Hey, way back when you also asked how a bend is put in 4-40 wire. I can show you what I use.

Tower sells these Harry Higley benders

http://www3.towerhobbies.com/cgi-bin...&I=LXL787&P=ML

Use a steady and firm pull and take it about 5º past perpendicular, then flip it and open it back up. For a really tight turn clamp it in the vice jaws and rap it once to form it. You could get by with the vice and casing hammer alone, but the Higleys help me get it accurate and more consistant on larger angles. I don't use "Z" bend pliers or jigs, just the Benders and an assoetment of needle-nose pliers and a big hammer or two.