Make 6,8,12 and 16 sided projects. Only one edge of the material is cut in stock up to 1-3/64 or 1-1/4". The interlocking design of the joint makes the final frame incredibly simple to glue up with no shifting problems. Great for making planters, barrels, columns, birdhouse, chest lids and tapered legs that can multi-faceted or sanded to a curve. Instructions are HERE.