Building a centering jig is a very interesting project as a shop jig. The purpose of this centering jip is to do exactly what it says. It will quickly and easily find the center line of a board right on dead center.
I’m sure from time to time you have had the chore of trying to find the dead center of a board whether it is the center of the edge or on the face, and found that it was time consuming and not always easy.
Building a centering jig is constructed primarily from scraps that you will have around the shop.It will require 3/4″ material about 1 1/2″ wide by 6″ long. A couple dowels 1/4″ or 5/16″ you may have kicking around the shop and a regular lead pencil.
If you want to find the center on a boards edge, simply turn the board edge up placing your jig on the board with the dowels down and each tightly against the board. Then just simple pull the jig down the length of the board marking dead center as you go.
If you require marking wide boards, simple make a jig the same way but longer ( maybe 16″ instead of 6″ )