One way is to temporarily attach the bowed piece face to face to a good straight board, letting one edge of the bowed board overhang a bit. You could then use a straight bit with a guide bearing (guided by the straight board) to straighten the overhanging edge. Then, take the 2 boards apart and use that newly created straight edge against your TS rip fence the straighten the other edge. Alternately, you can use the straight board as a "carriage" on the TS, using the straight edge on the right against the fence while trimming the overhanging bowed edge (similar to using these "Joint'r clamps")
Keep in mind that a thinner piece on top of the 1x baseboard has the advantage of following the inevitable dips and bows of the wall better than the tall 1x stock below it. This results in less visible gaps between the baseboard and wall (if stain grade), and less caulking (if paint grade).
Keep in mind that a thinner piece on top of the 1x baseboard has the advantage of following the inevitable dips and bows of the wall better than the tall 1x stock below it. This results in less visible gaps between the baseboard and wall (if stain grade), and less caulking (if paint grade).
Comment