Carmex Carbide Tiny Tool - Boring Bar - MTL - TNX Grade - 3.1mm Minimum Diameter x 15mm Reach x R0.05 (Left Hand)

The Carmex Carbide Tiny Tool is a precision solid carbide boring bar designed for tight internal work. With a 3.1 mm minimum diameter and a 15 mm reach, it delivers rigid, accurate access to small bores and features, making it ideal for delicate finishing and precise internal profiles.

While its primary role is boring, this tiny tool also handles general turning tasks. It’s offered in two coated grades to match a range of materials and cutting speeds: the BXC grade with a PVD TiN coating optimized for low-speed cutting on stainless steels (ISO P30-P50 / K25-K40), and the BMK grade with a sub-micron structure and triple PVD coating for high heat resistance and smooth cutting across materials (ISO K10-K20). The combination provides reliable performance across demanding applications.

• Ultra-compact bore access: 3.1 mm minimum diameter with a 15 mm reach lets you access confined bores and maintain alignment for clean, accurate internal cuts.
• Coated carbide options for versatility: choose BXC TiN for stainless steels at low speeds or BMK with triple coating for high-heat performance, broadening compatibility across materials.
• Left-hand geometry with precise R0.05: a defined left-hand cutting setup and a 0.05 mm corner radius support smooth exits and consistent finishes in boring operations.

This tool helps you streamline internal turning workflows by combining exact small-diameter reach with coatings that resist wear and heat. Its focused geometry reduces setup time, delivers predictable chip control, and supports reliable, repeatable results across a range of materials, making it a dependable choice for precision boring and fine turning tasks.