Onsrud 61-042 Router Bit 1/8 in Solid Carbide Single Edge

Product Description

The ONSRUD 61-042 is a single-edge, 1-flute straight router bit designed for clean, precise cutting in hard plastics and similar materials. The bit features a 0.125-inch cutter diameter, a 0.5-inch length of cut (LOC), and a 0.25-inch shank diameter, with an overall length of 2 inches. Manufactured from solid carbide, it delivers the rigidity and edge retention required for demanding plastic-routing applications. The right-hand cutting direction and square end geometry produce flat-bottomed cuts with minimal burring. This bit is part of the ONSRUD 61-000P series and is sold individually.

This bit is suited for routing extruded acrylic, HDPE, polycarbonate, polyethylene, polypropylene, polystyrene, PVC, UHMW, and other hard plastics. It is commonly used in CNC router operations and handheld routing applications where fine detail work in plastic sheet, rod, or block stock is required. The 1/8-inch diameter makes it appropriate for narrow slots, detail passes, and profiling in thin or thick plastic workpieces across both light production and fabrication shop environments.

Key Features

• Solid carbide construction for rigidity and long edge life in hard plastic materials
• Single-edge, 1-flute design promotes efficient chip evacuation and reduced heat buildup
• Square end geometry produces flat-bottomed cuts and clean slot profiles
• Right-hand cut direction compatible with standard CNC and handheld router setups
• 1/4-inch shank fits common router collets and CNC tool holders
• Non-piloted design allows full operator control over cut path and depth

Compatibility

Designed for use on extruded acrylic, HDPE, hard plastics, polyvinylchloride, polycarbonate, polyethylene, polypropylene, polystyrene, and UHMW. Part of the ONSRUD 61-000P series.

Installation Notes

Install into a router collet or CNC spindle rated for the 1/4-inch shank diameter and confirm proper tool runout before cutting. Power down and lock out the router or CNC machine before changing tooling. Secure workpieces firmly to prevent movement during the cut. Follow applicable machine manufacturer guidelines and shop safety protocols when routing plastics.