The Carmex Carbide Tiny Tool - Boring Bar for MTL - TNX Grade is a compact solid carbide bar designed for small-diameter borings and precision turning. With a 3.1 mm minimum diameter and 10 mm reach, it excels in tight cavities and restricted spaces, delivering predictable cuts with a left-handed orientation for controlled chip flow. Built from durable carbide, it provides reliable performance in demanding metalworking tasks.

This tool line targets engineers, machinists, and hobbyists who need a dependable, versatile boring bar. The family includes coating grades that optimize performance across materials and speeds: BXC TiN-coated grade for low-cutting speeds on a wide range of stainless steels, and BMK sub-micron grade with advanced PVD triple coating for exceptionally high heat resistance and smooth cutting, suitable for general-purpose use across all materials.

• Compact bore-capable geometry: 3.1 mm minimum diameter and 10 mm reach enable access to tight bores and confined spaces, improving accuracy and reducing setup time.
• Two coating grades for reliable performance: BXC TiN coating supports low-speed stainless steel cutting for clean finishes, while BMK’s sub-micron, triple-PVD coating delivers superior heat resistance and smoother cutting across a broad material range.
• Left-hand geometry with a precise R0.1 nose radius: The left-handed cutting configuration paired with a 0.1 mm radius nose provides stable edge life, predictable chip flow, and consistent surface finish in boring and turning.

With the Carmex Tiny Tool, you gain a reliable, versatile boring bar that delivers consistent diameters and smooth finishes, even in stainless steels and other challenging materials. The compact size reduces tool changes and fits into tight setups, while the coating options optimize wear resistance and heat handling for longer tool life. Designed for everyday use by professionals and hobbyists alike, this tiny carbide bar helps you complete projects faster and with repeatable results.