Old Rusty Pocket Knife Restoration

Hello folks! Today I want to show you how I restored old rusty pocket knife. I got it from my old friend. He is a fisherman and this knife he gives me for restoration. This tool is handy at fishing. Also, this is old vintage pocket knife, the still is very good but very rusty. So, First of all, I removed old handle from knife and after that I use electrolysis. Then in process I used aswell few sandpapers with different gradation (80, 120, 320, 420, 500, 600, 1500 and 2000). Knife handle I made from plastic,