Cord to Cordless Circular Saw Conversion 220V to 20V [Rewinding]

Rewinding Information
- Copper wire 0.95 mm
- 12 Commutator bar
- 12 Stack teeth armature
- 10 turns for each commutation bar
Dc motor information
- Voltage 20V to 40V
- No-load current 6.5A (20V) 130W
- Start current 18A (20V) 360W
- Motorbike starter permanent magnet part
Key moments
00:04 circular saw disassembly
00:42 circular saw gear box Disassembly
01:14 circular saw motor removal
01:46 circular saw all parts show
01:57 plastic parts cleaning
02:16 armature disassembly
03:02 old commutator bar removal
03:20 old coil removal
03:44 new commutator bar Installation
03:55 armature rewinding process
07:46 armature short circuit checking
07:52 commutator bar continuity checking
08:12 armature gluing
09:33 armature balancing
11:09 permanent magnet installation
12:27 first test new DC motor with 20V
12:36 battery adapter installation
13:50 metal parts painting
14:31 gearbox installation
16:14 finish look
16:20 new circular saw weight
16:30 rpm measurement
16:40 power measurement
17:03 cordless circular saw cutting test
I hope you find this video useful and enjoy it!
Furthermore, I am happy to receive feedback, suggestions to improve myself.
!!! I'm sorry for the mistake if I did in this video !!!
Thank you very much for choosing to watch my video!
Have a nice day
Gear Show

[@saeklin]

Reminds me of the video where someone makes a chicken sandwich completely from scratch and the whole process costs them a thousand bucks.

[@elijahscreationsinc5952]

Sounds like a Nile red video

[@abutohan]

​@@elijahscreationsinc5952at least Nigel got a cookie.

[@5skdm]

lol htme

[@nomusicrc]

This was a perfect video in every way no loud beginning no music while working no explanation just you playing with your awesome tools

[@bhhenry]

Ladies and Gentlemen, gather around, gather around! Have you ever seen anything this electrifying? No, you haven't! I'm talkin' turning a corded circular saw into a cordless wonder! This is better than a two-for-one deal at Saul Goodman & Associates! I mean, come on! 220V to 20V? You're not just bending the laws of physics, you're breaking 'em, and then rewriting 'em! That's what I call real legal wizardry, my friend. If you ever need a patent for that magnificent invention, you better call Saul, baby! We're talkin' intellectual property! We're talkin' making you the next big thing since, I don't know, the invention of the wheel or something! Keep this high-voltage content coming, Gear Show! You're makin' history here!

[@cahyanto3893]

I'm from Indonesia. Always watch this channel. This is very interesting to me. , I learn from this channel. Thanks

[@Ijamtlageren]

Jember Jatim hadir bolo 🤝

[@cahyanto3893]

@@Ijamtlageren wah ada tmn nya. Trima kasih mas bro. Slam ngopi

[@Ijamtlageren]

​@@cahyanto3893siap maszeh, dari mana?

[@cahyanto3893]

@@Ijamtlageren cilacap jateng maseh. Tp stay di jakarta

[@capilarpro]

​@@cahyanto3893salam dari Batang jateng

[@HyperionBadger]

It would have been nice if you showed the wiring. That’s the one part of this that was perhaps the most pertinent to the title of the video.

[@johnbradford9235]

Excellent little conversion Mr. Gear Show, as always. Great to watch you work, and also great to know that tool has a whole new lease of a way more convenient life for someone 👍👍👍. 😎

[@alo_xeno]

As usual you make amazing restoration videos. And to be honest, there are many restoration ideas that I can learn from your videos. stay healthy and keep working.

[@arzya13]

Вот только надо было показать результат на 50 мм доске в продольном распиле

[@Eden_M]

Yup, doesn't stall under load, great job!

[@alfanazzamcraft]

I really like your method, very quality, greetings from Indonesia,🖐️🇮🇩🙏👍❤️❤️❤️❤️

[@franciscocarlosfabri3075]

🤝🏻🤜🏻🤛🏻🇧🇷 Restauração de qualidade, principalmente convertendo de 220 v para 20 v a bateria, parabéns.

[@tv8731]

LIKE...141 Ito ay isang produkto na gusto ko ring magkaroon. Salamat sa magandang impormasyon

[@TheDeal4412]

I think Ill just buy one...buy I appreciate the level of ingenuity here.

[@SeanBZA]

Rotors, my least favourite part of rewinding motors. Would suggest getting some high copper brushes though, as the plain carbon ones will burn out fast, and probably are already robbing you of a good chunk of power there, and thus RPM. Could also have wound it using a shunt field, original windings would have done well enough, though of course using heavier wire and series would make it a lot more powerful.

[@InsaneX2005]

Согласен, для двигателей постоянного тока нужно использовать только медно-графитовые щётки.

[@vinceianni4026]

Hello mister beautiful restoration beautifully converted well done

[@FerSniper]

Лучший, спасибо за потраченное время!!!

[@MrMeltdown]

First time of watched someone hand wind a motor…. Sub granted.

