Carmex Carbide Tiny Tool is a solid carbide boring bar designed for micro-boring and small-diameter turning. With a 3.1 mm minimum diameter, 10 mm reach, and a nose radius of 0.1 mm, it reaches into tight bores to deliver precise internal dimensions with clean finishes.

Designed to suit a range of stainless steels and general turning tasks, this tool line offers two coating grades: BXC TiN-coated for low-speed cutting and BMK sub-micron grade with triple PVD coating for maximum heat resistance and smooth cutting. Choose the coating that matches your material and machining conditions for consistent results and longer tool life.

• Micro-boring geometry (3.1 mm Ø, 10 mm reach, R0.1): Access tight internal features and achieve precise bore diameters with a compact tool body and a tiny nose radius that minimizes deflection and improves surface finish in small-diameter work.
• BXC TiN coating for low-speed stainless cutting: TiN coating provides wear resistance at lower cutting speeds, helping extend tool life and maintain edge quality when machining stainless steels (ISO P30-P50 / K25-K40).
• BMK sub-micron grade with triple PVD coating: Advanced coating stack offers exceptional heat resistance and a smooth cutting action, delivering reliable performance across a broad range of materials.

This micro-diameter boring bar combines a robust carbide core with specialized coatings to deliver consistent, repeatable results. Its compact geometry reduces setup time, supports precise internal diameters, and helps you maintain productivity across micro-machining and small-diameter turning tasks.