To make a crown mold material to be positioned simply with a stable posture.

In a guide fence 11 of a table circular saw 1, a pair of slits 16, 16 in the upper and lower directions are formed on both right and left sides of each guide part 12, with a knob 17 attached to each slit 16. This knob 17 is vertically movable along the slit 16 by screwing a bolt 19 having a stopper plate in the rear onto a nut through the slit 16 from the rear of the guide part 12. When the knob 17 is screwed at a position in contact with the upper end of a crown mold material W, the knob 17 and the stopper plate hold the guide part 12 from the front and the rear, thereby capable of positioning the crown mold material W at the position.