Swapping knives in a Tersa head is a few minute operation vs. at least an hour plus rotating all the knives on a spiral head. I've heard of people with Tersa having a fresh set they'll just install for a final pass and then put the duller workhorses back in.
Jason Holtz J. Holtz Furniture
3307 Snelling Ave. South
Minneapolis, MN 55406 612 432-2765
-- Jason J. Holtz Furniture 3307 Snelling Ave. South Minneapolis, MN 55406
Jason Holtz