Replaceable carbide knives to extend tool cutting life. Just replace the knives when dull or turn to sharper edge if applicable. Replaceable knives are as much as 4 times longer lasting than carbide tipped equivalent. Advantages of Insert Tooling: Long lasting insert knives provide superior smooth quality cuts every time Quick and precise replacements of dull knives Due to insert accuracy tool life is extended Insert tooling allows for harder grades of carbide Special carbide grades for special applications Knives can be re-sharpened multiple times without affecting the original profile Cost effective solution compared to replacing brazed router bits. SPECIFICATIONS: SPECIFICATIONS: (D) Diameter: 2-5/8 (a) Angle: 91 (B) Cutting Height: 1-5/16 (d) Shank: 3/4 Overall Length (L): 3-7/8 a1: 45.5 B1: 1-3/8 Cutting Edges: 2 Max RPM: 18,000 L1: 2-3/8 Flutes: 1 # of knives: 1.
I went back between 91° and 90° and read limited information on the internet. Having now made a few miter folds I wish I had gone with 90°, 91 leaves more clearance than I like on the back and requires extra effort to ensure your part doesn't kink while gluing. I could be wrong as this was my first midfold test. I may get 90 bits in the future, but it's an expensive learning experience.