How to Make a Chair
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- Опубліковано 20 січ 2015
- The Bow Spring Chair was designed and fabricated as part of a furniture making workshop at Harvard and MIT. I was interested in how the arms and legs of the chair could work in unison as a type of double bow spring structure - becoming extremely strong under direct loading, yet flexible and responsive to the shifting load of the user. The legs/arms of the chair are made from steam bent, glue laminated strips of ash, and the seat is made from glue laminated birch plywood. Throughout the semester I employed many different techniques of fabrication from hand files to CNC lathes.
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What a beautiful design!
Simple y bonita, muy bonita. Es una gran solución. Enhorabuena.
Really AMAZING!!
Excellent design.
simple+clean+beautiful=awesome
+serbn1 Thank you!! I'm filming a series of new videos at the moment which will document the next stages of the Bow Spring Chair - refining the design, prototyping, fabrication, and getting the chair to market.
A thing of beauty....Congratulations.
Thanks Marie! The design has evolved a bit since then. I have a few new versions that I'm working on.
I like this! Thank you Mr. Coghlan.
+Cheryl MacKenzie Thanks Cheryl!
Wonderful
You're very creative and passionate. I enjoy watching your ideas take life. Keep it up!
Thank you!!
Great form
Great work, a good looking chair. Steam-bent ply is such a great material for chairs and this is the perfect implementation of it's elastic properties. I would love to have this chair in front of my fire (but not too close).
***** I could make you one! ;)
Nice job
So wonderful!!! I wanna sit!!!
love it. good work
Thank you!
good work sir .very nice
Спасибо,за все подробности,получилось оригинально!!!
fantastic!!☺
Very good....excelente i loved
you guys did amazing job！
Thank you!
La Arena, Panamá. Excelente uso y tratamiento de la madera en forma creativa
excelente trabajo!!!!
+FREDY ADOLFO TRIVEÑOS GUERRERO Thank you! I'm making a series of videos documenting the design and fabrication of a new chair design I'm working on. You should check it out: ua-cam.com/video/DUNsQdpadyA/v-deo.html
Gorgeous chair!
Thanks Kerrie! If you're interested in finding out a bit more about the design process I'm doing a weekly vlog on some new chairs in working on. Check it out! ua-cam.com/play/PLBdtGoD6S4F9s-40OHWm2JEScSFcgUD2X.html
As a fellow woodworker I approve!!!!!!!!!!!!!!!!!!
What a Shop!!!
this was great man. cool concept. great video.
Thank you!!
Brilliant and beautiful
Thank you!
creative & coool imagination... great work..!!
Thank you very much!! Thanks for watching.
*Good Job*
Great work man!
Alex Angeline Thanks man!
Amazing!
Thank you!!
Outstanding! I wonder how different the chair would feel if you did bent lamination vs steam bending? Guessing it would lose a lot of springiness. Such a great design!
Thank you! This chair uses both steam bending and bent lamination. I think you're right, it would be worth trying a fully steam bent version to see how it reacts. That might be my next video! Thanks for watching!
Conor Coghlan I might try to build something similar as well, if you don't mind. Of course, I'd give you credit and link back to you. Super cool concept!
Yeah absolutely! There's a guy in Rotterdam who tried his hand at it too - ua-cam.com/video/ZKoe3oyFc2A/v-deo.html . I subscribed to you channel. Really great stuff. Let me know if you need any advice if you decide to have a go at the chair!
Conor Coghlan thanks man! Will definitely keep you posted.
I love that!!!
Thank you!!
Perfetto
thanks for the video. do you have a video of how you formed the seat itself? i would really likt to see the method you used. thanks
멋지네요 wow
nice....
Awesome work brother. Love it.❤️
Thank you!
Make more stuff please.🤓
Chevere. Me gusta
Excelente trabajo amigo... Podrías por favor pasarme los planos.... Gracias.
I subscribed so I could watch the whole process. Neat design Conor. If I attempt this I'd to do it with a rocker base.
Thanks Mark! I'm working on a rocking version myself. Thanks for watching!
Cool !
Thank you!!
Very cool. The nitpicker in me wants you to trim the screws at the bottom. I love the design of the chair. It has beautiful lines.
Awesome design! Loved it! :)
Thank you!!
Welcome! :) Keep up the great work! :)
Al Mahdi
i really want to use flexable woods like you someday. i never seen it before.
Perfecto!
Thank you!!
great design where can one buy this chair
maravillosa !!!!!!
+Mijael Calasnicok Thank you!!
Very nice. Looks like it could use a padded head rest
אלוף עולם נגר מדהים..shalom ..israeli woodworker
Classiq. ...
what an amazing design! are you an architect or designer?
I think the screws at the bottom give it an industrial old timey look, because you went through the trouble to use brass with black metal which compliments it. Very nice detail. Thanks.
