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Velleman PCB Etching Tank ET-20

2007-03-22 by Leon Heller

I've just etched a small board (ARM JTAG interface) using the new tank 
and it looks very nice. The instructions suggest two minutes to warm 
the solution after switching the heater on; I used about five minutes, 
and at least 20 minutes is probably about right. Because of the low 
temperature etching took about 15 minutes.

I used my usual photo-etch technique with artwork produced on an HP 
DeskJet 5940 inkjet printer using Premium JetStar film. The text on 
this board had the default 5 mils line width, and came out perfectly. 
Narrowest track size was 12 mils, though.

Here is a photo of the PCB:

http://www.leonheller.com/pcb.jpg

Leon

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