An inexpensive jig for holding a piece of crown molding, and guiding a hand-held jigsaw at a particular angle to aid in coping the molding. The jig has a horizontal base plate 1 and two vertical side fences 2A, 2B. A guide plate 3 is attached between the front ends of the fences, and is spaced from the base plate by a gap 5. The guide plate is oriented as if rotated through two particular angles about two respective axes from a position normal to the fences and base plate. The resulting front surface of the guide plate guides a jigsaw in the coping process. An opening 4 in the guide plate is aligned with the upper surface of the base plate, and allows molding to be placed on the base plate with an end in the opening to interfere with the jigsaw blade at a desired coping angle. First, the molding is placed inverted against a miter saw fence, and an end of the molding is cut at a 45-degree angle. Next the molding is placed in the jig, with the cut end in the opening of the guide plate. A jig saw is placed on the front surface of the guide plate, and the operator manually guides the jigsaw to follow the contour of the front surface of the molding along the miter cut line. This produces a coped end for a clean 90-degree joint in crown molding.