I used spiral blades for the first time in about 10 years. I started a portrait by stack cutting three 1/8" BB ply using #3 spiral (either Olson or FD). Way too many fuzzies. I thought it would speed up the work, but the sanding afterwards was too time consuming. I switched to a #1 FD-UR and was much happier with the outcome. To those that have mastered the spiral blades, I bow my head to you. I will try them again, but next time it will be on hardwood.