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SIGP2101 · 12-09-2008, 03:34 PM

Selenic acid H2SeO4 ----------- 10 parts
Copper (II) sulfate CuSO4 ---- 10 parts
Distilled water ------------------- 1000 parts

After a good pickling of the metal part put the part in the solution described above.
Part will start changing the color from the yellow to the dark blue depending on how long you keep the part in the solution. Just take the part at the desired color and wash it in the distilled water. Worm up and apply olive oil.

There you go, I just revealed more than 300 years old recipe on the net. One of the trade secrets.

12-09-2008, 03:34 PM	#3
SIGP2101 User Join Date: Sep 2006 Location: Canada Posts: 256 Thanks: 74 Thanked 67 Times in 32 Posts	Chemical strawing Selenic acid H2SeO4 ----------- 10 parts Copper (II) sulfate CuSO4 ---- 10 parts Distilled water ------------------- 1000 parts After a good pickling of the metal part put the part in the solution described above. Part will start changing the color from the yellow to the dark blue depending on how long you keep the part in the solution. Just take the part at the desired color and wash it in the distilled water. Worm up and apply olive oil. There you go, I just revealed more than 300 years old recipe on the net. One of the trade secrets.