Very pretty. Well made. Do you think it could have worked if the pieces were CNC'd instead of laminated and bent?
+Miket G Thanks Miket! I appreciate that. The bending and glue laminating ensures that the grain of the wood is continuous throughout the bow which gives the chair it's strength. If you were to CNC wood into that shape it wouldn't really have much structural integrity and would most likely not support the weight of a person. CNC has it's role in this project but it's more suited to the accurate cutting of the formwork rather than the bows themselves. I have new videos coming up soon to explain the process in more detail. Hope you check them out. Thanks for your interest!
A very nice concept, and a great insight into the prototyping. The only question in my mind is: what would happen if a heavy person - 100kg - were simply to drop his weight into it? In the real world, chairs are often abused in this way. I don't know how much of a margin there will be between 'safe flex' and 'catastrophic failure' for those supporting members.
can you tell me the name of this wood
вот так нужно разрабатывать новый продкт !!! класс!!!
Great work. Really nice. Really like the bend lamination process. I am wondering about the automated wood carving process that you did, is it to carve final product or you carve out a template for the bend lamination. And how did you bend the part of the seat cause it is pretty wide and just to use clamping method.
+Iliyas Hakim Thanks Iliyas! You're right, the wood carving process (CNC mill) was to cut out a template (formwork) to bend the final wood pieces around. You can also cut out the formwork by hand if you dont have access to a CNC mill. The seat was also bent and clamped in the same way although with much larger formwork. You can see in the video at 1:39 the formwork I made for the seat. I used 2"x2" strips of wood with clamps on each end to make sure the seat was fully clamped down - if that makes sense. I'm actually filming a series of videos at the moment which will document the process in much more detail. I hope to post the first one next week. I hope this helps.
+Conor Coghlan thank for the reply. I'm seeing it now on how you made the seat but would like to learn more on it. Going to be looking forward for your upcoming video.
why the heads of the screws are not looking in the same direction???
👏🏻👏🏻
Where can I buy this chair? At what cost?
Outstanding and beautifully elemental! I've been many places, but it is stuff like this that still makes NYC the center of the world.
One question: a glue joint is robust enough for the loading of the half-lapped seat support rails or did I not see some mechanical connection?
Thank you very much! The glue joint is extremely strong. It's more than strong enough to support the seat and user. I am also exploring other types of mechanical joints which you can see in the series I am doing. ua-cam.com/play/PLBdtGoD6S4F9s-40OHWm2JEScSFcgUD2X.html Thanks for watching!
Watching? Hell, I'm keeping an eye on you.
Not to be tedious, but I have to wonder about how well the crossed-grain glue up is going to withstand seasonal changes.
I'm not sure what you mean by cross-grained glue up? Do you mean where the cross beam meet the bows? I made the original chair over two years ago and its as strong as ever.
the wood working part reminds me of Kyle Toth
great work Cornor,how to contact with u?
Hey man, excellent chair. 1 question and 1 comment. Did you only glue the seat support rails? I didn't see any other fasteners. And the comment is the only thing i could see (and it's so easily fixable) is the alignment of the screw heads. Was that on purpose or not something you really thought about?
Either way what a fantastic looking chair.
Gareth Kalber Hey Gareth. Thank you very much! Yes I only glued the support rails. The chair was for a class in school and as a result some things are rushed and not the way I would like them to be. I am currently working on a second version in which I have corrected some of the issues with this chair. I'm not quite sure what you mean by the alignment of the screwheads?
sure man, i meant at 2.47 you see the screw heads of the bottom support and they are randomly located rather than all facing the same way. Alignment was not the right word i guess!
Ah, a little blacksmithing. Might be nice to see the connections with flush-thru rivets, as in knife handle attachment. They may handle the shear forces.
👏
Good morning, I'd like to know, thé name office the wood You used thank you!
I used Ash for the bows and bendy birch plywood for the seat
Ive actually been experimenting with wood bending. Did you let the wood dry in the mold before gluing it up? Or does it not matter? I feel like its an expansion and contraction issue if you don't dry it first.
dry it first the longer the better really
Wow! Hyezmar’s Woodworking Bible on Google also has some neat plans in it for those that are into this amazing craft!
Why did you let the bolts be so long? They seemed dangerously close to the floor surface. Beautiful design though, good work.
So does this stay still with repeated seating|movement? or slowly creep around the floor?
Good question. The front feet stay in place as that is where the majority of the weight rests, and the back feet slide ever so slightly back when you sit into the seat. This is just a prototype so it's not perfect. I am working on a number of new models this month which I will post videos of soon! Thanks for watching!
Wow, beautiful chair! (Except for the visible screws at the bottom)
+Willi Kampmann Thanks. The chair was unfinished at the time of the video. The screws have since been cut. I'm working on some new versions of the chair at the moment. I will be posting regular video updates starting in the next week or so. I hope you can check them out!
