Perfect mirror finish....again

K

knifemaniac

Joined
Jan 19, 2007
Messages
288
Hi there. With my new grinder and belts I reached this level of finish - up to X5 norax.

Mirror%20X5.JPG

Mirror%20X5%202.JPG


But I still can see the direction after the buffing. I wonder If I hand rub the blade lenghtwise with 2000 grit water sandpaper and than go buffing will the direction lines go away?
The grind after HT was 100 zirc, 100x, 65x,45x,16x,5x noraxes and than buff with green compound on a cloth wheel on 2800rpm.
Do I need more buffing with another compound or handsanding with 2000.
 
I would guess so. I just bought some 2000 grit, and it's pretty darn fine. If that wont do it, nothing will.
 
The black compounds are more aggressive and a sewn wheel is also . Buff against the lines not with them .
 
I'm guessing the visible lines are X scratches. You may wish to add an X to your sequence. Also, changing directions between grits helps. Of course, it's hard to grind lengthwise near a plunge cut. In the finer grits (which remove little is any stock), a small wheel can be helpful to get at least close to the plunge with a lengthwise scratch pattern.

What steel are you using? There are some, like CPMS30V, that are simply not conducive to a mirror finish.

What buffing compound are you using and from what manufacturer. There is green and there are other that are also green. They perform vastly differently.

Not saying it's any of those, but trying to offer some things to consider.

Rob!
 
I buff in all directions, parallel to the scratches, 90 degrees to the scratches and 45 degrees in both directions. I had the same problem and was told to do this to resolve it. Worked for me.

I use green and white rouge and find that the sewn white wheels work the best. Steve Johnson uses the treated loose yellow wheels with good success, but I can't make those go quite right for me.
 
Thanks, to all. :)
Well, the steel is a heaven to polish. It is DIN 1.4116. About 56 Rockwell. The green compound is for hardened steels. And I buff lenghtwise and 45 deg also, but....
Maybe in 200-300 knives I will figure it out. :rolleyes: I have to find black compound and to try with fine sandpaper.
Thanks again.
 
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