The Dormer Pramet C70 corner rounding cutter is an extra-short, high-precision HSS-E tool designed for accurate corner radii and chamfer milling in a range of metals. It’s built for professionals who need reliable edge finishing in tight spaces and demanding materials.

• Diameter: 12.0 mm
• Corner radius: 4 mm
• Shank type: Flatted shank, 12 mm
• Flutes: 4-flute design for efficient material removal
• Overall length: 60 mm
• Material: Cobalt-based HSS-E with bright finish
• Cutting geometry: Optimized helix and rake angles for chamfer milling
• Applications: Suitable for steel, stainless steel, cast iron, wrought, cast aluminium, copper and copper alloys, and high-temperature alloys

This cutter delivers precise, consistent corner radii with smooth edge quality, helping you minimize secondary finishing. The cobalt-based HSS-E construction offers enhanced wear resistance for longer tool life on tough materials, while the flatted shank provides secure, slip-free clamping in your holder. Its compact 60 mm overall length is ideal for confined pockets and narrow milling operations, and the 4-flute configuration balances aggressive material removal with a clean finish. In short, it enables efficient, reliable chamfer milling across a broad range of alloys with predictable results.