot coming from a special ed teacher.

@TomahawkDIY Жыл бұрын

You're very welcome! Happy to hear that

@hansdegroot8549 5 жыл бұрын

I like the second method the best. Thanks for sharing.

@jackjax532 5 жыл бұрын

You are a very kind person my friend. Thanks for the video.

@jimclark6256 2 жыл бұрын

The 3rd method is the quickest and easiest, it's the one I always use. I'm not trying to impress anyone with needless geometry skills. Great infom on all 3.

@alli9133 4 жыл бұрын

Awesome thanks! Now I can get back to my project. Number three is perfectly simple!

@seanheller3716 9 күн бұрын

Example 2 is just what I need to re-find the center of my 20 foot round pool pad so I can do the final leveling. Thank you.

@y2ksw1 5 жыл бұрын

The best way I know is to use a special square which touches right the extents of the circle. The square has another staff at exactly 45 degrees, and you mark on it a short line close to the center and turn the circle a bit and repeat. I believe this method was found by Euclid ages ago.

@thetessellater9163 5 жыл бұрын

Yes, we made an engineers variant in school metalwork, c. 1972, UK. Using 4 or 5 mm mild steel or brass sheet, make a three-quarter pie shape, with dead square cut out quarter, fix another (long, triangular is neatest) piece to it bisecting the 90 degrees, obviously at 45. We did this by 'secret rivetting' - the thing we were being assessed on. (Thank you Mr Payne). You can use this to find the centre of a cylinder end or round bar too. Good ideas here and useful if accuracy isn't paramount! And yeah, get millimetres - but then you'll spell it wrongly!

@rifleman1873 4 ай бұрын

My preferred method also. Any carpenter or woodworker has two squares, on of them with a 45. Just overlay the 2 squares and you have the tool to use the method you describe.

@Tiny_Island_Designs 3 жыл бұрын

The 3rd one works best for my project because I have 5 circles to find the center of. Thank you!

@willamboarman8605 5 жыл бұрын

Great ideas! Should have thought of that myself! Dauh!😉

@outdoorzone 6 жыл бұрын

Awesome technique! Paper template seems easiest of the 3! Thx

@robertemmons2260 4 жыл бұрын

The cord method is best for many contractors as that they will most likely have a Swanson speed square in their toolbelt. Although I myself am not a contractor, this is the method that I use for my DIY projects that require a center point in a round object, such as wood, metal, plastic, or even foamboard.

@thomask4836 5 жыл бұрын

Excellent video. Thank You Sir!

@lyteyearz5810 4 жыл бұрын

Perfect! Thank you and everyone else so much!

@Reloadeez 2 жыл бұрын

Take sheet of paper that's shorter then the circles diameter, fold the paper perfectly in half and crease it good. Now unfold the paper and set it so both bottom corners exactly touch the outside of the circle, mark a little dot on the circle at the end of the crease toward the outside edge of the circle, do the same on the other end towards the center. Line those two dots up with a ruler and draw a line. Turn the circle 120 degrees or so, doesn't have to be perfect, and repeat the dots and line again with the creased paper, where those two lines intersect is the exact dead on balls center.

@donnyh3497 4 жыл бұрын

Thanks for the video! I love to see and compare clever ideas

@DesignsByGaddis 3 жыл бұрын

Thank you so much! I think I will be using the paper folding method. Been trying to figure this out for a while!

@mr.shannon6137 5 жыл бұрын

Built log homes 10+ years. Use torpedo and draw verticle down side 4,5, or 6 inches whatever works as long as it easily divides in two. Mark center of that line and use level to draw horizontal line threw it. Measure it and mark at halfway. Use level to draw verticle center line. You have center of log, and the needed vertical and horizontal center point of log. This is for anti-symmetrical handcrafted logs, turned logs are much easier.

@ardemus 6 жыл бұрын

Nestle the circle into your framing square. Mark the two contact points on the circle and square. Rotate the square so the marks line up but the angle of the square is inside the circle. The sides of the square are radii and they meet at the center of the circle. You can use the measurements on the square instead of marking anything if you prefer. Just line up the measurements on the square with the edge of the circle for the same result.

@Mavrik9000 6 ай бұрын

Instructions unclear. What does "Rotate the square so the marks line up but the angle of the square is inside the circle" mean? Do you mean flip the square?

