Etching PCB board....

Thread Starter

RRITESH KAKKAR

Joined Jun 29, 2010
2,829
Hello,
What would be the diff in result by using Ferric chloride anhydrous and combination of Mix Hydrochloric acid to Hydrogen peroxide in a ratio of 2:3 and drop your copper board into it. Within 5-10 seconds, you can see the copper removed from the board and tracks clearly visible.

I was etching PCB but it was not etching properly taking time too much but not satisfy result.
http://www.instructables.com/id/PCB...Etching-and-removing-toner-from-copper-board/


Need help!
 

GopherT

Joined Nov 23, 2012
8,009
Anhydrous means "water free". So first, it must be dissolved in water.
Both methods work and you will find people with different opinions - some will like ferric chloride and some will like H2O2/HCl solution.

Which method have you used? Why do you want to switch?
 

shortbus

Joined Sep 30, 2009
10,045
Ferric chloride works much faster if heated to about 40C
And if it is agitated. I use a disposable foam paint brush to move the ferric solution over the the copper and it causes the etch to work much faster. Moving the already etched material and letting new copper to be exposed to the ferric.
 
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