Mechanical Arithmometer Restoration - Felix M a Maze of 400+ Pieces

[@rustyshadesrestoration]

Hi folks! It is one of the most complex restorations I have ever done, and I enjoyed working on this old Felix calculator/arithmometer a lot. I still need to learn how to use it correctly, and If you do, please feel free to write me a comment and not only! I respond to every one! I hope you like the video, and please give it a thumbs up for more! Cheers! Johnny

[@ВладимирПименов-ф2ж]

Как Вам техника из СССР?

[@teariana1]

If I could play with for a couple days I could probably figure it out, sorry. I pretty good at these kinds of things.

[@markbrownfield437]

Have a look at 1stSpyGuy, he demonstrates how to operate machines similar to this one.

[@aggese]

You still have some signifikant binding in the mechanism, and it looks like the revolution counter reset was inproperly installed, I would start by posetivly drenching every mechanical part in mineral oil for an extended time, both to disolve old oil and to lubrikate everything

[@rustyshadesrestoration]

Thank you. I'll take a look.

[@williamjames9515]

I'm fairly certain I could take this machine apart. I am confident that I could clean it. I am absolutely certain I would never get it together again. Great video.

[@jmsmom67]

Ha! Absolutely!😂

[@teacheme]

One of the best comments I have ever read on KZbin. Concise, to the point and so very,very true. This restoration deserves many likes.

[@aggese]

Most of the time when you find one of those they are actually in working order, just that all oil have hardened and ceased it up compleatly, so for those cases its unessesary to disasemble any if the intrecate parts, I would even recommend against dissasemble too much Easiest repair is to just put it in a large bucket of minneral oil for a week than carefully moving things around, that usially diesolve the old grese and lubricate the parts, if some parts are still seased up you might have to put them under solvant for a few day and then lubricated. If that dont work something might actually be broken or rusted but thats rare

[@punkhead4312]

😂😂😂

[@nevillesmith9795]

🤣🤣🤣🤣

[@nevillesmith9795]

The mere fact that somebody came up with a concept to design something like this is remarkable let alone what it does. All the intriguet parts...it blows my mind.

[@rustyshadesrestoration]

I agree! I was mesmerised all the time while working on this project. Those who designed this machine deserve all the credit.

[@nevillesmith9795]

@@rustyshadesrestoration and last but not least...you did a phenomenal job yourself working on it and restoring it to it's former glory

[@jus1taj]

Same. It’s incredible.

[@tommcewan7936]

Check out the Curta calculator

[@rosemorrison7075]

Hi Johnny. I'm over 70 but havenever seen one of these calculators. You did a magnificent restoration on it. I hope you can learn how to use it!

[@rustyshadesrestoration]

Many thanks! I will!

[@Zardox2]

I am just under 60... and I HAVE seen one of these (or very similar) This is very cool... And I am impressed that you got it all back together... let alone back together AND working! 😳😁👍

[@kas-cor]

Maybe because this is an adding machine made in the USSR

[@VZrus]

Мне почти 50 и я помню как играл в детстве с таким. ✌🏻

[@billspence1799]

I'm 85. In 1959 I used the Swedish version of these to calculate quotations for pension schemes. There was on every desk

[@teariana1]

Wow! A mechanical abacus. I'm so glad the printed numbers weren't ruined with time, they're so unique. This like one of the very first precomputers. I'm glad I decided to watch you again. Your work and consideration to detail has definitely improved.

[@rustyshadesrestoration]

Thank you for watching my work! I'm always trying to improve what can be improved. We are all learning by doing stuff 😀

[@julianr.7186]

I think this is your most difficult restoration so far. Not only for the cleaning, brushing, painting...but just assembling it again must have been awfully hard!!! Incredible job!!

[@rustyshadesrestoration]

It took a lot of time, and I admit I was overwhelmed a little, but I managed to find my zen and continue the project. Now I'm pleased about that decision.

