Was the H2O2 you used the common over-the-counter drugstore variety (~3%) or the more concentrated (and very dangerous) lab supply kind.
- jim
On Wed, 10 Jan 2007 08:50:01 -0800 (PST)
DB Express <
dbxprss@...> wrote:
> I just etched my PS board this morning. Not too bad for a first try:
> http://members.lsol.net/gop4evr/unlinked/psboard.jpg
>
> I used homebrew etchant (2:1 hydrogen peroxide/muriatic acid). At $2.69/gallon for the muriatic acid and 69 cents/quart for hydrogen peroxide, this sure beats paying $6/pint for the FeCl. It works well, but has some odor. I used it outside just as an extra precaution.
>
> Those who were following this project on E101 will notice that I rotated the regs 90 degrees (to make room for the heat sinks and give better airflow). It was suggested that I add some filled areas for heat dissipation, and I probably went overboard. I figured that since I had the room to work with, the wider traces couldn't hurt anything and would also give me some fudge room in case of etching voids. I am pleased with the result, which was made possible by the information I gleaned from this group and related web sites. Thanks guys.
>
> Nels
>
>
>
> __________________________________________________
> Do You Yahoo!?
> Tired of spam? Yahoo! Mail has the best spam protection around
> http://mail.yahoo.com
>
> [Non-text portions of this message have been removed]
>
>
>
> Be sure to visit the group home and check for new Links, Files, and Photos:
> http://groups.yahoo.com/group/Homebrew_PCBs
>
> If Files or Photos are running short of space, post them here:
> http://groups.yahoo.com/group/Homebrew_PCBs_Archives/
> Yahoo! Groups Links
>
>
>
>