The authoritative public forum
  for Metal Finishing since 1989
-----

Information of chemical etching of PCB

Hello

I'm trying to make a PCB chemical etching machine to avoid the human contact with the chemicals products. Where can I find information about etching time's, concentration of the solution(part of water per parts of ferric chloride ⇦this on eBay or Amazon [affil links] ), when the solution is saturated, what other solution can I use.

I'm a computer engineer student from Venezuela

Bye

Thanks

Jesus reategui
- Barquisimeto, Lara, Venezuela
2000

---

You really need to contact companies who manufacture equipment for printed circuit board fabricators. The machines you refer to already exist. Chemical formulations include, in addition to ferric chloride , ammonia ⇦this on eBay or Amazon [affil links] , cupric chloride, and sulfuric acid/hydrogen peroxide. What you use and how you use it depends upon the particular application. For a start, check out journals devoted to printed circuit fabrication (BIG hint on a starting place for an internet search)!

James Totter, CEF
- Tallahassee, Florida
2000