Thanks, I've seen and used a couple of different ones that are out on the web. There are still times however that I'll etch the circuit on common 1 oz and add an additional piece of bare wire acrss a trace that has to carry a lot of current such as the output legs of a power FET driver. No reason to make the whole board out of thick stuff, it's far too cost prohibitive and as mentioned during the etching process you get concave areas between the resist and the board itself. If you specify too thin of a line width half of the center area of the trace can be etched away.Marshallf3,
Although I'm sure you're aware of how to calculate required trace widths, have you seen PCBtrace?
Roman Black has it hosted on his site: http://www.romanblack.com/pcbtemp.htm
Pretty handy freeware tool.
by Aaron Carman
by Aaron Carman
by Aaron Carman