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 You can find the battery case at t.ly/0R8- 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