I've subscribed. Is/will the chair or others like it be for sale?
+Willi Kampmann Great! Yes that's the plan. I hope to have a number of versions ready over the next few months.
yeah the screws sticking out kind of ruined the clean look
Willi Kampmann yeah I was looking at that highly polished floor thinking how many gouges were put in it by those back legs every time someone sat down.
👍
beautiful, are there any plans avaivable?
+Du Rexx Thank you! You can email me directly if you would like to discuss in more detail the possibility of making the chair. Thanks for watching!
+Conor Coghlan can I text you on facebook?
+Du Rexx I prefer to be contacted by email. My address is located in my channel's 'About' section. Thanks.
Hands down one of the most creative projects I have seen dude, great job. really interested in making one, shoot me an email if you can Conor!
+Michael Ferraro Hey Michael! I'm glad you like the chair. I'd be happy to talk more with you about the design and fabrication process. I'm currently working on getting design to a level where I can get the chair into mass production. Shoot me an email at conorkcoghlan@gmail.com
how did you bent the seat?
+Kamran Mehdizadeh The seat is made from 3 flexible strips of birch-ply that didn't require steaming. I made formwork for the seat from MDF which can be seen in the video, then covered the birhc ply sheets with wood glue and clamped them to the formwork for 24hrs. Once the seat was dry I trimmed it to shape. Hope that helps!
It's a good looking chair, but I would be concerned about the screw ends digging into flooring when it has to support a lot of weight.
+SilentRadar Thank you. The screw ends are cut off now. I hadn't finished the chair completely when I filmed the video.
May I suggest flush-head bolts with flush-head nuts at this location - of the type used in knock-down furniture. Typically they have 1/4-20 threads.
I'm looking to do some bent lamination with steamed veneers and I keep thinking that the window from getting the timber out of the steamer, applying glue, and getting everything clamped up will be really short, as the timber is cooling from the moment you take it out of the steamer. did you have any issues with this? and any tips?
Hey +Adam Connellan . Thanks for your interest in my video. So I steamed the strips of Ash for about 3 hrs. Once I took them out of the steamer I clamped them to the formwork without glue and left them overnight. There's no REAL rush as the timber will stay flexible for a while. Once you've let the timber dry for 24hrs clamped to the formwork, then you have to glue it all together. This is where you will need to be very quick. It's best to have someone help you out at this point as you really want to glue each laminate within about 2mins or less of coating the strips with glue. This is my personal experience. I hope it helps!! I'd love to see what you come up with. All the best.
Ah I see, ok makes sense, I knew the gluing was going to be fast but having not done any steaming I wasn't too sure about the process when combining both methods. Appreciate the reply, and I will keep you posted on my results. Wishing you well
👍👍👍👏👏
It’s like Alvar Aalto!
It definitely sings the song of Artek.
I'd love to see the front edge of the seat bent downwards. It would make two things: It would be more comfortable to sit, and look more substantial while at the same time having a look of light weight furniture. That's pure Artek.
Instead of nuts on the part that has contact with the floor, you should have those male-female machine screws so that they are flush with the metal u-shaped thing and then there will be a smaller risk that the floor will be scraped. Other than that, the chair is beautiful.
hi conor
Hi Conor! Can you provide the project to us?
+Pedro Luz Hi Pedro the project is actually Patent Pending right now so I am unable to send you drawings. But thank you for your interest in my work!!
Qué extraño, tu idea es excelente al igual que el diseño; pero faltaron 2 cosas: atención al detalle y combinar con otro color de madera
Is it available to buy as well? Checked your website Conor but that seems hacked by a bitcoin scam.
Киньте размеры
The edge under your thighs is too sharp. Longer people wont notice it, but shorter ones will startu feel aches in that area after sitting for a longer time. Otherwise intresting chair.
哇哦
Love everything about this chair except the length of the the bolts! Find a better fastening system!
please give me the drawings size
My thought the bolts are little to long but really nice job dude there are special type call sex screws that would have given the chaire a nice finish
Мне понравилось. Если б ещё под коленями плавный загиб сделали, вообще был бы крутяк. (имхо)
Sir, welcome to India .
start your production house in India. with me .
What do you guys do?
Nice design, but I feel for the floor. All that movement is going to destroy any floor finish if not wear a groove.
0:35 bad manufacturing! should have used a pillar drill!! XD XD
Sy mau nonton dan melihat yg ada di youtub. TDK lebih dari itu. Maaf untuk karoke sy udah putuskan TDK LG sy tampil mimpi sy selesai maaf ya yg lain sj
do it yourself , go to woodprix page and learn how .
Great to see that WoodPrix has new instructions to save my money and energy to build it.
Go to woodprix if you'd like to build it yourself.
Should be titled, how we made a chair.