Double-Wing O-Flute Geometry
Two open O-flute cutting wings provide chip space for freer cutting and controlled chip formation in compatible soft plastics.


Solid-carbide, right-hand, double-wing O-flute straight-cut router bit designed for routing soft plastics. Its 1/4-inch cutting diameter, 1-1/4-inch cutting edge, 1/4-inch shank, and 4-inch overall length provide open chip space and neutral axial cutting action for compatible CNC routing applications.
A two-wing HW solid-carbide plastics-routing tool combining open O-flute chip space, straight cutting geometry, and right-hand rotation for compatible CNC routers.
Designed for compatible CNC routers using precision 1/4-inch collets or approved toolholding systems. Confirm plastic type, workholding, chip evacuation, spindle direction, and cutting parameters before use.
The Royce Ayr Double O-Flute Straight-Cut Router Bit R56-61411 is engineered specifically for routing soft plastics. Its 0.2500-inch cutting diameter, 1.250-inch cutting edge, 0.250-inch shank, and 4.000-inch overall length provide a compact configuration for signmaking, displays, plastic components, and other compatible CNC-routed work.
Royce Ayr specifies a double-wing O-flute design for this family. The open flute geometry provides chip space for free cutting in soft plastics, while the straight cutting edges apply neutral axial force compared with upcut or downcut spiral tools.
The two-flute, right-hand tool is manufactured from HW solid carbide and carries no coating. Correct collet condition, minimum practical projection, runout control, extraction, feed rate, spindle speed, pass depth, and chip evacuation are essential for avoiding rubbing, melting, chip welding, or poor edge quality.
Technical Specifications
Two open O-flute cutting wings provide chip space for freer cutting and controlled chip formation in compatible soft plastics.
Straight cutting edges avoid the upward or downward axial thrust created by spiral geometry, supporting controlled routing with appropriate workholding.
The 1/4-inch cutting diameter and shank, 1-1/4-inch cutting edge, and 4-inch overall length provide a practical precision-plastics configuration.
Confirm SKU R56-61411, the exact 1/4-inch shank, 4-inch overall length, safe clamping length, right-hand spindle rotation, collet condition, tool projection, machine clearance, and workholding before installation. Match spindle speed, feed rate, pass depth, extraction, and chip evacuation to the specific soft plastic; rubbing and inadequate chip clearance can create heat, melting, rewelding, or poor finish.
The Royce Ayr Double O-Flute Straight-Cut Router Bit R56-61411 provides a purpose-built solid-carbide solution for soft-plastic routing with a 1/4-inch diameter, 1-1/4-inch cutting edge, 1/4-inch shank, and 4-inch overall length.
Its double-wing open O-flute geometry and straight cutting action support freer cutting and controlled chips when the tool is correctly held and operated with suitable plastic-machining parameters.