Homebrew PCBs

Hello Ron,

21. January 2003, 06:27:25, you wrote:

RA> I need to dig up the data sheet for a better explanation, and I'll post it
RA> later.

RA> I am howver interested in your findings with ferric chloride. I've got some
RA> around here as well, and as you stated its shelf life is a real advantage. I
RA> however have never been able to acheive decent etching with it. I've tried
RA> room temperature, 50 deg C (122 deg F), agitation and aeration, and have
RA> always had problems with non-uniform etching. Part of the board gets over
RA> etched, and yet another section 10mm away will be under etched.

RA> A typical board for me is about 50mm x 50mm (2.5inX2.5in) with around 40-150
RA> SMD components with 0.012 to 0.025 traces.

RA> Thanks
RA> Ron


And I replied:

You better use copper chloride! Much safer for enviroment and you will never
throw it away! I do use the Fe3Cl only in emergencies, when boards are to be
made in less than an hour.

-- 
 Best Regards,
 Zoran
 mailto:zasto@...