Carmex Carbide Tiny Tool MKR is a compact solid carbide bar designed specifically for full-radius grooving in turning operations. Its precise geometry makes it ideal for engineers, machinists, and hobbyists who need clean, consistent grooves in tight workpieces. With a 7.1 mm minimum diameter, a 2 mm groove width, and a 22 mm reach, this tool handles small to mid-size parts with confidence. Available in two high-performance grades, BXC and BMK, it’s tailored to different materials and cutting conditions.

• Dedicated full-radius grooving geometry: Engineered to cut the full-radius groove in a single pass, ensuring accurate corner radii and smooth groove walls for reliable part geometry and fewer finishing steps.
• Two advanced carbide grades for versatility: BXC with PVD TiN coating supports low-speed cuts on stainless steels (ISO P30-P50 / K25-K40), while BMK offers a sub-micron structure with triple PVD coating for exceptional heat resistance and smoother cutting across materials.
• Compact, accessible dimensions for tight workspaces: The 7.1 mm minimum diameter, 2 mm groove width, and 22 mm reach give you access to confined pockets and awkward geometries without sacrificing rigidity or performance.

In practice, the Carmex Tiny Tool MKR delivers predictable, repeatable grooves and solid performance across turning tasks. The combination of precise full-radius geometry, versatile carbide grades, and compact reach helps reduce setup time, minimize tool changes, and improve overall part quality—making it a dependable choice for both demanding production and precise hobbyist work. It’s also suitable for general turning, providing a reliable all-around solution when groove-focused capabilities aren’t the only requirement.