Homebrew PCBs

On 12/05/2012 11:51, Randall Morgan wrote:
> Radio Shack does sell a "ready to use" solution that does not
> need diluting. But heating it does make a big difference. Also, it does not
> seem to work as well as it used to, from my recollection, I used some a
> couple months ago and it took 30 minutes to etch a small board with
> an etchant temp of 100F. I recall that 20 years ago I could etch a board
> four times this size in 10 minutes. When I purchased solution from a local
> electronics supplier I got much better results. My suggestion, stay away
> from Radio Shacks etchant. I suspect they either have very very old stock
> or have reduced the concentration.

Ferric chloride solution shouldn't deteriorate, unlike some other etchants.

Leon
-- 
Leon Heller
G1HSM