Etching mixture

[henri]

Hello ,

I recently go through the different threads regarding etching old blades
and was very disappointed with the mixture I have prepared on a couple of old keris .

I have prepared a mixture with lime juice ( 14 pealed before taking the juice ) and Trioxide arsenic lab quality( 1 tea spoon ) with enough water to get half liter of magic potion .
1 week rest with a piece of steel wool ... and then a go for a test with plenty of sun light .

Could some " experts " give me the right proportion to use : lime juice + Trioxide arsenic + water (?) to make 1 litre .

Thanking you in advance for your help
Henri