Rotary Flame File 8 mm Beta Tools 426MD-OG8 - cylindrical metalworking burr

Beta Tools rotary flame file 8 mm (model 426MD-OG8) is a cylindrical metalworking burr with a flame-shaped cutting profile designed for material removal, deburring, shaping and finishing on metals and other hard materials. The 8 mm cutting diameter and cylindrical/flame geometry allow controlled stock removal and fine contouring. The tool is compatible with standard rotary and die grinders used in metal fabrication, automotive repair and general workshop maintenance where precise shaping and edge preparation are required.

Advantages

The rotary flame file provides consistent cutting performance and durable wear resistance for repeated use on ferrous and non-ferrous metals. Its flame profile enables access to tight radii and interior contours while maintaining surface finish quality. The 8 mm size balances reach and control for detailed work and reduces vibration when used with appropriate speed and tooling. The shank fits standard collets on most rotary tools, facilitating quick tool changes.

Suitable for

• Deburring sharp edges and removing burrs from machined parts
• Shaping weld seams and chamfering small profiles
• Detail grinding of castings, molds and dies
• Surface preparation before finishing and coating
• Precision work in automotive body and engine components

Key specifications

• Cutting profile: flame-shaped cylindrical geometry
• Cutting diameter: 8 mm
• Material compatibility: ferrous and non-ferrous metals, hard materials
• Tool shank: standard diameter for rotary/die grinders
• Typical applications: material removal, deburring, shaping, finishing

How to use

Install the burr securely in the grinder collet and verify runout before use. Operate the rotary tool at the manufacturer's recommended speed for the material being worked; higher speeds suit light stock removal and finishing, while lower speeds increase control during detailed shaping. Apply light, even pressure and keep the burr moving to avoid overheating or gouging the workpiece. Periodically inspect the cutting surfaces and clean or replace the burr when wear reduces cutting efficiency.

Usage recommendations

Use appropriate personal protective equipment such as eye protection, gloves and hearing protection. Ensure adequate ventilation or dust extraction when working with metals or coated materials. Match grinder speed and feed rate to the workpiece material and consider using coolant or intermittent work cycles on heat-sensitive parts.