ok 300 is a good grit to heat treat with. make sure all your scracth lines are lateral. even on top and the cutting edge. after heat treat and temper go back with 300 lateral. after all scale is off make sure all the deep scrathes are out. then go to 400 grit vertical lines get it to where all of the lateral scracthes are out even the tiny ones. then go back lateral with 500 grit till all the vertical scrathes are out then go vertical with 600 nnow when you get all the 500 grit scracthes out with the 600 going vertical go lateral with the with 600 gritt till its all even and scrathes are straight. that should be pretty good on the blades. i am not that great with handles and/or gaurds yet so i hope someelse will pick that up. hope this helps