@CmdrMic 6 жыл бұрын

Thanks so much. All are great, but 3rd Method has me laughing at its simple but brilliant cleverness! Kind Regards.

@c.brannan1782 3 жыл бұрын

I used the first one and it worked perfect for me. Thanks for the video

@firdausravindar977 7 ай бұрын

Thanks bro for sharing this valuable knowledge on KZfaq.😊😊😊

@jaimevalencia5548 3 жыл бұрын

You made my day man! Many, many thanks.

@robertemerick6798 3 жыл бұрын

I measure from a outside point of the circle and find the largest measurement to find the diameter. Mark it then repeat in a different spot. Where they intersect is the center. You can do three to check your center.

@sharit7970 Жыл бұрын

I like this method!! Thanks for sharing!!

@TripReviews 19 күн бұрын

I was taught to use a compass set at the radius and draw two arcs in the centre and where they cross you’ll find the centre. Something like that, it’s been over 50 years since I was taught this in geometry class.

@NehaSingh-nd9sj 6 жыл бұрын

awesome way for finding centre. well done...

@ms22401gal 4 жыл бұрын

Just what I needed. Thanks, man.

@mrueid 3 жыл бұрын

2nd method... you saved my day !!! Thank you BOSS

@davenrenzfernandez3944 6 жыл бұрын

thank you men, your video helped me a lot.

@daryllect6659 6 ай бұрын

Very cool! Thanks!

@jdog4534 3 жыл бұрын

I like the second way. It can be done with the straight edge of a piece of paper, cut to length of chord and fold in half for center and use 90° corner or strike arcs from points that are equal distance from both sides of center that are longer than that distance, strike them over centerline. Where they intersect will connect to centerline perpendicular to chord. If you have the space, strike arcs from each end of chord that are longer than half the length of chord. Strike them on both sides of chord. Connect the two points of intersection, through the chord. That line segment will be perpendicular to chord AND divide it in half. Maybe a combination of methods 2 and 3 where you lay it out and make a template, but using more geometry and less origami.. Lol great tricks. All three have their merit.

@strikerj4810 5 ай бұрын

1st way was definitely easier

@athenasword1 4 жыл бұрын

Looking at a glance, square in the circle is my type thanks. Live and learn.

@erichighberger6553 4 жыл бұрын

Hey - thanks for your video - I'll use the last method now!

@ActiveAtom 5 жыл бұрын

Thank you, the third one is the fastest for me, out on the job and it is easy to carry the common sizes with me in 1/4 increments or something like that.

@kmcg101 3 жыл бұрын

I recently had to find the center of about 20 wood circles. I had cut a 2" dowel into 20 segments and wanted to drill a hole in the center of each. In Photoshop I created a 2 inch circle with 2 90 degree radii (crosshair) and printed it out. I cut out the circle, placed it over the dowel, held it up to a light to make sure it was centered, and poked through the crosshair into the dowel with an awl.

@knoxscoop 2 жыл бұрын

Perfect. I'm getting ready to make spinning tops. I don't want them to wobble. The paper template idea is perfect.

@TomahawkDIY 2 жыл бұрын

Have fun!

@jennifereverett6298 4 жыл бұрын

Using your ideas, I moved a ruler up and down near the center line to find the widest point, took that measurement, and drew a line. I then did another cross line of the same length. The intersection was the center.

@hankpostma5856 5 жыл бұрын

Take a tape measure , put it on the edge, sweep it across the circle, find the diameter . Once you do stop and mark radius . Your done !

@kiliankiel3844 3 жыл бұрын

nice work - thanks for sharing!

@thehomelesstrucky 2 жыл бұрын

Cutting holes in the ends of a water drum to make a tumbling composter, this helped a lot, thanks, probably use the second method.

@TomahawkDIY 2 жыл бұрын

Glad it helped!

@glitterkitty1979 2 жыл бұрын

These are great. The template method is my fave

@theguywitheyebrows 2 жыл бұрын

the center of three lines trick is great!! thanks!!

@ecaff9515 5 жыл бұрын

Excellent video and a great process

@palmeto1130 6 жыл бұрын

Wedge the circle in the square, combine a framing square 45 on the inside and draw a line through the center . Rotate the circle and draw another.

@redgeminiarts3674 3 жыл бұрын

Thank you for sharing. They were all useful.

@duc626 Жыл бұрын

#3 was by far not an “easier way”😂 great video👍👍

@dennisdownes9319 5 жыл бұрын

I just used the fold method for a large lazy susan build........It worked out great ...thanks!!!