[@julianr.7186]

@@rustyshadesrestoration That´s what life is about!! Congratulations again!

[@georgebrown8312]

That is incredible how you restored that arithmometer to working order. It looks much better too. I have never seen anything like that before. Excellent work.

[@rustyshadesrestoration]

Thank you so much for your kind words and for watching my videos. Cheers!

[@Oleg-yf2lz]

Hi Johnny! Great work, nicely done. A few words about this device. It was produced in the Soviet Union since 1929 and up to 1978. The price of yours is 15 roubles ( written on the back side). The factories were situated in 3 towns - Kursk, Penza & Moscow . Why it has name Felix? It was named after Felix Dzerzhinsky- Russian and Poland revolutionary. My best regards.

[@rustyshadesrestoration]

Thank you for the information, Oleg. Now that I know a bit about its history, it is even more interesting.

[@Oleg-yf2lz]

Me again...just came to my mind. Also, it was a photo camera named after Dzerzhinsky - ФЭД ( Russian abbreviation) stands for Felix Edmundovich Dzerzhinsky. Just for the information!

[@rustyshadesrestoration]

I apreciate it! Thanks! :)

[@AnnaInSweden]

When I was a child, some 50 years ago, my grandfather had one similar to this. When we visited him I always played with it. It worked perfectly but I had no idea what it was used for.

[@undampedmule]

A brilliant piece. I studied accounting but operate equipment. I really love seeing this old computational device brought back to life.

[@Jack908r]

Watching these cool old machines get cleaned up and brought back to life is one of the most satisfying things to watch on the youtubes. Great job.

[@rustyshadesrestoration]

I'm glad you enjoyed the video. Thank you! 👌

[@robfrancois]

I've never seen something that small contain so many parts and pieces. Good job on getting it back together.

[@MichelMorinMontreal]

Here, I confess that I'm hesitating between praising the exceptional restoration and expressing concern through a soft form of masochism! What an incredible amount of work! This object now belongs in a museum...

[@anniewardlow9297]

Great restoration, Johnny! I always look forward to seeing you put out a new video. I'm amazed!👍

[@rustyshadesrestoration]

Thank you so much for watching my videos. I highly appreciate that!

[@mskayla7747]

Wow! I'm in awe. That's an incredible restoration. Bravo, sir.

[@rustyshadesrestoration]

Glad you enjoyed it! 🙂

[@Orygungearjammer]

Amazing. I could have taken hundreds of pictures, hours of video, pages and pages of notes, and I'm pretty sure I still couldn't get that thing back together. Great work!

[@ЕленаЛисанова-х5ф]

Когда шел процесс разборки -у меня была тихая паника ,казалось всем деталям в обратном порядке не суждено собраться ! И Какой же восторг видеть механизм в идеальной форме!

[@billzorba9424]

10 out of 10 for just remembering where all the bits go 😊

[@rustyshadesrestoration]

Hahaha! Thanks!

[@ВладимирШвецов-ж7м]

Когда у папы в отделе, в 79ом, заменили Феликсы на калькуляторы Быстрица, десятка полтора их оказалось в моем распоряжении... Ностальгия...))

[@x84pav84x]

У моей бабушки был такой. Огромное восхищение вызывает такой аппарат, его изобрёл очень умный и талантливый человек. Считает не хуже современного простого калькулятора. Что же касается работы, то я очень жалею, что нельзя поставить десять лайков. Только механизм немного заедает, можно было немного смазки добавить.

[@Nefertiti0403]

One thing I have to say that I admire is how you can take all of this apart and remember how to put it back together. I’d have to record everything from the beginning just to see how to put it back the right way

[@samanthadean1083]

Could I have taken this apart? Yes. Would I have been able to reassemble it? No way in heck… 😑 Awesome job!!! ❤️❤️❤️👍🏻👍🏻👍🏻

[@jmsmom67]

Wow! I would have ended up with a pile of parts! As always I always read the description to find out what information you have about the project and I like seeing how long it took you. Thank you for sharing

[@rustyshadesrestoration]

Glad you enjoyed it!

