WEEK 6

On this week I want to do the etching on the PCB that I finish draw. below is the step to do the etching:

1) PCB, salt and water. The PCB need to soaked with the salt water because to vanish the green colour on the board. 

2) Then it will appear the line that have been draw on the board.

3) Next the PCB need to soaked with the ecthing powder

4) After we soaked with the ectching powder the PCB only appear the line that we draw and the PCB colour change.

5) Then again need to soaked with the thinner to vanish all the green line. This step to make sure that the unwanted line is disappear.

6) Finish all the step of etching