Onsrud 61-084 Single Edge Router Bit 1/4 Inch Carbide

Product Description

The ONSRUD 61-084 is a single-edge, straight-flute router bit designed for cutting hard plastics and engineered thermoplastics in CNC and handheld routing applications. It features a 0.25-inch cutter diameter, a 1.25-inch length of cut, and a 4-inch overall length, with a 0.25-inch shank diameter. The body is machined from solid carbide, which provides the hardness and edge retention needed to maintain clean cuts in demanding plastic materials. The single-flute design clears chips efficiently, reducing heat buildup at the cutting edge. Licensed trades and machining professionals install this bit in production routing and fabrication operations.

This bit is built for use on extruded acrylic, HDPE, polyvinylchloride (PVC), polycarbonate, polyethylene, polypropylene, polystyrene, UHMW, and other hard plastics. It suits residential and commercial fabrication shops, sign-making operations, and plastic component manufacturing environments where a clean, square-end profile and reliable chip evacuation are required. The right-hand cutting direction is standard for most CNC router spindles.

Key Features

• Solid carbide construction for extended edge life in hard plastic materials
• Single-flute straight design promotes aggressive chip evacuation and reduces heat
• Square end profile produces flat-bottomed cuts and clean edge profiles
• Right-hand cut direction compatible with standard CNC router spindles
• 0.25-inch shank fits common collet sizes on production and benchtop routers
• Non-piloted design allows full-depth plunge and profile routing

Compatibility

Rated for use on extruded acrylic, HDPE, polyvinylchloride, polycarbonate, polyethylene, polypropylene, polystyrene, UHMW, and similar hard plastic workpiece materials. Part of the ONSRUD 61-000P series.

Installation Notes

Install and remove router bits only when the spindle is fully powered down and locked. Use the correct collet size matching the 0.25-inch shank diameter and torque the collet nut to the router manufacturer's specification. Ensure chip extraction is active before starting a cut in plastic materials to prevent recutting and heat buildup at the tool edge. Follow applicable shop safety protocols when operating CNC or handheld routing equipment.