Truss Rod help

When routing the channel for the truss rod what angle or degrees is used for the curve, and what is the best way to do it.

Thanks

There are tutorials here that show how to build a jig for a single action rod which needs a curved channel. Double action rods have a flat channel and generally used in two piece necks where the channel is on the top and a fret board is glued over the top of that.

Search TDPRI for JWells - he has some great threads on building necks and making "curved" jigs for single action truss rods.

Thanks for the help guys.
This forum has been such a massive help.