CNC Skills: Part One: All about Origin Points
The Origin Point is your prime reference position
No matter what kind of woodworking you do, reference points and accurate measurements are critically important for woodworkers. This is particularly true when using any kind of woodworking machinery. For example, if you’re using a table saw to rip a board to 4” wide, set your fence to 4”. To set up that fence to a precise 4” distance from the blade, the critical reference point is the edge of your saw blade where the cut is made. It’s from that position that all measurements are made. It’s your “zero” point.
Assuming you’ve adjusted the fence properly — you’ll get perfect 4” cuts. The same is true if you were using stops from the edge of the cut on a crosscut sled, a miter saw station, a router table, bandsaw, planer or any other power tool that uses a fence, stops or some other position limiter.