Homemade PCBs: question about handling ferric chloride

[catcow]

I'm just about to start using the “Press N Peel” system but I have a few questions that I couldn't seem to get the answers to on the net!

Is the ferric chloride solution reusable or do you have to dispose of it after etching?

How long can you store ferric chloride once you’ve made it?

What's the best & safest way to dispose of ferric chloride?

 

[FoxyRick]

Re: Homemade PCB's

Hi,

Ferric chloride can be reused - it will gradually turn darker and etch more slowly as it gathers copper. Throw it away when it's too slow.

Ferric chloride solution can be stored for at least several months, if you keep it air-tight and dark. Don't make up more solution than you need though. It keeps longer as the crystals/concentrate.

For disposal, see this thread:



Cheers,
FoxyRick.

 

[catcow]

Re: Homemade PCB's

Thanks, That's exactly what I was after.