Onsrud 61-082L Single Edge Router Bit 1/4 in Solid Carbide

Product Description

The ONSRUD 61-082L is a single-edge, straight-flute router bit engineered for clean, precise cuts in hard plastics and similar materials. It features a 0.25-inch cutter diameter, a 0.75-inch length of cut, and a 2.5-inch overall length. The bit is machined from solid carbide for hardness and wear resistance. Its left-hand cutting direction and single-flute geometry are optimized to evacuate chips efficiently and reduce heat buildup during routing operations. Licensed machinists, CNC operators, and trade fabricators working with sheet plastics and similar engineered materials install and operate this bit.

The 61-082L is suited for routing extruded acrylic, HDPE, polycarbonate, polyethylene, polypropylene, polystyrene, polyvinylchloride, UHMW, and other hard plastics. Its square end profile produces flat-bottomed cuts and sharp 90-degree wall transitions, making it a practical choice for profiling, pocketing, and edge work in fabrication and production environments. The 0.25-inch shank diameter fits standard collets on CNC routing machines and handheld router platforms configured for that collet size.

Key Features

• Solid carbide construction for durability and edge retention in hard plastic applications
• Single-flute, straight geometry promotes efficient chip evacuation and reduced heat buildup
• Left-hand cutting direction for specific CNC spindle configurations requiring reverse rotation
• Square end profile delivers flat-bottomed cuts and clean 90-degree wall geometry
• 0.25-inch shank diameter fits standard quarter-inch collets
• Compatible with a broad range of hard plastic workpiece materials including UHMW and polycarbonate

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

Installation and operation should be performed by qualified CNC operators or machining professionals familiar with router bit handling and machine safety. Ensure the routing machine spindle is fully powered down and locked out before inserting or removing the bit from the collet. Verify that the machine spindle rotation direction matches the left-hand cutting direction of this bit before operation. Follow all applicable machine manufacturer guidelines and shop safety procedures when securing workpieces and setting feed rates.