Whiteside SB25-2 — Spoilboard Cutter – Straight, 1/2" Shank, 2-1/2" Dia.
- Shank: 1/2"
- Large Diameter: 2-1/2"
- Wings: 2
Materials:Natural woods, composite woods, hard plastics
Recommended RPM:10,000-12,000 (max 12,000)
These large CNC Surfacing bits are designed to resurface your workpiece or CNC spoilboard. The bit has a straight cut and extended life through the use of replaceable carbide inserts.
- TOOL SPECS: Carbide-tipped large CNC spoilboard surfacing straight cut bit with 2-1/2″ large diameter, 1/2″ shank, and 2 wings for use with 1/2″ collets.
- SURFACE FINISH: Designed to deliver a smooth, high-quality finish on the top surface of your project. Commonly used for flattening slabs or resurfacing a CNC spoilboard.
- CNC APPLICATION: Ideal for flattening and leveling large material surfaces on your CNC machine—ensures consistent depth and smooth results across wide areas.
- REPLACEABLE CUTTERS: Features replaceable carbide inserts for maximum efficiency and longevity. Inserts can be rotated so that each edge of the insert can be used.
- LARGE DIAMETER: When surfacing, the large cutting diameter allows for fewer passes compared to smaller bits.
- MATERIALS: Perfect for use on natural woods, composite woods, and hard plastics, providing clean and precise cuts across a variety of surfaces.
Whiteside catalog page 34.


