Homebrew PCBs

On Tue, 23 Mar 2004 13:50:16 -0500, Jeremy Taylor <jt@...> wrote:

> It's bad points,
>
> Chlorine smell.
> Chlorine Gas release if improperly cared for
> Slower etching time
> Etches nearly all metals, and concrete , fumes can corrode nearby metals.
>
> But imo if properly cared for, and proper steps taken to setup your work
> area, ventilation good, etc...
> It's good points out weigh it's bad points.
>
> JT


If you keep the lid on there are no corrosion problems.
Just don't let a jar of it standing around until all is vaporized near 
tools.


Etching time is a question of H2O2 concentration also. if it is OK it is 
much faster
than only with using bubbling. I do not know exactly why. Of course
clorine production will increase. But if you have some ventilation you can 
have a board in
11 seconds ;-).

 From my past experience with FeCl it is not slower, with a nearly zero 
level of clorine.
with some clorine it can be much faster. and the clorine smell is still
lower than what you get from any swimmingpool that uses clorine in it's 
filter.

(Meaning the smell around the filter unit, not the water itself)

ST