A worthy kattar for comment

Ann Feuerbach · 23rd March 2005, 03:37 PM

Yes, nital and ferric chloride will give a different etch. Other factors which need to be considered are: if you want to darken the globular cementite or the matrix, which basically can be ferrite or pearlite. Sort of a negative or positive effect, dpending which one you want to darken. I have also heard the Worstershire sauce works well. And yes, any additional trace elements can also effect the pattern.
So I have been told.. when they re etch Japanese blades, they first do an elemental map of the blade to see what elements are where (phosphorus, etc). Then they choose the etchant to bring out the best pattern.

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23rd March 2005, 03:37 PM	#22
Ann Feuerbach Member Join Date: Feb 2005 Posts: 133	Yes, nital and ferric chloride will give a different etch. Other factors which need to be considered are: if you want to darken the globular cementite or the matrix, which basically can be ferrite or pearlite. Sort of a negative or positive effect, dpending which one you want to darken. I have also heard the Worstershire sauce works well. And yes, any additional trace elements can also effect the pattern. So I have been told.. when they re etch Japanese blades, they first do an elemental map of the blade to see what elements are where (phosphorus, etc). Then they choose the etchant to bring out the best pattern.