@georgettesledge6079 5 жыл бұрын

Thanks ,you where so helpful for mr me, Never to late to learn you just showed me that I thankyou

@Moonshinedave1 3 жыл бұрын

Thanks for the video. Of the three, I believe the first was my favorite, however if not having marks on your project is a factor, then the last would be the one.

@davidsirmons 5 жыл бұрын

I figured out two ways to do this just now by thinking about it. Use a compass, open it to what appears to be a decent amount wider than what the center of a circle would be, set 1 compass point at the outer perimeter of the circle, they carefully draw an arc. Do that at 2 more points afterward. They look for the co-created convex shapes created, draw a line joining them, and you have center. Another way is to box the circle in with a framing square. Go in a linear perimeter by drawing upper right, then upper left, then lower left, then lower right (or whichever direction you wish so long as you keep right angles). Then simply connect the 4 box corners.

@jorgematheus4845 4 жыл бұрын

Saludos, excelente explicación. Me ha sido muy útil tu video!... Un abrazo desde Venezuela

@swordoff7 2 жыл бұрын

Jorge Matheus, Si, la explicacion es sencilla. Espero que esta bien y con buena salud en Venezuela. Saludos de California.

@kumd 5 жыл бұрын

Number 3 is the best! Thanks

@gavinmaloney6773 Жыл бұрын

Genius 🤩 Thanks for sharing. As well as to the smart contributors 🏆

@TomahawkDIY Жыл бұрын

Happy to help!

@capgigante5426 6 жыл бұрын

thank you, thank you. It helped me a lot.

@sonnynguyen8012 4 жыл бұрын

What a useful video. Thank you 👍

@SuperAjej 6 жыл бұрын

Thanks man , good vid

@bobjimenez4464 5 жыл бұрын

the Chord method is nice...I learned something new today, Thanks!!!

@gillianbc 3 ай бұрын

Really good tips, but even more accurate if you use a sharp pencil rather than a marker pen

@COLLECTORSCORNER1979ANT 2 жыл бұрын

I prefer the last method. So simple and less buggering about with pens & markers etc. Especially if you don't want to be actually marking the item you are trying to find the centre on. At least with the 3rd method you have a template to overlay onto your circle. I myself would just use commonsense and measure widest point of the circle both ways and when those lines cross you have your center. Simple as that. Some methods are just way to over the top and over complicated for my liking. WHAT'S THAT ABOUT. Lol.

@alanyoung6747 6 ай бұрын

My circle is less then two inches and it has to be right on the money. Paper template is the way to go! Thanks for the easy method!!

@mozimzim 3 жыл бұрын

Great video! I needed it!!

@emtffzartman666 2 жыл бұрын

Perfect! Helped me with my project!

@s1udgeguts 5 жыл бұрын

You have a framing square (you can even make a quick one by simply placing a ruler on the edge of a sheet of card, drawing a line, place the ruler on an adjoining edge, draw another line then cut out the L shape to give you a square). Place the square so the sides touch the outer edge of the circle. Place a ruler onto the square so an edge of the ruler touches the outer point and inner point of the square (a 45deg angle). Draw a line on your circle. Move the square around - even an inch or so is fine - and do the same again. Where the lines intersect, there is your centre. Repeat the process with another line if you wish to check.

@edibleelegancecakeszim 2 жыл бұрын

I love you!! Thank you so much! I was having a hard time.

@TomahawkDIY 2 жыл бұрын

Glad I could help!

@thewind7 7 ай бұрын

Thank you so much!! Cheers :)

@ShahadatHossain-jx6my 5 жыл бұрын

number 3 is the best method thanks dud

@ssingh7990 3 жыл бұрын

Super!! I loved third one.

@johncaruso3824 3 жыл бұрын

Very helpful video. Thank you.

@SuperRamon77777 5 жыл бұрын

Which one is more practical for on the job use like the electrical circles on ceiling when putting on soffet

@Bob-wo1kr Жыл бұрын

I always use the third method. It is much easy. I sew to sell and sometimes I fold the fabric circle and iron it to find the centre of my circle.

@TomahawkDIY Жыл бұрын

Thanks for sharing!

@charlenegriffis5900 2 ай бұрын

Thanks so much! 😊

@1443will 4 жыл бұрын

I’m looking to find “2” centers of a circle. I make candles and use two wicks. I normally can center them by eyeing it but I’d like to be more precise. Any ideas or suggestions??

