Vintage Angle Grinder Restoration Conversion 100V to 40V

This is a vintage angle grinder from Japan. I think it is a vintage makita products. It requires 110V, while my location is 220V. It requires earth wire, while my location don't have earth wire install. There are people died because of aluminum power tools in my country, because they know how to use it properly. There are a lot of new modern power tools available in market today, so these kinds of power tools are abandoned. For me, I can take benefit from it by modify it in to this way. It not so powerful like before, but I can use it for some purposes.
Don't test these abandoned power tools, It can cause danger!
The following are cases encountered during the restoration:
- Wrong soldering in Angle grinder • Shocking Angle Grinder...
- Corrupt wires can come in contact with the power tool body • Vintage Electric Hamme...
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

[@xtender5]

That was a really cool demonstration of how electric motors work.

[@RubenKelevra]

It's basically just two sticks of charcoal running angry pixies in some circles :)

[@xtender5]

@@RubenKelevra I always thought that was what it was. Happy I finally got some confirmation. 😁

[@stumarsan]

The grinder had so many bearings!😅 Awesome job as always. So satisfying to see something that looks like it belongs in the trash given a new life.

[@Ghost-fc3kc]

Your channel is underrated man, amazing work you're doing here.

[@veyselkalkan384]

This is the real return. Congratulations.

[@memutu]

Nice job, putting grease with the spoon was a nice touch 😂. I use a big seringe from the vet pharmacy 😅. Keep up the good work! BTW, I think this was one of the best restoration jobs you did!

[@sarigiannis2002]

I love the humorous tone you added in your video!

[@DomCristante]

the fuck are you on about?

[@CrustyRestorations]

Interesting to see the motor tricks, fabulous restoration job 👍👍

[@MateO__123abc]

I don't know how much trust you would have in that 3d printed piece. If you work with the tool a little longer to heat up the tool, that piece would most likely melt. That old coil seemed much more resilient.

[@Gary.Poltava]

Great job, congratulations🎉

[@dwyanejetersr6470]

Although I may not understand all that you do it's a pleasure to watch a consoment professional like you work, I watch your vids for hours. Thank you for your skill, patience & expertiese.

[@weedwacker1716]

Another great video pops up. I always admire not only your technical ability but also your ability to create a fun presentation. This device takes my past to my childhood when I worked as a slave to my grandfather using Older devices like this one. My only complaint about your work is the painting work you do. It's amazing, but I want to see this device polished like new glass and coated with clear paint. But that's just me, it still looks good. វីដេអូដ៏អស្ចារ្យមួយទៀតលេចឡើង។ ខ្ញុំតែងតែកោតសរសើរមិនត្រឹមតែសមត្ថភាពបច្ចេកទេសរបស់អ្នកប៉ុណ្ណោះទេ ថែមទាំងសមត្ថភាពរបស់អ្នកក្នុងការបង្កើតបទបង្ហាញដ៏រីករាយផងដែរ។ ឧបករណ៍​នេះ​យក​អតីតកាល​របស់​ខ្ញុំ​ទៅ​កាន់​កុមារភាព​របស់​ខ្ញុំ​នៅ​ពេល​ដែល​ខ្ញុំ​ធ្វើ​ការ​ជា​ទាសករ​របស់​ជីតា​របស់​ខ្ញុំ​ដោយ​ប្រើ​ឧបករណ៍​ចាស់​ដូច​ឧបករណ៍​នេះ។ ការត្អូញត្អែរតែមួយគត់របស់ខ្ញុំអំពីការងាររបស់អ្នកគឺការងារគំនូរដែលអ្នកធ្វើ។ វាអស្ចារ្យណាស់ ប៉ុន្តែខ្ញុំចង់ឃើញឧបករណ៍នេះរលោងដូចកញ្ចក់ដូចថ្មី ហើយស្រោបដោយថ្នាំលាបច្បាស់។ ប៉ុន្តែនោះគ្រាន់តែជាខ្ញុំ វានៅតែមើលទៅល្អ។

[@ZenithWalker]

Impressive work !