[@marciagarcezmanzella7132]

The restoration was beautiful and perfect. Congratulations!😀💜💜💜

[@rustyshadesrestoration]

Thank you! I'm happy that you enjoyed this project too. 😊

[@marciagarcezmanzella7132]

@@rustyshadesrestoration 😀💜

[@darkfury82]

I wouldn't ever have the patience to do all of that. Many kudos to you. Watching restoration videos like this has always intrigued me. They don't build anything to withstand the test of time like they used to...

[@adamthethird4753]

Planned obsolesce

[@vinceianni4026]

Hello mister beautiful restoration beautifully restored good job well done

[@rustyshadesrestoration]

Thank you very much!

[@grahamturner5963]

Hats off to a magnificent piece of work. I've never seen anything like this before

[@rustyshadesrestoration]

Glad you like it! 🙂 Till I saw it at a flea market, I also didn't know that such a thing existed.

[@pauldarke8024]

A great video, wonderful skills. Also in awe of whoever designed it.

[@rustyshadesrestoration]

Thank you! Yes, the person/s who designed this deserves all the applause 👏

[@АрменБолужев]

Благодарю мастера за отличную работу. Все сделано с душой. Спасибо за труд. Удачи вам на канале. 📹🛠️👍🔥

[@marlenneespinoza6403]

Tremendo trabajo. Felicitaciones 👏 Saludos desde Valdivia al sur de Chile 🇨🇱

[@rustyshadesrestoration]

Gracias 🙂

[@Mikey__Mike]

The amount of detail you went into with this is insane!…Great video!

[@rustyshadesrestoration]

Glad you enjoyed it! 😃

[@Ms.Cats-if.you.please]

♥️♥️♥️ so many parts! Just wow! Beautiful restoration, but I don’t know how you kept track of all those parts! ♥️♥️♥️

[@rustyshadesrestoration]

Thank you! Cheers!

[@King_TuTT]

really wild somebody engineered this. so many little parts. I couldn't imagine building one of these from scratch on how difficult that task would be

[@Schneekanone_TR8_gaming]

"Hey, great work with the number wheels! But maybe you could make the plastic frame white so that the numbers are easier to see. A simple trick: put the wheels in a solution of water and UV agent, then shine a UV lamp on them for a few hours. This will make the yellowing disappear and the numbers will really stand out. Just a tip that I would recommend!"

[@rustyshadesrestoration]

Hi, thank you. I know the technique, but that is paint, not white plastic. The wheels are made from aluminium. Cheers!

[@mikewinny3856]

О, Железный Феликс! Я помню те времена, когда они продавались в канцелярских товарах. Стоил, по моему, 15 рублей СССР. Кстати, не так уж дёшево! Хорошая работа по восстановлению исторического прибора! Для аутентичности надо было для покраски использовать "молотковую эмаль" (hammer enamel) - она до сих пор есть в продаже.

[@rustyshadesrestoration]

How much will it cost in these days?

[@mikewinny3856]

@@rustyshadesrestoration I don’t think it’s too much of an amount - I’ve seen a couple of these adding machines as elements of installations in accounting departments along with wooden abacuses, but it’s all for fun and therefore they won’t pay much

[@michaelsmith7641]

This is how restoration should be...top drawer stuff...keep the good work up.

[@rustyshadesrestoration]

Thank you, Michael! 😀

[@steffanmcbee7886]

I just took a picture of my cat watching this video with us. He enjoys it as much as we do

[@rustyshadesrestoration]

Wonderful! I would love to see it.

[@steffanmcbee7886]

@@rustyshadesrestoration sent it to you on Facebook Messenger for your page. It was the only way I could figure it out.

