Homebrew PCBs

On 12/05/2012 03:26, John wrote:
>
> After several false starts I got a board ready to etch. I went to Radio
> Shack and bought a bottle of etchant. It was a chilly(68 F), rainy day
> so I put enough etchant in a plastic dish to cover the board a quarter
> of an inch. I stirred it cautiously and it had barely started to etch in
> 15 minutes. I warmed it gently with a small heat gun up to a little over
> 100 F occaisionally. It took an hour and a half to etch. I may not have
> shook it up enough so my next attempt will be with the rest of the
> bottle in a bigger dish.

Most FeCl3 in liquid form is concentrated, and needs to be diluted to 
work properly. You should have put your etching container in a larger 
container with some just boiled water in it, and agitated it 
continuously. It should have taken less than 5 minutes

Leon
-- 
Leon Heller
G1HSM