What can I use instead of ferric chloride?

The short version is:

  • Equal parts vinegar and peroxide.
  • A small heap of salt.
  • Your masked copper board/soon-to-be PCB.
  • Optionally, a little heat to speed things up.

How do you make a PCB etchant?

Mix two-parts of diluted hydrogen peroxide with one-part muriatic acid. There you are, done! The hydrogen peroxide acts as an oxidizer allowing the acid to eat away the copper. Place your board to be etched in your new solution and watch it go!

Which solution is used for PCB etching?

Currently used for print circuit board etching of solvents are iron (Ferric Chloride), cupric chloride (Cupric Chloride), alkaline ammonia (Alkaline Ammonia), sulfuric acid hydrogen peroxide (Sulfuric Acid + Hydrogen Peroxide) etching fluid, ammonium persulfate, sulfuric acid – chromic acid etching solution.

Will ferric chloride damage wood?

Ferric chloride is a compound that is used to etch metal for intaglio printing. It is nasty and can eat through your hand or a sheet of metal in no time. It is highly corrosive and acidic and gives off a lot of heat when added to water. I assume it is being used to burn off the softer wood in the fir.

Is ferric chloride the same as muriatic acid?

Muriatic acid is “hydrochloric acid” (HCl) in a less pure and diluted strength for non-technical applications like cleaning bricks. Ferric Chloride is an iron “salt” of HCl that is nonetheless very acidic, though not as “strong” as HCl. Either will etch any high carbon steel, eventually.

How many times can you use ferric chloride?

Ferric chloride can be used more than once. Once it stops etching, follow the hazardous waste guidelines for where you live.

How do you mix ferric chloride and water?

I mix mine 4:1 with distilled water. That’s 4 parts water to 1 part Ferric Chloride. Store it in something plastic. Add the acid to the water, not the water to the acid.

Will muriatic acid and hydrogen peroxide dissolve gold?

In another container, mix two parts hydrochloric acid and one part weak hydrogen peroxide (a concentration of three per cent). Pour this mixture over the circuit boards so they are completely submerged. Over time, the acid will darken and gold flakes will come off the scraps.

How do you etch a PCB at home?

Take a plastic box and fill it up with some water. Dissolve 2-3 teaspoons of ferric chloride power in the water. Dip the PCB into the etching solution (Ferric chloride solution, FeCl3) for approximately 30 mins. The FeCl3 reacts with the unmasked copper and removes the unwanted copper from the PCB.

Which chemical is used to neutralize the acid used for copper etching?

Use baking soda to neutralize the acid if desired. Some people use a weak ammonia bath to really make sure the acid is removed. Cleaning all the etchant off is important, as it will stain.

What liquid form prevents PCB from corrosion?

Epoxy coatings, aerosol spray coatings, and solder mask are all effective barriers to oxidation and corrosion. If any coating is used, it should be able to withstand any thermal demands in a circuit board that runs at a high temperature.