[@rustyshadesrestoration]

Thank you! I'll check it out! 😀

[@kitsuanuma5569]

Looks amazing! Im sure i would lose at least 50 pieces before i even finish cleaning let alone put it together!

[@rustyshadesrestoration]

Glad you like it! 🙂

[@JohnnySilverhand-ei2rd]

Świetna robota stary👍 Kalkulator wygląda jakby wyszedł dopiero z fabryki.

[@rustyshadesrestoration]

Dziękuję bardzo!

[@Mariano.Bernacki]

For addition: 1) zero the machine. 2) write the first number to add using the levers at the top. 3) turn the handle in the add direction until the first number shows in the window to the bottom. 0 + first number = first number. 4) write the second number with the levers at the top. 5) Turn the handle in the add direction. Results show at the bottom window. Substraction is the same, but in reverse. For multiplication: multiplication is repeated addition. For example 10 X 5 is 10 + 10 + 10 + 10 + 10. 1) zero the machine 2) write the number to multiply using the levers (10 for example) 3) turn the add lever 5 times. 4) read the result on the window. The Bottom left window is a counter, it will say 5 when you have turned the handle 5 times. Useful ehwn multiplying, say 124 * 36 so as not to have to manually count 36 turns of the handle. Just check the counter window. Division is the same but in reverse (division is repeated substraction) The sliding tabs are for your reference so you can put decimal points wherever you want them.

[@rustyshadesrestoration]

That's a great piece of information! Thank you for sharing it with us! 🫡🙏

[@Mariano.Bernacki]

@@rustyshadesrestoration Also I forgot to say that moving the carriage left or right changes the multiplication, for example to multiply by 300 instead of turning the handle 300 times you move the carriage 3 places and turn the handle 3 times.

[@adelaluz]

i guess it. was very practical in the case. you were performing. a very large balance sheet

[@johnbrown8059]

Fantastic job! The only drawback... after posting this video, you will become the single-source repair person for arithmometers for the entire planet!!! lol

[@mileticmile2911]

Bravoooo maestro odlično uradjen posao.Veliki pozdrav od vjernog pratioca Mileta.

[@andrzejporeda7281]

Przepiękne maszyny przepięknie jest odrestaurowane ta maszyna Pozdrawiam serdecznie. 👍👍👍👍👍👍

[@rustyshadesrestoration]

Dziękuję bardzo! Pozdrawiam

[@SERG34RUS]

Отличная ресторация 🎉

[@paulSVB]

Стал, как новый! Даже немножечко лучше!!! Класс!!!

[@jfhorselenberg7778]

U are a genius, by putting it back together ❤️ again😊

[@DakotaG-g8q]

How do you know how to put stuff together after taking it apart? Do you rewatch footage? Or do you find manufacturer bluprints and things online? I've always wondered this, your work is amazing, and i love to see people restoring peaces of time just like you.

[@rustyshadesrestoration]

Both, and sometimes I'm taking pictures as well. I have a good photographic memory but if the project takes longer than 10 days I need to consult the pictures.

[@norman9076]

As I was watching you take this machine apart, I was wondering if you were brave or crazy. I've come to the conclusion that you are neither. You, sir, are a master of your craft with the confidence that comes with it. Great job and great video.

[@rustyshadesrestoration]

Thank you so much! 😅

[@MrsIsmena]

What's a brilliant restoration! How many pieces did you clean! Incredible

[@rustyshadesrestoration]

Thanks! Indeed, there was a lot of small parts to clean etc 🙂

[@Falconurbex]

Amazing resteration ur a braver man than me for tackling that pheew im glad u got it done it look amazing now well done sir.

[@rustyshadesrestoration]

Thank you! 👌

[@christinaalves6804]

O maior respeito por quem tem essa paciência e dedicação. Eu de minha parte fiquei cansada só de ver...e olha que aumentei a velocidade. Parabéns!!!!😊

[@rustyshadesrestoration]

Muito obrigado por verem os meus vídeos e pelas vossas palavras simpáticas! Divirtam-se!

