Keris lurus/sepokal Bugis for comment

[jagabuwana]

Originally Posted by Roland_M

Ferric chloride on antique blades is difficult! Some users have very good results, my results with low concentrated FeC-etchants are always bad. FeC causes pitting on my blades and create a nasty surface. A good alternative is Iron III Sulfate with a concentration between 10 and 20%. Iron III Sulfate is a very weak etchant and it is almost impossible to ruin a blade with that etchant.


Roland

Interesting recommendation - thank you Roland. Have you personally etched or stained any old keris that contained nickel with Iron III Sulfate? If so, I'd be very grateful if you had any photos or examples of this work.

I'd be willing to give it a try, but as you might understand, I would first like to confirm if it is an appropriate substance for a blade of this age and composition.