low cost prototype PCB vendor?

Chuck Guzis wrote: I've got the tools to do wire-wrap, but none of the boards, sockets or hardware (it seems WW IC sockets have become rather difficult to source). The long pins also tend to get in the way IMO... To be honest, I prefer the RoadRunner point-to-point wiring pens. They're a bit like wire-wrap, but you use enamelled copper wire which is soldered to the component (or socket) pins like a PCB "ratsnest". Though admittedly it is a good idea to use wiring guides (aka "wiring castellations" -- they look a bit like the battlements on top of castle towers) to keep the wires tidy. I usually have one of these between each row of ICs, then route all the wiring inside them -- it keeps things much tidier, though it's not as easy to trace a fault. Replacing resistors etc. is usually best done by nipping off the old component pins at the body of the part, and soldering the new part to the stubs... it's very much a one-shot prototyping system. One of these days I need to find some software that can take an CAD netlist and produce a wire-wrap wiring list using the "top and bottom" technique (that is, wires are "on top" at one end and "on the bottom" at the other, thus making any changes possible with the removal of at most one wire). I know this has been done in the past, though I don't think any of the EDA software that did it has survived... :( (Even if it was designed for Wire-Wrap, it might be useful for the Roadrunner system too) -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/