[@piparalegal2019]

Reading the description of this thing makes my brain hurt, but your restoration of it is beautiful! But, then, I'm not a maths person. Maths and I don't get along, really.

[@mojoomla]

You are a genius mechanic ! and whoever conceived and designed that machine is an ET.

[@juliusjp3661]

"Железный Феликс". Легенда. Внешность сделана отлично. Но регулировку, судя по всему, сделать не удалось... Но - респект, однозначно!

[@carolmurphy9931]

This video was fantastic. 😊

[@rustyshadesrestoration]

Thank you! 😃 Glad you enjoyed it.

[@MrArtVendelay]

State of the art, Soviet made calculator circa 1989, 17 years after I bought my first Texas Instrument digital calculator.😝 Super nice resto. Love it.

[@Jack908r]

But you have to admit, this ones way cooler. lol

[@MrArtVendelay]

@@Jack908r In 1972 my friends Bowmar Brain and a year later my TI was way cool.

[@alblgz]

USSR had digital calculators since 1970s. arithmometers were made not because there weren't alternatives.

[@sugarsammy7209]

You're a braver man than me! I wouldn't touch this thing with a 10 foot pole, I'd never be able to get it back together, lol. I'd just throw the entire thing, still assembled into rust remover, and hope it still works

[@g1234538]

This was crazy, there were so many parts! It's really fun to watch you restore everything! Your videos are so great! Just wondering, I'm not knowledgeable about these things, but why did you not need to do a hardening/tempering step after casting the new piece? It almost looked a bit bendy as you were breaking it off the supports.

[@rustyshadesrestoration]

The part was still hot when I break it off, after that became very hard. I used 7075 aluminium. Is the most common of the 7000 series grades. It is an extremely high strength alloy; the strongest of all commercial grades of aluminium.

[@luciusholdogeta3076]

Suuuuuuuuper Food!!!! You loves this Job ❤❤❤❤

[@jamesfield5346]

You wear many hats my friend. Very difficult to do at the levels you do them at.. Very impressive.

[@rustyshadesrestoration]

Thank you very much!

[@T_B]

Awwww HELL no!!! Do you hunt grizzly bears with a salad fork, too? Does anything intimidate you? That was amazing man! I've never seen one of these and CAN'T imagine tackling that project without a well-written manual, a 1-800 number support line to call, and a PTSD group meeting as an outlet! 🤣🤣🤣

[@rustyshadesrestoration]

Hahaha 😅 You made my day!

[@rubberswan]

I have done exactly the same restoration (without repainting) on the very similar Original Odhner 107. From what I can see, the Odhner is of a much higher quality. Nice job!

[@rustyshadesrestoration]

I'll check it out. I didn't know about Odhner ones. Thank you! 😀

[@berndbenninghoff9101]

So eine rechen Maschine habe ich auch noch zuhause 👍

[@davidc9012]

Un travail fantastique !!! Bravo 🤩🤩🤩🤩🤩🤩

[@rustyshadesrestoration]

Merci beaucoup! 🙂

[@alessandroalberto6431]

Smontare è facile, ce la farei anch'io, ma come fai poi a rimontare il tutto ? Come fai a ricordare ogni passaggio ? Chapeau !!! 🎩🎩🎩🎩🎩

[@jimothyfarthammer]

Are the videos also used to help you remember how to put things back together?

[@rustyshadesrestoration]

I take pictures and notes for that.

[@UkiwaCheetah]

В детстве я мечтал о таком, мне он казался очень интересной игрушкой. Но пятнадцать рублей - это было очень дорого для семьи простого советского инженера с тремя детьми.

[@tomswindler64]

Interesting piece,never seen one or heard of one,but it’s on the internet,so must be true.LOL.very nice work on something that is obviously quite intricate in the day.great video as always.just continue on doing what you do best and carry on.😎😎😎👍👍👍

[@rustyshadesrestoration]

Thank you very much! Glad you enjoyed it!

