Heavy Duty Tap Wrench Restoration

Restoring a 50cm (20inch) steel tap wrench. Nice and big for tap between M9 and M27.
Found it at a local flea market for 8€. No visible maker mark but still a really nice piece, defenetly forth the price for me.
Index of operation and materials:
1:00 Electrolysis: water and sodium carbonate solution, parts connected to negative steel sacrificial anodes to positive of a 12V DC power supply (car battery charger). 3-4 hrs at 5amp.
1:37 De greasing jaws with mineral spirit
2:25 Polishing with steel brush wire
3:10 Cleaning burrs with needle file
4:14 Greasing jaws with spray bearing grease
4:46 Cleaning parts after electrolysis with brass wire brush
6:04 Drying parts immediately after electrolysis and coating with synthetic oil to prevent flash rust
5:58 Buffing with steel wool
7:35 Assembly with grease on threads and sliding surfaces
9:00 Testing with M16 tap (only cleaning existing threads on another project)
Thanks a lot for watching, I hope you liked the video!
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Видео Heavy Duty Tap Wrench Restoration канала Black Beard Projects