The Carmex Carbide Tiny Tool is a compact boring bar built from solid carbide, engineered for small-diameter internal work and light turning in tight spaces. With a minimum bore diameter of 4.1 mm, a reach of 15 mm, and a precise R0.05 corner radius in a left-hand orientation, it delivers clean, controllable cuts in confined cavities.

This tool line offers two coating options to match your material and speed: BXC TiN coated grade optimized for low cutting speeds and stainless steels, and BMK with a sub-micron grade and advanced PVD triple coating for high heat resistance and smooth cutting. Whether you’re working with stainless steels (ISO P30-P50 / K25-K40) or general-purpose materials, this tiny bar is built to perform.

• Compact, precision-ready geometry: 4.1 mm minimum diameter, 15 mm reach, and a tight R0.05 corner radius—designed to access small bores and deliver accurate finishes in confined feature spaces. Left-hand orientation supports stable cutting and consistent chip flow on common machines.
• Coating options for versatile performance: Choose BXC TiN for low-speed stainless-steel work or BMK’s sub-micron, triple-coated carbide for high heat resistance and smoother cutting, extending tool life across a wide material range.
• Versatile boring bar for turning and boring: Although optimized for boring, this solid carbide bar handles general turning tasks as well, enabling a single-tool workflow for many small-part operations and reducing tool changes.

This tiny tool helps you complete precision bores in tight cavities with confidence, reduces setup and tool-change time, and delivers consistent finishes across stainless steels and other materials. The robust carbide body combined with advanced coatings minimizes wear and heat buildup, supporting repeatable results and longer production runs.