[@neccosan-of3ni]

🤩AMAZING👏👏👏✨✨

[@rustyshadesrestoration]

Glad you enjoyed it!

[@PGoodmanCOG]

You're a braver soul than I am.

[@rustyshadesrestoration]

Thanks for the compliment. 😄

[@michelszvetecz3243]

chapeau l'artiste 👍 très beau chalenge

[@belatoth3763]

Machined surfaces should be masked for painting to maintain seamless operation. During the assembly process a small amount of oil is needed to some places.

[@rutikuiwa7133]

Very good job 👍👍👍

[@rustyshadesrestoration]

Thanks! 🙂

[@albertoolmos21]

This machine should be used in a mechanical and computer engineering university. Students should know how to disassemble and assemble it and learn the names of the parts. I remember my time as a student, and later as a young electronic engineer, when we learned to thread and manufacture magnetic core memories, we could touch the bits!

[@АлексейАбызов-и9щ]

Арифмометр совсем не старинный. Это поздний экземпляр, скорее всего, 1970-е годы. Ручка- барашек была стальная, алюминиевая копия- это плохо, она недостаточно прочная. К сломанной ручке можно было приварить пластинку. Но в целом- хорошая работа. The adding machine is not at all antique. This is a late example, most likely from the 1970s. The knob handle was steel, the aluminum copy is bad, it is not strong enough. A plate could be welded to the broken handle. But overall, good job.

[@rustyshadesrestoration]

Thank you. That's hard aluminum 7050; it will survive more pressure than a welded piece. Cheers

[@WendysCove]

Brilliance just Brilliance

[@rustyshadesrestoration]

I'm glad you enjoyed it! 🙂

[@arungaddam64]

Very complex machine and restoration too.Genius who invented this machine.Where the machine was made?

[@rustyshadesrestoration]

This one is in Kursk, Russia, but as I understood from folks around here, it is a soviet copy of an American design.

[@riikkaheikkinen6268]

Nice to see! 👍👍 Great 👍!

[@rustyshadesrestoration]

Thank you for watching! 🙂

[@SimonUdd]

My grandparents had one of these on a shelf in their basement. I tried to use it a few times for fun but it was completely seized up

[@nickxyzt]

I am so impressed! You've also used melted iron to create a piece, identical to the broken one. Regarding the cleaning, could ypu please tell me what kind of solutions do you use?

[@rustyshadesrestoration]

Thank you! Usually, I'm using alcohol 95% if there is only dust and small amounts of grease. If there is a spot of rust I'm using a bit of WD 40.

[@nickxyzt]

​@@rustyshadesrestorationGreat! And the green solution is ammonium with dish washer? I am in the process of restoring a more simpler mechanical calculator - a Sumlock Plus.

[@rustyshadesrestoration]

Just dish washer. Oh, that's kinda cool. I wish you good luck with it!

[@nickxyzt]

@@rustyshadesrestoration I just want you to know that you've inspired me. What you did is an incredible job - now what I'm doing looks like baby play 😁

[@rustyshadesrestoration]

I'm happy that I could inspire you 😀 Enjoy!

[@stephanedelaval6525]

Great job ! But how does that work ?

[@rustyshadesrestoration]

I also would like to understand that. 😅 As I read, on the left side are displayed the rotations, and on the right side, down the "main display" where the numbers are added/divided, etc and up, just to dial the numbers. I didn't have time to play with it, but I will try again.

[@dogfini3488]

This is such a cool machine

[@TripleLSupreme]

Great video. I think it could've benefitted with annotations on what and why you were doing things at certain times.

[@rustyshadesrestoration]

I was late with everything, so this time I couldn't. Usually, I add annotations and translate them into many different languages. Cheers

[@rubenlopez1895]

I have a question. How do you decide to powder coat or paint an item? I noticed you painted here but you've powder coated on other items. Why?

