D., Looks like your Rotation point is set at the wrong point. The point of rotation should be set at the vertex where you want the rotation to take place. The Cyan color shows the vertex where rotation should take place. CTRL-ALT-Click on that vertice and it will reset the axes. Now this means that the vertices being rotated will rotate in the correct angle, but not that they will spread out to make it perfect in line. That would require you to resize the spacing of the vertices along the X and Y axes. It will definitely take some doing, but it CAN be accomplished. For a quick fix, use a standard 5x5x5 block set at 45 degree rotation on the Z axis and boolean it out of the moulding. It may create a few extra vertices, but it would solve your problem and create a straight edge. Ken