DỰ Ớn mạ xuyên lỗ mạch in

[nhatson]

1. 1,25 gramm Cu2SO4 dissolve to 20 ml of distiled water.
2. In other 20 ml of water dissolve 2,9 gramm of NaEDTA (Trilon B).
3. In other 20 ml of water dissolve 1 gramm of NaOH.
4. Slowly adding the solution NaEDTA to solution of Copper sulfate with fastly stirring. Solution have to change color to intensive blue.
5. Slowly adding the solution of NaOH to solution with CuSO4 and NaEDTA. Solution have to change color to light blue.
6. Add the distilled water to 100 ml.
7. Add the 0.1 gramm of Formaline to solution.
Electroless plating bath is ready. On video is shown how does it works if all made fine.

Better quality can be achieved by adding 1 ml of ethyl alcohol.


http://infohouse.p2ric.org/ref/02/01588.pdf