[@brettjohnson9918]

i love your videos, i can't wait to have a space to try to do these kinds of projects as well. keep up the good work!

[@gear_show]

I wish you can do it soon! Good luck!

[@user-xd9cz4nu2q]

بارك الله بيك الله ايكثر من امثالك ان شاء الله

[@banny123456]

That AC main switch will not last DC current switching. That will be fun when shorted permanently.

[@vinceianni4026]

Good job mister beautifully done

[@ramonesteban5473]

Increíble trabajo , como siempre . Muchas gracias por compartir , un saludo.

[@user-rj2pm8nu5t]

Прекрасная работа. Однозначно лайк. Удачи в делах, исполнения желаний и побольше интересных видео.

[@user-xd9cz4nu2q]

🎉🎉🎉🎉😊

[@MASI_forging]

WHta a beautiful restoration 👏👏

[@SpicySpleen]

your a wizard! great work!

[@Roker650]

Kawał dobrej roboty.

[@texgowing7359]

Wow, very impressive convertion👍good job👏👏👏👏👏👏👏🙄

[@marianpintilie7799]

Master and teacher returns with new awesome video with impressive restoration...Grettings and love from Romania 🇷🇴🇷🇴🇷🇴

[@edeforelle664]

Excellent work and result! Thank you for sharing!!! Greetings from Germany Carsten

[@aunabreslingaming3279]

This drove me nuts for 3 years cuz I didn't know what I was searching for and I didn't have people around me that could help this conversion that you're showing is exactly that crap that drove me nuts for like 3 years

[@user-jb4pv5fh1s]

Excellent job

[@gear_show]

Thank you very much!

[@djevo3441]

Amazing job my friend congratulations 👏🎉🎉🎉👏🎉👏🎉

[@arunparechirayil2167]

My country is India,I am your fan 😊 your restoration is nice work. I am waiting next video.

[@lordlupusrex3781]

How does it know when the voltage is too low? Lithium does not like being fully drained...

[@daltonmarchand2755]

that is amazing anad i love it top noch my dude

[@alexandres8846]

good job my friend.. and as I always say brush motors are the best!!

[@hectormendoza4158]

Tienes razón, los motores a sepillo son mejores, asta reparables 100% ahora los motores bruslhes son desechables no tienen reparación solo remplazo de conjunto electrónico completo y sale mas caro, como en el caso del taladro de impacto Dewalt dcf 887 es una locura se apaga y no prende más queda totalmente muerto y el conjunto electrónico completo es caro, me duró un año apenas uno original me dejó fue loco lo caros que son y salen así de delicados la verdad ahora prefiero los modelos anteriores con motores a cepillo o escobillas.

[@SloppyMechanics]

at 4:00 I thought the massive locking pliers were comedic relief I cant believe you were able to get a good pinch on that screw head hahaha

[@CoolIdeasDIY-qv1nz]

Ótimo trabalho, amigo👈👍

[@willyanborges8525]

Ficou sem duvidas incrível

[@Chucthihien]

very good video

[@user-kt2hb8xr3p]

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

[@gear_show]

You are very welcome. Thank you!

[@FerSniper]

Лучший, спасибо за потраченное время!!!

[@PVZBlover]

Yet again with the Ingco Tools inspired color scheme

[@gear_show]

Yes, Ingco and Dewalt.

[@MichaelVx]

That is real ART to me

[@mistermagnifico]

I am more amazed at the strength of the 3D spacer

[@nathkrupa3463]

You saved hundreds of tools life great work bro😊😊

[@carrestore]

good job

[@TimoBurian]

You need a sandblaster😊 Good work! Keep up the good

[@lucasdcofficial]

Amazing ❤work

[@dropkick127]

Well done

[@Varmadheeraj6]

Don't skip 3D printer

[@gear_show]

Yes, thank you for letting me know. I'm afraid this video is too long.

