I just made a board using 8 mil tracks with the JetStar Premium film sample that Mega sent me. They came out very well with no over-etching - all the tracks are visually the same width. There are definitely no breaks. A minor problem was caused by the film being slightly thicker than the standard JetStar film, and a little ink got smeared on in one place, because I use an ordinary piece of paper as a carrier, making the whole thing a bit too thick. I'll have to remove a couple of small dots of copper that have caused shorts. The board has an MSP430F1232, a couple of buttons, an LED, and a Spark Fun Electronics MiRF module (nRF2401A), all powered by a Li coin cell. It's mostly SMT. Leon
Message
8 mil tracks with JetStar film
2006-01-25 by leon_heller