18th Century Mechanism Reconstruction for a Museum in France

Lovely day for a reconstruction of a lost mechanism from the 18th century, Design by Giovanni Poleni.
Museum Homepage:
www.univ-brest.fr/instruments...
The people behind the research:
PietroMilici:
univ-brest.academia.edu/Pietr...
Frédérique Plantevin
Research:
www.researchgate.net/figure/P...
Future Publications:
www.scientificinstrumentsociet...
Further Research and Links will be added in the future
Instagram: / urituchman
Patreon: / urituchman

[@johns2200]

"'Can you make this mechanism?' they asked. I started laughing 'Accurately,' they continued. I stopped laughing."

[@thomashverring9484]

"Have you heard of Clickspring?"

[@thewolfin]

Yes these were lines in the video thank you for transcribing them

[@bawdydog176]

I came, I snorted laughter, I stayed for the whole video.

[@austereengineering5809]

Gold statement by Uri

[@itermercator114]

You know you're a master artisan when people can ask you to do museum level reconstructions, and you can do it flawlessly, without actually knowing what it does beyond make lines lmao. Seriously though great work and glad you are getting the renown you deserve

[@urituchmanpigeon]

Thank you my friend!

[@timsmith1589]

So what does it do??

[@Jibanizer]

"the mathematical universe... which is ... ...the actual universe" Best line!

[@SoggyBottomForgeJoe]

I agree, right up there with "Have you heard of Clickspring?" Haha

[@robincamps8469]

Yes,I agree.. and in a long Winternight after a long Summerday

[@Hain72]

I see, you have fun to work with materiel like this. That's great.👍

[@axeman2638]

the universe neither knows of or cares about maths, it's a tool invented by man to incompletely describe and model some aspects of it.

[@SgtElev3n]

@@axeman2638 ok grandpa

[@elliotcm]

"Get me Clickspring! Wait, he takes how long to finish a project? Damn, if only there were some kind of.. Budget Clickspring". *Uri Tuchman bursts through the wall, into the wrong room*

[@frankierzucekjr]

Lmao. Isn't he hilarious

[@sheep1ewe]

The main differense is that Uri could achieve the same things without any of all those expensive machining tools. (And The machines he are using fit's the theme very well, i realy love the old late for example.)

[@fnordfnordsson4385]

@@sheep1ewe That seems a little unfair on Clickspring. He certainly has the machine tools and knows how to use them, but given that he also not only hand files gears but makes the files for it, it's certainly not that he "couldn't" do it without the machine tools.

[@sheep1ewe]

@@fnordfnordsson4385 Yes, maybe my joke was a bit too far, i hawe the deepest respect for Cris and i watch every single video he made public.

[@piccalillipit9211]

Antikythera year 5... "This year we make the worlds not perfect screw by hand filing a 40kg block of forged steel down to a 2mm screw"

[@marialiyubman]

I’m pretty sure you’re supposed to stain the wheel thingie with ink, that’s why it’s removable.

[@keirfarnum6811]

That makes sense. Good catch.

[@bobbysmith6967]

Laughed out loud at “have you heard of Clickspring”

[@barefoofDr]

Love this channel and Clickspring.

[@marcpym5251]

Sundays with Uri - perfect day

[@maxximumb]

A beautiful reconstruction Uri. Now if we only had a tame mathematician... Oh wait! Matt Parker or Hannah Fry would be able to explain this.

[@DuffTerrall]

If he made it not quite accurately but very nice looking, would that be a Parker Curve?

[@hexhill1688]

I live literally 20min away of this museum, already visited it 3 times and its really cool ! I'm pretty excited to go see your builds when they will be on display ^^

[@chamelius]

"Have you heard of Clickspring?" I chortled.

[@olympic-gradelurker]

We all chortled.

[@berellevy2]

I laughed

[@matthewb8229]

Some of us guffawed.

[@BichaelStevens]

I sniggered

[@andypughtube]

I giggled. It made me doubt my masculinity, but there it is.

[@marcpym5251]

I love the perfect fit of the frame inside the two rails and how smoothly it glides over the wooden surface. Wonderful reconstruction

[@WHATAGIRLWANTS2009]

Uri, I love your ability to make complicated machines with simple hand tools. And that you don't take yourself too seriously! Thanks

[@frankierzucekjr]

Same

[@rhyboy1]

“It’s not perfect, but it’s me.”…. That is what makes it perfect.

