Onsrud 37-21 Engraving Cutter 30 Deg Solid Carbide

Product Description

The ONSRUD 37-21 is a solid carbide engraving cutter designed for high-precision marking, engraving, and detail work on a variety of materials. It features a conical point geometry with a 30-degree included angle and a 0.005-inch tip diameter, enabling fine line engraving and sharp character definition. The single-flute, right-hand cutting configuration supports clean chip evacuation and consistent cut quality. With a 0.25-inch shank diameter and 2-inch overall length, it mounts in standard CNC router collets or engraving spindles. This cutter is intended for use by CNC operators, sign makers, and machining professionals running production or prototype engraving programs.

The 37-21 is suited for engraving applications on aluminum, plastics, solid surface materials, and wood. It performs well in both production shop and job-shop environments where fine-detail engraving is required on flat or slightly contoured workpieces. The uncoated solid carbide construction makes it appropriate for non-ferrous metals and synthetics where coating interaction or heat buildup is a concern. It fits within the ONSRUD 37-20 series of engraving cutters.

Key Features

• 30-degree included angle conical point for fine, precise engraving lines
• 0.005-inch tip diameter for tight detail and small character work
• Single flute, right-hand cutting for clean chip evacuation
• Solid carbide construction for rigidity and wear resistance
• Uncoated finish suitable for aluminum, plastics, solid surfaces, and wood
• 0.25-inch shank diameter for compatibility with standard CNC collets

Compatibility

Part of the ONSRUD 37-20 series. Designed for CNC routers and engraving machines accepting a 0.25-inch shank collet. Rated for use on aluminum, plastics, solid surfaces, and wood.

Installation Notes

Installation should be performed by a qualified CNC operator or machinist. Power down and lock out the spindle before changing tooling. Seat the shank fully in the collet and torque the collet nut according to the machine manufacturer's specification. Verify runout with a dial indicator before beginning a production run, as tip geometry at this scale is sensitive to spindle concentricity.