In the thread link below, Hambone describes a jig he made to convert a P to a J neck. http://www.talkbass.com/forum/showthread.php?t=140867&highlight=taper+jig I need to do this for a P neck soon. Is the neck only routed, or the taper applied, to one side only (the G string side)? Any pics would be much appreciated from anyone who's created or knows of a similar jig. I'll be using a router not a table saw. Hambone, if you read this, has your status on this forum increased enough to post a pic of your jig?