Step 1: Things Required
2. Etching solution (30%hcl and 6%h2o2)
3. Correction pen
4. Nail polish remover
Step 2: Preparing the Etching Solution
AND THIS IS ALL U NEED .
*NOTE - the concentration of reactions and the mix ratio can have a varied range . These are just the values which I prefer.
Step 3: Making Circuit
Step 4: Method
Take out the circuit wash it with water clean the water with dry cloth rub the pen ink with nail polish remover and your circuit will be ready