
Cheap PCB etching fluid




Recently I found in the Internet at a very cheap solution for etching PCB. To make it you need components which total cost not more than $0.5.
Previously, I etched with ferric chloride, and then used sodium persulfate, which does not stain. However, the solution I found is better and faster that both of them!

- For 40 ml PCB etching fluid
- Hydrogen peroxide
- Lemon acid
- Salt

- Pickling tank
- Step 1
Mix all the ingredients in the proportions:- Hydrogen peroxide 100
- Lemon acid 30
- Salt: 5
- Hydrogen peroxide 100
How to etch pcb fast and cheap

An another way to rapidly etch a PCB, let's watch!

- Etches very quickly unlike etching by ferric chloride or sodium persulfate
- The whole process took 12 minutes
- The cost of this solution is very small in comparison with others
- Does not stain