[@erikbagnenko7386]

the homage to clickspring was genius! haha

[@threeriversforge1997]

Great build! No idea why mathematicians would get all googly over drawing a curve, but if they're happy with it....

[@jonpierce8342]

I think its the "golden ratio"

[@olympic-gradelurker]

@@jonpierce8342 they want to draw eyebrows?

[@guilldea]

@studer1679 no, I have a feeling the next one will be a tractrix. This one is a logarithm, Im not sure but I have a feeling choosing the length determines the base of the log you draw. They were used to solve equations graphically.

[@sshep7119]

The mechanism somewhat dupcates the Logrithmic or Exponental curve which have a unique relationship betwenn X and Y which no other method of free hand drawing or tracing can duplicate. It may sound irrelevant now, however consider the time in which it was designed. No one had ever seen a true Log or Exponential curve at this point, they were approximated however no accurate representation was ever demonstrated. We take a lot for granted in our digital time, just look at a slide rule demonstration video. It is likely that anye reading this has a parent, grandparent, or relative that had to use them in school/life

[@KX36]

"In 1728 the Italian scholar Poleni took up the theme again. He designed a tractional instrument (see Plate 10 [this mechanism]) and sent copies of it to three colleagues. In his covering letter he argued, again, that by means of his instrument the problem of the *quadrature [area] of the hyperbola* was now for the first time solved in a geometrically acceptable manner" www.gewina.nl/journals/tractrix/bos89.pdf It seems the context of this device is the ancient topic of Euclidean geometry, about whether things can be constructed with the most basic physical tools, (straightedge and compass) rather than by arithmetic. These devices construct transcendental curves without arithmetic, but they're still not a straightedge and compass, so some 18th century controversy perhaps. Or as that article so nearly puts it, "The motif of tractional motion as mechanical legitimation of transcendental curves"

[@FearsomeWarrior]

Reminds me of my love of Vaucanson’s lathe in the Paris arts and sciences museum. 1751 first lathe to feature angled ways and solid frame. I hope to eventually visit and see it in person. The video from Machine Learning called ‘The Machine that made everything’ is amazing.

[@valentinozangobbo]

Oh that was a great video, I come back to see it every now and then

[@19Edurne]

I believe you meant "Machine Thinking"... :)

[@Maker238DeLoach]

I don’t know why it’s taking me so long to say this but here it goes. You are by far my favorite KZbin channel. PS I love you.

[@frankierzucekjr]

He's definitely one of my favorites as well. I love the goofiness, makes him real and not pretending to be someone else.

[@Maker238DeLoach]

We all make mistakes. it’s when we learn from them, thats what matters the most, not the mistakes themselves.

[@moretimethanmoney8611]

😳

[@Maker238DeLoach]

My channel is built on mistakes!!

[@schwig44]

I think it's because you typed "I don’t know why it’s taking me so long to say this but here it goes". That's why it took so long

[@corwin32]

This intro almost sounds like an alien pretending to be human writing a memoir.

[@perjeppson7800]

Yes, or AI

[@Codebreakerblue]

Oh it _does_

[@lordginger636]

"Have you heard of clickspring" "We have but we are short on time and funds" "Say no more I Wil build you a stunning beautiful and accurate-ish reconstruction"

[@codemonkeyhacks3973]

One of the best video intro's i've heard :D "on a cold winter night, after a long summer day"... "have you heard of Clickspring?", LOL

[@isaacnguyen6944]

Poleni was a venitian mathemathician, astronomer, physicist,... genious. This contraption is to draw a logarithmic curve.

[@jamesralston5293]

That's what I was looking for

[@timsmith1589]

What is that?

[@isaacnguyen6944]

@@timsmith1589 it is a curve representing a logarithmic progression, reverse of an exponential progression.

[@olympic-gradelurker]

Uri is asked to build some beautiful doohickey thing and at the end is like "hm, so that's what it does."

[@MrSmith_]

It's always a pleasure to watch you work Uri! Keep up the great work and may you continue to hone your skills as a master craftsman for many years to come.

[@digitaIgorilla]

A beautiful machine. So they ONLY wanted 'Uri Tuchman level accuracy'? Fortunate they bumped into you when they did 😉

[@squelchstuff]

Absolutely beautiful Uri. At first I thought the device was an overly elaborate method of tracing one quadrant of an ellipse. I'm glad I read the paper now. It is in fact a logarithmic curve. Fascinating. Oh, and that intro was captivating, and just too funny. Thanks.