[@bad_kojima]

Удивительно, но литий-ионного аккумулятора достаточно для работы инструмента разработанного для 220 вольт переменного тока. Гений

[@dmitrykolevatih4692]

Again Win!!! Beautiful work!!!

[@marianpintilie7799]

Mr. Gear Show is always a good restorer and satisfying because always every time a new video comes out he does an incredibly amazing and interesting job....Be safe and have all you want...Love your grade 10 videos🙏🙏❤️❤️🇷🇴🇷🇴😘😘

[@gear_show]

Thank you! I'm glad to hear that.

[@papaspeleo]

@@gear_showwere can i learn to calculate how to rewind a motor. Many thanks for the information. All the best

[@Pravdinkov]

From a technical point of view, everything is fine, bravo, but an important detail, if you plan to use it, then do not forget to integrate protective electronics so that when biting the material you don’t burn everything to hell, and 7000 rpm is too much

[@woopsserg]

From technical point of view it's totally impractical.

[@locationedrian2944]

This is more effective than a regular circular saw 💪🇵🇭

[@nguyenhai7853]

Bạn có kỹ năng rất tốt, công cụ đầy đủ. Như hổ mọc cánh 😁😎

[@drews0matt]

Cool to see the transformation! I think an explanation would add a lot to the video and help people understand what they are seeing

[@yeagerxp]

Excellent restoration 👍👍👍Thank you for sharing. Be safe🇨🇦

[@gear_show]

You're welcome, thank you!

[@KeyboardBuster]

Fuck canada

[@Kosay_1998]

You are really smart and creative in your work. As always, I enjoyed this video❤  ❤

[@gear_show]

Thank you! I'm glad you enjoyed this video.

[@bekim137]

I recommend you to use brushes with copper mixed with carbon for low voltage to get the best performance

[@gear_show]

Okay, thank you for sharing!

[@InsaneX2005]

Согласен, для двигателей постоянного тока нужно использовать только медно-графитовые щётки

[@user-kt2hb8xr3p]

thank you teacher❤❤❤ Great job, thank you brother. You are so talented

[@k4rec4]

Amazing! If I had a hidraulic press and a lathe, I would try to do it.

[@joelrodriguez6123]

Look at the cute little torche 😂

[@kaspersit8274]

Закрыть обдув угол, гениально 😂

[@user-sg8fq9qy8b]

Тоже заметил,согласен,сомнительное местоположение

[@waynewong161]

真系曬勵

[@larrykelly2838]

Nice conversion

[@Byvalov]

Алюминиевый провод обмотки? 😢

[@1misticointolerante]

Excelente edición de vídeos.....sigue así.....es entretenido ver tu canal.....

[@youtubetv7000]

SUPER

[@jsaurman]

Why does the motor need to be rewound? Couldn't the existing windings be used? Or would they not produce enough torque with only 18v input since they were designed for much more?

[@mr.renovator4859]

Laws of electricity speak against 😅👷🏻‍♂️

[@masterQ20]

*Thank you for a very good video. Valuable leason learned!* 👍❤😊

[@gear_show]

My pleasure, I'm glad you learn something from this video.

[@Billymapo]

Amazing conversion and restoration. Would have been perfect to see a custom 3d designed and printed support for the battery module, but still, that's impressive!

[@Shanidar1]

Yeah, that battery bracket was a total let down. Would've been better to just epoxy the battery base down.

[@gusser2121]

We don't get Makita's less expensive line in North America. I'm surprised that they would be in Japan. I thought they were only for less affluent markets. How is there quality?

[@Patrick_Bateman_Vice_President]

Here, in the countries of Eastern Europe (CIS), the Makita Tool is a common noun of the word "Quality tool"

[@carrestore]

Excellent restoration

[@thuanle-vt2lf]

Chúc bạn và gia đình hạnh phúc

[@quocthanhtran5199]

“It’s perfect”

[@khalilrabah2237]

Jolie travail

[@Shimaneko227]

どこの国のメーカーかよくわからん交流式丸ノコをバッテリー式に改造するという大胆な発想。コイルを巻き直すという手間をかけて、無事完成にこぎつけた。なぜかブレードはマキタ製を装着した。

[@alpeshpardhi9572]

I am happy

[@leighsimmons6092]

Great job I appreciate your skills , some people have time , most people just buy them

[@Gary.Poltava]

Thanks for sharing!

[@M24nopparat]

งานดี

[@cahyanto3893]

If the starter coil just burns out, why does it have to be replaced? Then the rotor is removed from the magnet (sanded) then changed to coil rotor?. Please explain master 🙏

[@gear_show]

This is an experiment project. You're right if you want it to be restored.

[@cahyanto3893]

@gear_show thanks , great job guys .

[@AkashSingh-yc3zm]

Bro Can you give me Formula of Armature Winding

[@kitsurubami]

Did you check to see if the old copper windings were bad before redoing it? I'm ignorant and am seeking understanding.