[@-startx-]

Skip

[@infinixgaming_0]

Too much heat can melt it.

[@hectormendoza4158]

Exelente video quedo muy bueno el trabajo saludos desde Colombia

[@hectormendoza4158]

​@@gear_showla verdad no importa que sea largo el vídeo, se aprende mucho, yo me preguntaba dónde consiguio la base de la batería para que quede todo perfecto no contaba con que hay que tener una impresora 3d para que quede todo nítido.

[@JeremyTHolt]

Very cool resto and mod. Although I am not sure I understand the what/how for the motor section.

[@edigvn]

Otro video de esos, con la calidad indiscutible de Gear Show ''Congratulatios'' me quedo con esta frase ''Para mí, puedo aprovecharlo modificándolo de esta manera. No es tan poderoso como antes, pero puedo usarlo para algunos propósitos'' y sobre todo que lo volviste seguro por material aluminio que le recubre.

[@MartGrag-qp1ps]

I wonder how this wizard worked with an internal winding without an external one? Miracles of modern editing.👍

[@WotMinecraftMaster]

He used magnets, so there's no need for external winding

[@VacMaster1991]

Very safe intro😅. Loved the video though

[@yufadanpratama4011]

Pokokny mantap deh semua jdi buat klu dibuat rangkaian DC

[@nessim.liamani]

Nice job! Can we really go from 100 to 40 volts without any catch?

[@zach3664]

when vice grips make the ultimate clutch save.

[@salvagedsteelstudio]

Awesome, but I would have changed the chuck so it's compatible with the normal flap/cutting-discs.

[@TheWestlaker]

First time I saw someone holding a pair of brushes like that, while they are plugged in😮

[@Sharpless2]

Since its battery powered now, it was DC. 40V DC is not enough to shock you, you may feel a very very slight tickle but thats it.

[@JTshoot]

That's a cold solder joint right there

[@-magdygomha6130]

Perfect

[@lamriutv]

Wow, bạn khá chuyên nghiệp đấy

[@giannidigirolamo8868]

Great restoration. I personally didn’t like the solution for the battery holder…not as fancy as the rest of the painting.

[@holzwurm_hd7029]

19:15 that is likely a cold Solder joint. Please get yourself a higher wattage soldering iron.

[@juancarlosarbiza4018]

Impecable 💪

[@alexiswilmes8090]

Hi, great restoration and great video. I just wonder how did you choose the magnets for de DC motor and why? From a reliability aspect, magnets suffer from high temperatures and i think that it could be a mistake even if the efficiency is improve considering the environement. Howerver it works very nice. Nice jobs

[@adinpacan]

Awesome

[@Chris-cz6hn]

This one would work just fine for me in the US.

[@G_W_G_]

놀랍다 놀라워... 승압을 하지 않아도 원래 용도대로 사용이 가능하다는게 너무 신기하다 그럼 전압이 낮아졌으니 기존대비 rpm같은건 아무래도 줄어들었겠죠?

[@BigTCars]

It seems fitting that he painted it Chicago Electric orange. I get this guy isn't American. So he probably doesn't know what Harbor Freight is, but that's the best part for me. LMAO Great hack. 10/10

[@nelchan2421]

RPM test with 18v and 42v?

[@hayreddinguzel6630]

I enjoy watching and following your videos. Where do you supply/buy the empty battery boxes and equipment you use?

[@Ghost-fc3kc]

Aliexpress

[@sokiyoutuber5023]

hello friend, I've been following you for a long time, that is, you and your work on the channel. Would you like to record all your tools that you have modified, repaired and made. I'm a big fan of yours. Greetings from Serbia.

