The hardboard was cut the same width (4”) and length of the skirt. The finished width at the ends will be 3”. On the hardboard draw a parallel line 2 15/16” from the top. We went 6 ½” from each end and then 45 degrees to the bottom of the skirt. This will vary on the end skirts.
Attach strips of hardboard on these lines using double stick tape. The guide will follow the strips and cut the pattern 3" from the top edge.
Flip the pattern and cut the stepped profile with the hardboard strips resting on the guide and base plate.
As a safety precaution always use a bit guard when making this cut.