Step to make a PCB:
1- print layout on Oscilloscope Plastic ( black and white)
2- iron the plastic on PCB board
3- adjust with marker the spot that did not have connection
4- boil a plain water
5- put an atching liquid in the Tupperware and add some hot water
6- wait for few munite
7- shake the Tupperware
8- wash the board with plain water
9- while washing the board with plain water, rub sand paper to remove the black ink from plastic and marker ink
10- finish
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