Answer
Jul 08, 2026 - 06:05 AM
Edge type, such as 2-edge, 4-edge, or indexible, determines how many times a blade or insert can be rotated for a fresh cutting edge, directly impacting longevity and convenience. 4-edge and indexible inserts, like those in the Powermatic PM9-1791212 Shelix Head Inserts, allow you to simply rotate to a new edge when one dulls, reducing replacement frequency and cost. Beveled edges, as seen in Powermatic PM9-6400013 Inserts, can offer smoother cuts. With a range of edge types available, you can select the best option for ease of maintenance and superior surface finish when choosing jointer accessories. In my shop my Jointers and planer are helical head cutters for quick rotation to a new edge and right back in service.
