Followed Chamfer Zone's blade tutorial
Made in 3ds max 2017 and substance painter
There is obvious problems i'm aware of in the model, opensubdiv was used for the high poly and the wrong edge was selected at the blade's sharpest point, resulting is the odd look at the edge. the problem at the bottom bumps closest to the handle need fixed but for now it helped create a more beat up worn look.
I'll be tempted to fix it later but for now it's best to move onto another tutorial and learn more.