@TheWoodWerker 6 жыл бұрын

Thanks for Sharing! Have A Super Week!.....Gus

@toddluciani5502 4 жыл бұрын

A compass makes it super simple...Just open The compass up to more than half the diameter of the circle. Place your compass point anywhere around the edge of the circle and strike an arc inside the circle. Move the compass around to roughly opposite your first point and strike another arc. Now take a straight edge and draw a line through the point that the arcs intersect each other from edge to edge on the circle. That line will always go through dead center of the circle so you can simply find center by measuring half the length of the line, Or make two arcs from the opposite sides of the first two and draw another bisecting line that will cut directly through the center of the first line...no measuring required.

@jonhunt5408 3 жыл бұрын

Take a compass, set any length that is less than the radius of the circle, now place the point anywhere on the edge of the circle and scribe an arc in the circle. Do this four times, the points from which you do it do not have to be exactly opposite just roughly, at the points where the arcs intersect, (you should have four) draw lines that pass through opposite points, where these lines intersect is the centre. This works even for circles where you can’t make a template, where a square won’t fit, etc.

@andrealumsden2321 Жыл бұрын

wonderful I used the last one. So easy 🙂 Thank You

@TomahawkDIY Жыл бұрын

You're welcome 😊

@jessicalee7119 11 ай бұрын

🙌 Thank you so much! The paper template is perfect for me! I'm creating an art piece and can't put any obvious marks on the wood I'm using. ☮💜

@TomahawkDIY 11 ай бұрын

Wonderful! Thank you so much for watching!

@genekatauskas6904 Жыл бұрын

Everybody should have paid more attention in advanced geometry, piece of cake 🔨

@TomahawkDIY Жыл бұрын

Great tip!

@bwalyasapwe3397 4 жыл бұрын

This video deserves a thousand likes

@armorvestrus4119 3 жыл бұрын

Very useful information, better than just entertainment channels.

@factsoverfeelings79 Жыл бұрын

Excellent methods. Ty for this

@TomahawkDIY Жыл бұрын

Glad it was helpful!

@ashishngupta 4 жыл бұрын

Thanks man! I used the chords method to make a turn table from wood

@pianoman173 2 жыл бұрын

Awesome video! I love how you took everybody’s comments and suggestions, tested them all out and found the best solutions, along with shouting out each contributor. THIS is how the internet/KZfaq should be, showcasing the best of everybody’s collective ideas, not just one person showing everyone how THEY think it should be done.

@anthonypeterson5618 5 жыл бұрын

Use a compass. Divide diameter length by 2. Set compass to that half length and score from various points (at least 3 pointers) on the circumference.

@lw216316 4 жыл бұрын

thump up from me for number 3 I had a knife and paper within reach when I watched the video - so in a few seconds I had a dot on the middle of my circle ( a round plastic cap that I'm making into a wheel for an rc model plane. Thank you.

@alancrook1034 6 жыл бұрын

I cannot remember being taught inn Maths but it was basic in the Workshop.. "The right bisector of a chord passes through the centre". "The right bisector of two separate chords intersect at the centre." Basic!

@FlatBroke612 6 жыл бұрын

Alan Crook My “teacher” didn’t know what a chord was...

@michaelthibault7930 5 жыл бұрын

Carpenter's square (or any right angle of good repute); jam the circular planar object into the right angle; take a 45° right triangle and slide either acute angle along the inside edge of the c. square until the point of the triangle is at the juncture of the two interior edges of the c. square; the triangle's edge projecting from there falls exactly on the circle's diameter (and, implicitly, crosses the centre of the circle); draw a line approximately in the centre of the circle; rotate the circular object ~90°, and repeat the above line-draw; the intersection of those two lines is the circle's centre. The above, in a pinch, can be done with two pieces of paper (bond is relevant), one of which is folded exactly along a corner bisector (_not_ the same as the diagonal, unless it's origami paper).

@mikewhite4628 5 жыл бұрын

With due respect, should that not be, "The correct bisector of a chord......" which would be less confusing to someone who doesn't know these things being described?

@mikewhite4628 5 жыл бұрын

@@terrypold. I stand corrected, sir. I have never seen it written like that. I have a small gadget that I made years ago that does the trick without maths. Hoist with my own petard, I think!!!