Join Date: Jun 2014
Location: St. Francis, KS
That's one of the reasons for the edge jointer. To square up the sides & faces of your material. If you're running a piece thru the TS, the jointed edge goes against the fence to insure a straight line cut. To joint both edges, & both faces before the saw truly insures that your board is flat, & square. Which is ideal for the TS. For panel glue ups, I always joint both edges for two reasons. One, it squares up the edges for a more solid glue up. Second, you'll have a smooth, even surface to surface to glue to each other. Which in turn creates a better glue up. As far as your planing goes, I face joint one side, run it through the planer, then edge joint the both edges.