[@paquebot_T6]

Was wondering wich one it was. Thanks.

[@SamCropper]

Beautiful work as always, Uri. Thanks for the video!

[@markh2128]

your level of detail and use of mostly hand tools to create your creations is truly amazing!

[@as-qh1qq]

Uri Tuchman deserves to be preserved for posterity

[@DullPoints]

Whenever I watch you work, I have to resist the urge to buy brass and engrave something.

[@andyb7963]

Then do it

[@DullPoints]

@@andyb7963 I did it! I found a Buck 110 with brass bolsters and i did some terrible engraving with a dremel, but i did it. 😁

[@BadYossa]

Great intro -raised a few smiles. Your videos always delight Uri. I listened to a podcaster interviewing you a few years back and have ended up listening a few more times and sharing with sons- both subscribers - as well as some friends. You're, without doubt, one of the most interesting and talented people on KZbin.

[@rosemarshall1219]

I live in Brest !! Can’t wait to see your beautiful piece of art.

[@siegfriedgsa]

I love your videos so much, your creativity, humour, passion for oldies make it perfect for me ! I'm very glad your talent is recognized my friend ! Cheers from France :)

[@kjamison5951]

Oh, how I have missed you! Glad to see you are well and creating content! Thank you, Uri!

[@TheHolehooper]

Love this channel. Keep it up Uri

[@bygollystudio8567]

Your workshop is beautiful it is so organized and tidy. This machine is very interesting.You made this difficult build look easy.Thank you for the video

[@PAINFOOL13]

Always a Pleasure Uri. thank you .👍🏻

[@rozewalker6726]

Beautiful. I love your humor. It's good to see you working in your new shop. Congratulations 🎉👏

[@wilwulpje5684]

you made a great ingenious, eeeh thing . that line is really amazing... thank you mr. Tuchman it was a pleasure as always....

[@shedmanx3640]

Fantastic Uri. I really enjoyed seeing you create this piece.

[@Guruc13]

Man this just continues to impress. Thank you so much!

[@vladorlovsky6623]

Great video Uri. I love your new shop.

[@Jayneflakes]

More beautiful machines, thank you for sharing your work.

[@fkyew]

I love your "projects" and look forward to each new one like a child waiting anxiously to get his hands on a new toy. You are in a class all your own. One of the most talented persons I have ever seen. I thought I was a most talented fabricator leaning on 60 years of learning and making "things" with my hands. But I bow before you. I am but a tinkerer in comparison. Your hands and mind have been blessed and yet you are most humble and simple. God bless you and thank you for sharing with us all.

[@NomadMakes]

Thanks for another great video Uri. And as always, looking forward to the next one. Cheers from Norway.

[@BrightBlueJim]

Perfect, Uri, perfect.

[@hugodesrosiers-plaisance3156]

I am learning a lot from your videos, and this video may well be the most useful I've watched on your channel so far. Thanks, Uri. Amazing work.

[@fredrichardson9761]

Amazing device you made there! Really amazing craftsmanship - and quite a lot of effort - the result is a really elegant piece of equipment as always! Thank you for sharing this!

[@macbilling6410]

Uri, That's is fantastic as always.

[@georgewolf7063]

Oh! How ingenious! And your rendition of it looks pretty classy in my opinion! I enjoy seeing your craftsmanship.

[@alienfac32]

Gorgeous work. thank you for all the effort.

[@1924ab]

Beautiful, very nice job as always.

[@TheWindGinProject]

Most excellent. Thank You Uri Tuchman.

[@alink5918]

TA-DA!!! Beautiful! Great work Uri and if I ever get to that museum I'll look for it!

[@markwatters6875]

That is a beautiful piece made by a marvellous craftsman. Thank you for your videos, you are a true inspiration.

[@TheMilkshakeuk]

Good to see you back in action Uri 💪🏻

[@HofsFinest]

Missed you man! This was just what we needed!

[@markhedquist9597]

You are one of a kind, and I loved the video! What an honor to make a museum piece! I was glad to see your lathe in use. I will be building one similar to it at some point and can't wait to do so. Thanks for the wonderful video, and all those to come!

[@Postfrogish]

As always incredibly inspiring and skilful work. Thanks for sharing and, as far as I know, being you.