[@rustyshadesrestoration]

Great question! There are two main reasons why I chose this method: First, the parts are too large to fit in the oven, so powder coating isn't an option. Second, I couldn't find the exact color I needed in powder form.

[@denislavggworks]

Great work man 👌🏻

[@rustyshadesrestoration]

Thank you! 👌

[@dzymslizzy3641]

What do you use as your blasting medium? Actual sand, or glass beads?

[@rustyshadesrestoration]

Hi. I use both, but I prefer glass beads because they don't create harmful dust like sand. I use sand only if the piece has a thick layer of rust or many layers of paint and rust because it is more efficient (cleaning is faster); the glass beads can do the job, too, but will take longer.

[@egLO]

Gute Arbeit Mann! Damit wurden früher die Zieldaten für Raketen beim Militär ausgerechnet (nach einem bestimmten Algorithmus in der Mechanik).

[@KillerBebe]

Watching this makes me think of the World War II enigma machine, I would love to see a refurbishing of one of those.

[@rustyshadesrestoration]

I would love to have one in my hands...

[@sergeantpeppers8858]

8:43 Did those foot pads become 3 degrees whiter and minty fresh? Asking for a friend.

[@rustyshadesrestoration]

Absolutely 💯

[@Fred_SPb]

Моя бабушка работала с таким. Но я так и не научился им пользоваться. Есть идеи что и куда на нем нужно крутить?

[@alexdubovik2119]

На корпусе специальные рисунки нанесены. На 21:27. Умножать и складывать вперёд по стрелке крутить. Вычитать и делить в обратную сторону.

[@windestruct]

It seems mine has that exact problem where I can't set the digits. I will try to wd-40 it and clean the number wheels.

[@AntonioCarlos-sj5fi]

Amazing!😮😮😮❤❤❤

[@JoseAugusto-fs8fi]

Não precisava desmontar a máquina, era só desmontar as partes que precisava de pintura e o restante era só lubrificar. 7:52

[@enestaskn7472]

What is the metal you melted?

[@rustyshadesrestoration]

Hard aluminium

[@ClaireChavannes]

How on Earth can you remember, where each part goes? Did you do like diagrams to remember what goes where? Or is it just registrated in your brain as you take it apart?

[@rustyshadesrestoration]

I pay a lot of attention while I disassembling. If I work daily on the project, I remember if I take a break (like a weekend), I still remember but only the parts. The screws and washers are a problem because they are too similar, so for those, I write down or take some pictures and add notes.

[@ClaireChavannes]

@@rustyshadesrestoration I see thanks for your answer ^^

[@05stones]

Amazing job

[@monteiroelcio9919]

Os genios que criaram deixaram um legado extraordinário. Seres super inteligentes ja passaram por essa terra sem querer ser estrelinhas.

[@jfhorselenberg7778]

Some 1 allready explained❤😊

[@andrejshamin1452]

Вау, советский арифрометр Феликс. Когда я был школьником в 70х, видел такую штуку в металломе. А теперь это антиквариат.😊

[@theskyehiker]

How the heck did you get that thing back together? Amazing work.

[@rustyshadesrestoration]

Thank you! 😀

[@williamkash7162]

Is that thing of Soviet provenance? I see it's stamped in what appears to be Cyrillic. Edit: A quick Google turned up a Wikipedia page for Odhner Arithmometer, originally manufactured in Russia beginning in the late 19th century and continuing until the 1960s. Yours appears to be based on that, if not in fact an actual Odhner device.

[@rustyshadesrestoration]

Yes, it is Russian, and it cost 15 rubles (written on the back) on the front is the name Felix.

[@ДмитрийЮрьевич-я8ч]

Советский механический вычислитель "Феликс-М", завод "Счётмаш", город Курск. Судя по заводскому номеру, год выпуска 1974-1978й. Вероятно, 1976й, но это не точно.....