> - Add a top overlay (if cost permits). theres a top overlay in the design but its such a mess i thought the board would look better without it (you can see it on the layout pdf on my site) so i didn't bother putting it in that gerber set. > - Make all tracks straight or 45 degrees. yeah i got a bit lazy on this, maybe i'll change it if i can be bothered > - Avoid internal angles of less than 90 degrees, eg. look at > track junction near top > right corner on bottom layer. that looks just slightly less than 90 degrees, still noted > These places allow etchant to be > trapped and you can > get over-etching (and it looks bad). Even 90 deg corners look > nicer when a small > fillet of 45 deg is added. mmm can't say i've had any problems with any revs so far (the gerbers i've sent are for a rev that hasn't been produced yet but the main changes are increased pad sizes) > - Try to make tracks exit pads from the end of the pad, looks nicer noted > - Pad sizes are well sized, but 0.010" tracks are a little on the > fine side, looks like > you could handle 0.012" or 0.015" no problems. i just typed in the figure that the uni PCB guys gave me as min reccomended and haven't got arround to increasing it. >Only too fine if > anyone is going to > make the boards at home. you'd be subjecting yourself to extreme pain if you tried to make this without PTH anyway. A diy suitable layout would mean different priorities (i wanted this pretty much as small as was feasible with through hole components). > - Hole sizes: You have 9 different sizes where 3 or 4 should be > sufficient. yeah, as my first PCB project i intially used standard lands from the library and those i later replaced i based on ones from there. this could probablly be changed if i can be bothered. > - In a few places you have tracks running past the end of the pad. yeah, mostly those tiny caps (which are actually a rules violation too but they seem to fab ok on the uni process and worst case is you'd have to run a knife down them) where i tried to keep the track as far away from the other land as possible. > - "Necking down" from one track size to another looks bad when > done on a corner, noted but not a big issue -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist