Description

1. Making solution:

Mix one bag of etching powder with 1l of water in plastic container, Use wood, glass or plastic sticker stiring it until all powder disappeared

2. Etching:

Drop the board into the solution until all bare copper etched off, during this process, you can monitor your PCB very easy due to the solution is clear or semi-clear.

Rinse:

Rinse the circuit board in tap water. Ensure that all of the previous solution is cleaned off the board.

Etching time is 5 to 10 minutes at 45°C

The solution is clear when it is fresh and change to blue after used

The solution will generate Oxygen(O2) when etching, it is good to air.

3. Notice:

Don’t heat the solution over 60°C.

Don’t use same container for developing and etching.