[@mr.renovator4859]

1/10 Voltage result in windings carrying 10 times the current 🤔

[@user-tm7ij9yg3i]

Отличная переделка.

[@grzegorzgaczewski5227]

Super 👍👏

[@TanvirKabir0461]

You deserve a "LIKE" 👍

[@patrickmorrissey2271]

Great job!

[@TundeEszlari]

You are a very good KZbinr, can I get a comment heart?❤

[@mar-tin702]

Yes of course

[@azizmakaoui5218]

An artist in the sense of the word

[@Unbekannt696]

why do you use wood in the engine? can't that start to burn with harder use of the machine?

[@techytools5668]

how long this 18v 4amp hour batery can run this.

[@JoJoTavern]

😂😂Someone asks this guy what brand is that?? My own custom brand😂

[@trangsiphuoc]

Có bán lại sản phẩm ko a 😊😊

[@MASI_forging]

Thank you for sharing this great video 🙂🙂

[@gerrylormr8299]

Amazing conversion.

[@davidegan2779]

Very intuitive but cost effects everything I'd suggest just buying a cordless one good vid though

[@сколько]

Закинул под дождь чтобы потом его отремонтировать гений

[@personaldevelopmentk1982]

dude you are amazing. I know because after I stripped this down I would just walk away...thats that lol...nice

[@gear_show]

Thank you!

[@CrustyRestorations]

Amazing restoration job, that took some work 👍👍

[@nathkrupa3463]

Great work sir you are awesome Thanks for sharing 😊

[@gear_show]

You're welcome, thank you!

[@dogcreek-customs5168]

The fact this is 110 volts makes that title of the video sound so much more credible. lmao

[@jorismk1]

Well, with all respect, 6 amps at 20V is 120 watts. 120 watts just to spin a blade seems like a lot... Are you sure the brush angle corresponds to the magnet angle?

[@cosmodesant]

не ,с балончика покрасить, это конечно уровень 👍начало отличное, но потом полуляхство

[@gear_show]

Извините, спасибо, что поделились!

[@cosmodesant]

@@gear_show я не обесцениваю ваш труд, вы молодец! просто балончик быстро стирается, лучше всего порошковая краска, а алюминиевые части просто полирнуть! а то вы столько труда вложили, а потом этот балончик всё испортит

[@prasadvn524]

Loved the conversion.

[@ShawnyT68]

Do a shop tour

[@adamnapolitano432]

Imagine what you could build if you had a 3D printer? XD

[@viktorshutov]

Awesome. True engineering.

[@troyjackson3164]

Ryobi and makita and dewalt already make battery powered saws but good work doing it.

[@karya_mandar99]

Dapat ilmu baru

[@user-el5vm4tj7t]

Впервые вижу такую реставрацию с петеделкой. Только вы осмелелись закесть в медную катушку да ещё и в аккумуляторную пилу переделать

[@McCree_XR]

This is very cool. Jewelry work!

[@victimovtalent6036]

yeah bamboo sticks👍🙂

[@michaell6645]

Am I the only 1 waiting for him to insert his Kyber Crystal at one point in middle?

[@tukangkayutaryosidomulyo3503]

🙏ikut nyimak & belajar,,,🙏👍👍👍❤️❤️❤️

[@gear_show]

Thank you!

[@wgalencar22]

Qual produto usou para a limpeza? What product did you use to clean?

[@warwarneverchanges4937]

Came in here thinking hes going to rework the frame pop in a chip for a battery and done, but when the lathe came out it wa over lol

[@user-kl2es7qg4s]

Красавчик, но в условиях дома, ценник будет космическим, фторопласт, статор , аккумулятор , якорь перемотка переделка, но руки у вас однозначно золотые,

[@alexandrersst5633]

Does Makita Battery Have BMS?

[@cabosabyarce6070]

Excelente me voló la cabeza..no había visto un vídeo como ese..10

[@ezequielsilva2709]

Bom trabalho 👏👏

[@viasevenvai]

epic. great stuff. saw looks like it cuts terribly though.

[@user-rj2pm8nu5t]

как всегда хорошая работа. вопрос к вам. как вы знаете сколько мотать на якорь витков и диаметр провода, при переделке с 220 вольт на 12 вольт?

[@tatashie]

Физика. Всё можно рассчитать по формулам, да и к тому же, по этой теме довольно много материалов в интернете, главное поискать.

[@david.vieiraocurioso4917]

Excellent. Congratulations!

[@gear_show]

Thank you very much!

[@Saber_Matrix]

👍💯

[@tommasi3]

you genius, and repair bikes

[@Weldingblitar]

❤❤❤🎉🎉🎉

[@sebastiaankuipers9121]

Hey, totall noob here, but how do you calculate how many bars the commutator need when converting from 220v to 20v and how many turns you need?

[@NolaGal2601]

I really expected the battery pack to be in the way.

[@alanchan8265]

This calls vintage

[@user-00016]

Потрясающе!

[@user-cm3ft1sz8p]

I would like to watch a conversion into a Brushless motor.