[@Discostu102]

Thank you Uri! Wonderful craftsmanship here. Great video. Hilarious opener.

[@herzogsbuick]

Fantastic! I just checked out your website as well, your art is incredible. This is my first time seeing your videos, and won't be the last. I appreciate the time you put into the absurd, it fills my heart. Thank you.

[@TheMegaross91]

The most impressive thing about Uri is that he compresses days, weeks of work even, down to 14 minutes and has yet to cut his ear off.

[@paschoalgiovani]

I love the new shop. Keep doing this awesome work. Greetings from Brazil!

[@mdhebert]

Great to see you working in your new shop! :)

[@kevinmurphy5506]

Truly only a master craftsman and artist could create something that beautiful. Bravo URI you're the best!

[@DaveyL1954]

Uri, Your work is truly exquisite. The craftsmanship is simply wonderful. Do not under estimate how good you are. Your work is breath-taking.

[@scottsmall9898]

First video I've watched of yours, I have to say you are a true master of your craft. Very good details on all of your pieces. Wish you talked a little more and explained what you were doing, for the people who need more details. I think I'm going to make one of these and give it to one of my colleagues who is a super math buff. Lines are so amazing and he always shows me something new with them. Great work going to subscribe and check out what else you have created/designed, i know I won't be disappointed.

[@johngalvin1653]

Thank you, Uri.

[@vishalwankhede7900]

Thank sir, I was waiting since long time for your video.

[@PlayfulCalamity]

What an amazing thing to be asked to do! Im so happy for you. Also i love how shinny that is

[@iannesbitt2986]

Great to see you making things again

[@michaelryan6884]

Wonderful job and great that your work is now in a museum!

[@morganmeehan5991]

Loved the video, thanks for sharing!

[@Joe.Doucette]

Beautiful work, as usual. Your sense of "ha ha" is always appreciated, as well.

[@scottyhughes9179]

fantastic Uri, a great video.

[@Si74l0rd]

Exquisite work, as always.

[@moonlightsnowfall6734]

Congratulations! I'm not surprised that the museum came to you. Looking forward to the next one.

[@leonbrooks7781]

Amazing work love to see your creations

[@johncarter9067]

Beautiful work

[@midgarddaemon]

I love this, as always it is a great joy to see your talented work unfold. 😍🤗👍

[@bluecobra6294]

Amazing craftsmanship, a pleasure to watch. Many thanks wonderful Video

[@williamstevens7934]

Thank you, just beautiful.

[@cat637d]

Beautiful work!

[@lewisatlas6725]

Thanks for another finely crafted mechanism done with wit and humility.

[@staxlhax1849]

Finally he returns. So much to love, as ever.

[@ShadowLink9999]

Great video as always Uri! Can't wait to see the next video where you build an even more complicated "line maker" device.

[@tomfarrow710]

Fantastic job on this project

[@Lab_Dad]

Love you videos, thanks for sharing!

[@jimengr]

Cool project. All that hand work is amazing.

[@gregarrell6132]

Amazing work and skill. Well done

[@kevinmurphy5506]

Couldn't figure out what I was missing until your videos were put up. Thank you, URI.

[@ZzZKatoZzZ]

Good job Uri !!! definitely like♥

[@Ccjhghbbb]

Wow what a cool thing to be a part of! Great work as usual!

[@pashahart8698]

You do fantastic work.

[@clivingood]

Thank you, great detail and well told.

[@barnesbuilt1250]

“A long time ago on a cold winter night after a long summer day” Me: oh this is gonna be good.

[@jonfeuerborn5859]

Beautiful work as always, Mr. Tuchman (however you pronounce that)! What a simple and elegant way to plot a curve.

[@wernerrunkel5378]

Really a masterpiece! - And more than craftmanship, it is art ...

[@karenmusa3052]

What a absolute pleasure it is to watch a craftsman at his work. Just beautI fully and detailed work. U are a true craftsman and artist. Thanku so much for sharing your amazing talent..😆

[@gk6993]

Amazing work.

[@rickschuman2926]

This is the sort of thing for which I have subscribed to your channel. I do 18th century woodworking so I am aware of the sort of technology that was available then. You were the best choice for this project I think. Other than the source of power for the tools and machinery, the methods you have used are, most likely, very close to the way this mechanism would have been made back then. Hope you had fun.