Etch a Circuit Board

How to Etch a Circuit Board(2)

Etching

1.Put on the goggles and gloves. Always remember safety first.

2.Make sure the area is extremely well ventilated before mixing. Some of the chemical produce hazardous fumes.

3.Mix are Hydrochloric acid and Hydrogen peroxide. Mix two parts Hydrogen Peroxide for every one part Hydrochloric Acid. When mixed, they form a substance that is a severe skin irritant, will produce toxic chlorine gas.

4.In a non-metallic basin pour enough of the solution to completely submerge the circuit board.

5.Drop in the circuit board and agitate it for about ten to fifteen minutes. Continue stirring until all copper has dissolved, and the solution has taken on a slight green tinge.

6.For cleanup, make sure you are wearing gloves. Wash the board off in cold water to remove any etching solution. Then use a paper towel or rag to dry it off completely. Set it aside. Assure that there is no solution in the workspace or containers then remove the gloves and goggles.

7.Mix a one to one ratio of acetone and ethanol. Take a paper towel, dip it into the washing solution, and gently rub it over the surface of the board. The permanent marker will begin to come off. Continue washing until all marker is gone and you should see that your circuit is now inscribed in the copper.

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