Lately, all I've seen in 0.100" prototyping board is really inferior phenolic material in small sizes from China with nearly unusable pad patterns. Adhesion of the foil to the board substrate itself is chancy at best. I used to be able to get fairly good-sized (6"x10") pieces of FR4 protoboard with useful patterns (e.g. laid out for 0.300" DIP, with power traces down the middle and pads extending for 2 holes from each DIP pin) with all holes being plated-through. Short of taking old PC ISA or S-100 prototyping boards and cutting them up, does anyone know of some good sources for proto boards? Thanks, Chuck