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From: "Märt Pikkani"
Date: Fri, 18 Oct 2002 10:34:44 +0300
NNTP-Posting-Date: Fri, 18 Oct 2002 07:37:39 +0000 (UTC)
X-Newsreader: Microsoft Outlook Express 5.50.4522.1200
I don't know if this is rihgt newsgroup to get my answer but i will try. If
not, then could anyone recomend me a newsgroup from where i could get
Here is what i did.
I printed out my PCB on to a tranparency. Then used money detector as UV
light an got tracks onto board. With NaOH (developer fluid) the tracks
became clear and visible.
Then used Fe3Cl to etch the Cu around the tracks.
tracks are still with clear and visible but Problem is that Cu around the
tracks changes its color( like Pink) but doesn't leave the PCB clear.
Meaning that all the plate is still covered with Cu but little Cu has left
the PCB. I could feel the edge of the track with my finger.
What is my problem?
is it money detector (UV ligth), which I don't believe.
Do I do something wrong?
Is it problem of etching bouder?
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