Vintage Electric Hammer Drill Restoration and Conversion from 100V to 18V

This is a vintage electric hammer drill from Japan. Its power is only 330W.
I tried it, but it did not work because it broke the internal wiring. Fortunately, the wire did not touch the body, otherwise I would have been shocked. For safety, including modernization, I decided to convert this tool from electric to battery hammer drill powered by 18V Milwaukee battery.

You can watch this video by part
00:05 build alternative Milwaukee 18V battery
05:55 power tool disassembly
06:07 stuck chuck removal trick
08:57 field removal trick
09:34 label removal trick
10:22 chuck removal trick
12:22 rebuild armature structure
17:29 how to rewind the armature
20:42 how to check short circuit between the commutator bars and the body
20:49 how to check the armature commutator bars checking
21:13 how to glue the armature
21:29 how to balance the armature
22:38 install permanent magnet
23:42 mount the battery to the drill house
24:47 paint new color
25:27 rusty chuck restoration
26:36 assembly time
30:46 testing

Li-ion MILWAUKEE 9.0 Ah 20V 162Wh
- Voltage 18V ~ 20V
- Capacity 9Ah
- 15 cell of lithium-Ion 18650

Lithium-ion battery cell
- Brand model: LG INR18650HG2
- Standard capacity: 2800- 3000mAh
- Rated voltage: 3.6V
- Charging voltage: 4.2±0.05V
- Maximum continuous discharge current: 20A
- Discharge cut-off voltage: 2.5V
- Weight: Max.47.0g
- Size: Max.18.2×65.2 mm
- Charge and discharge times: 500 times

New DC 18V motor
- 12 commutator bars
- 12 stuck teeth armature
- 1.1 mm coil wire
- 10 times covers 4 stuck teeth

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

[nsbhagwat]

Gear Show rewinding the armature, thats more like it. Loved it.

[ЕвгенийШмыга]

I`m one of your biggest fans! Every video is a masterpiece. Really grateful you`ve inspired me to do a lot of my own projects.

[MetalRestorationBho]

This was excellent. You really went all out. Love the result. 🥰🥰🥰

[FranciscoRoura]

I love this, the voltage convertion was a master piece, It would be nicer a more elaborated adaptation to the battery and a cover for the exposed wires, consider 3d printing 👌

[hrishikeshjoshi]

I was feeling restless for some reasons this restoration video calm me down

[yeagerxp]

Very good restoration 👍👍👍Thank you for sharing. Be safe🇨🇦

[husseinali-kmug]

Good work, I think adding the left and right direction key is necessary for this work

[Gorphee]

It looks like the spot labeled '12v' on the circuit board wasn't soldered down like the rest. You can see it at 3:47

[nathkrupa]

What a wonderful restoration and you are very hard worker thanks for the sharing this video and nice restoration good work sir 👍👍.

[dumalaanjaneyulu]

You are genius to make these kind of things sir❤️❤️❤️

[Kamidashi]

14:30. When I saw these armature rings, I immediately remembered how we used to throw shaped transformer plates in childhood. They were in the form of the Russian letter "Ш", or "E". 😄

[alikasem]

Wow that amazing job and you have a great experience too

[pareshgajjar]

Excellent work with useful tools and techniques.

[pindrixsechon]

A masterpiece, in a masterclass, by the master ! Hey dude, you rock !!!!

[thomastechnical]

Thanks for change Table sheet Gear show Very Excellent work Brother

[George_Borman]

Лови плюс! Я бы оставил 220. Эта серебристая краска быстро сотрётся. Инструмент сделан на века !

[СергейЖилинский-щг]

Да. Хорошая и серьёзная проделана работа. Удачи вам. Ну и конечно лайк

[SC.k]

Awesome… very beautiful 👌
Fully watched 👍👍👍👍👍

[lopa]

Another great video and i like the sound! 👍

[TheGodsrighthandman]

Other than perhaps a bit better cable management from the handle to the battery, you've done an excellent job.
I'd have sleeved the wires into one flex, grommeted the hole they emerge from or, indeed, routed them out of the smaller hole @ 28:38 and blanked off the large aperture at the bottom.

Still, definitely a 9.5/10.