Thread: How would you proceed?

This Hilger & Sons model 2250 has a nice, very deep etch on the blade; here's what it looked like before and after a light cleaning:

I'd like to address the corrosion ("devil's spit"?) and pitting, while preserving as much of the etch as possible.

What would you do?

I wouldn't get much more aggressive, I would probably try very fine synthetic steel wool pads and metal polish

I would use lapping film and wash it often. I wrap the film tightly around a round object. That is because the film does not sink into a deep etch. It will hit only the high spots. And washing every few strokes will keep swarf from abrading the surface edges of the etching.
I have done this and it is good for deeply etched blades. Sparingly it will work for a shallow etch. It will not remove pitting within the etching.
I have used a dental pick to get some of the pitting clean.
YMMV as always!
~Richard

Vibrating tumbler.

Originally Posted by Chevhead

Vibrating tumbler.

This is the best way

fill the etch with nail polish then use a hard backed fine sanding grit
then clean up with acetone to leave the etching