Festool HS Spiral Groove Cutter HS Spi S8 D12/20 – 12 mm Diameter, 20 mm Cutting Length, 8 mm Shank

Overview

Festool HS Spiral Groove Cutter HS Spi S8 D12/20 At a Glance: 12 mm cutting diameter | 20 mm cutting length | 8 mm shank | HS high-speed steel | Right-hand spiral with upward chip removal. Achieve clean grooves and controlled template-guided cut-outs in solid wood with the Festool HS Spi S8 D12/20 spiral groove cutter. Particularly suited to softwood, this cutter combines high-speed steel cutting edges with a spiral geometry that produces a smooth drawing cut and reduces cutting pressure. Chips travel upwards out of the groove, helping keep the cutting area clear and supporting effective extraction. Its 12 mm cutting diameter makes it a practical choice for furniture components, joinery details and guided routing applications. Spiral cutting action for smooth routing The spiral cutting edge engages the timber progressively, promoting smooth running and clean results. A base cutting blade supports plunge entry with a suitable router, allowing internal grooves and cut-outs to be started within the workpiece. Product Highlights • 12 mm cutting diameter: Suitable for grooves and template-guided cut-outs. • HS cutting material: High-speed steel, particularly suitable for softwood applications. • Reduced cutting pressure: The drawing cut supports clean routing results. • Upward chip transport: Helps clear waste from the groove during cutting. • Base cutting blade: Allows controlled plunge entry with an appropriate plunge router. Product Compatibility • Festool OF 900 and OF 1000. • Festool OF 1010 and OF 1010 R. • Festool OF 1400. • Festool OF 2000 and OF 2200. Correct collet required Use a matching 8 mm collet and follow the router’s cutter installation instructions. For template routing, select a suitable copying ring or guiding arrangement and allow for its offset when sizing the template.