Hello All,
I'm new to the group, and still a beginner at homebrew PCBs, so I'll
introduce myself by hammering you all with a tough one (for me,
anyways). I recently bought a couple of LCDs with Horz-Bottom SMD
connectors (I should have read the not-so-fine print). The pins
are .2mm wide on .5mm centers. Does anyone have a technique to etch
these fine traces? So far I have only tried photoetching using
transparencies and my Brother HL1240 printer, which leaves a few
pinholes that I can't fill in. Also, the ferric chloride seems to
undercut some of the resist that does remain after exposure.
Any pointers would be appreciated. I had planned on using the LCDs
for debug readouts for a PCB mill that I am building.
Thank you,
Bill Byler
I'm new to the group, and still a beginner at homebrew PCBs, so I'll
introduce myself by hammering you all with a tough one (for me,
anyways). I recently bought a couple of LCDs with Horz-Bottom SMD
connectors (I should have read the not-so-fine print). The pins
are .2mm wide on .5mm centers. Does anyone have a technique to etch
these fine traces? So far I have only tried photoetching using
transparencies and my Brother HL1240 printer, which leaves a few
pinholes that I can't fill in. Also, the ferric chloride seems to
undercut some of the resist that does remain after exposure.
Any pointers would be appreciated. I had planned on using the LCDs
for debug readouts for a PCB mill that I am building.
Thank you,
Bill Byler