On Tue, 06 Jun 2006 17:59:53 -0700, "Chuck Guzis" <cclist at sydex.com> wrote: I had the opposite experience - I built several quite complex prototypes using the Vector Slit-n-Wrap system, and had excellent results. In fact I still use it; I still have a working electric wrap tool (as far as I can tell they no longer make those, but they do still make manual ones and the tips are the same so I can still get replacement tips when necessary). The only problems I've ever seen are opens when I set the tension too low (which I catch immediately because it doesn't feel right), and breaking the wire when it is set too high. I have never seen a connection fail later. I also like that wire better than standard wirewrap wire; the tefzel insulation seems more forgiving than kynar. In addition to wirewrapping, I use it for soldered jumpers; with kynar, the insulation seems to like to split and come off the wire near the soldered joint. However, to be fair I don't recall having that problem even with kynar wire ten or more years ago; maybe it's just the quality of the kynar wire that has been available to me has dropped, as it comes from a variety of manufacturers competing for price while tefzel insulated wire still all comes through a single source. allan -- Allan N. Hessenflow allanh at kallisti.com