[@Duda286]

im just a bit suspicious the actual RPM of it got lower due to the battery arrangement, partly because of the lower voltage but maybe also because of some specific electromagnetic issues with Brush DC motors that usually do not allow them to spin real real fast, but since this is a very big angle grinder maybe it had only 6000rpm anyway... But yea... Very fast spinning dc motors are brushless, that is, basically triphase motors with a controller

[@thetomster7625]

man... it looked so nice before you added the modification

[@RefurbishmentKJ]

Ask a question Can the rotor of an AC motor be driven directly by DC?

[@gear_show]

The armature is universal.

[@CrudeBuster]

given the size it's normally universal so it can be fed by a DC generator in a worplace offgrid.

[@nelchan2421]

23:17 Always remember not to charge the battery after it has been used and discharged. sorry for my bad english

[@almatalmat5482]

😮 я так и не понял как можно к 48 Вольт подключить обмотку не перематывая на 220😮😮😮 и что она будет работать как заводская😮🤔😯🤷🛠️😨

[@larrykelly2838]

That is a heavy duty grinder.

[@gear_show]

Yes, it is.

[@Kmnri]

turned out great, i have a question, what do you do with all the tools you restore? keep in collection? sell? give friends?

[@gear_show]

Everything, keep, give, sell..etc

[@thebeast7690]

@@gear_show do you sell it online ?

[@user-tu6tz7bq6n]

درود..دست خوش مردو..ای ولابه هنرت..کیف کردیم.دم شموگرم کاکو🎉🎉🎉

[@Alex_NL]

could heat buildup be an issue for the 3d printed plastick ?

[@BahBahTheSheep]

what disc attachments at 6:30 are you using? the wire brush one for the grinder and the pad one

[@alrik359]

Didn't know they used to use peanut butter for grease.

[@CrudeBuster]

pure nutella

[@alrik359]

@HandToolRescue favorite grease.

[@user-wy4ps1gk4d]

Вы там вообще бешеные :) Лютую дичь творите. Нравится.

[@gear_show]

Да, возможно, хаха :D

[@mauricioclaudio3510]

Muito bom, por favor me esclareça uma dúvida , é só ligar a bateria no interruptor e ligar ? Não tem nada de placa , resistor , ou alguma peça eletrônica ?

[@MrKimgraesdal]

Is it only you on the channel, and what country are you from 😊

[@nathkrupa3463]

Please make a video on industrial types metal cutting machine restoration

[@AKAtheA]

how long did the commutator and switch last? Also, why is the vice so wobbly?

Great work again. Where do you buy your charge boxes from?

[@gear_show]

I bought it form China.

@@gear_show Is it available online? Because I want to buy for Makita 40V series but I don't know where to buy. I appreciate your suggestions

[@snarkbaited]

18:52 that looks incredibly dangerous

[@davidepiccini9254]

Wow

[@codh3gro]

Ive never seen anyone choose a worse color on purpose

[@akgamingyt9903]

Op sir

[@quocthanhtran5199]

“It’s perfect”

[@electronicsgyan.902]

Can you show your work Shop and your tool please sir ❤

[@donalexey]

Why did you put permanent magnets? To not lose voltage on stator?

[@tanaseav]

You took away it's bite, no more umf, no cohones, loud bark, no bite, old man with asthma 🤣🤣🤣🤣

[@don_zulo]

Anybody could explain what he did with the brushes connected to battery?

[@kintag4459]

جـزاك الله خيرا

[@gear_show]

Thank you!

[@FunnyManNsk]

Очень хорошо! Но серебристую пластину надо было хотя-бы покрасить, а то она блестит и не гармонирует.

[@REVY01]

Can somebody explain to me what the benefits are of making this lower voltage, wouldn't this mod make the grinder perform worse under heavy load?

It will probably be about 25% original power, and battery won't last more than 10 minutes for heavy cutting.

[@DM2YT]

How many hours of backup will it provide?

[@annanmanpaul101]

dame that sounded like a plane engine

[@Akc64]

At preview I think it working without magnet 😂

[@DBurgur]

6:03 Tools you need to restore a grinder: grinder