The Carmex Carbide Tiny Tool Boring Bar is a compact, solid carbide cutting tool designed for precision boring in tight spaces. With a 1.2 mm minimum diameter and a 9 mm reach, it lets you bore deep holes in small workpieces while maintaining consistent accuracy. It’s built for engineers, machinists, and hobbyists who demand reliable performance in micro-machining tasks.

This tool line supports two coated grades to suit different materials and speeds. The BXC Grade features a TiN coating optimized for low cutting speeds and stainless steels (ISO P30-P50 / K25-K40), delivering reduced wear and smoother cuts. The BMK Grade is a sub-micron, triple-coated option that delivers exceptional heat resistance for maximum performance across a broad material range, with smooth cutting and dependable longevity. Ideal for boring and general turning on a variety of materials.

• Compact, precise boring capability: 1.2 mm minimum diameter and 9 mm reach enable deep, accurate bores in tight parts, reducing setup time and allowing for cleaner hole geometry.
• Coating options tailored to your material: BXC TiN coating excels at low-speed stainless steel work, while BMK’s sub-micron, triple PVD coating provides excellent heat resistance and smooth cutting across a wide range of materials.
• Thoughtful geometry for consistent finishes: R0.05 nose radius supports controlled chip formation and a smoother surface finish, delivering repeatable results in demanding boring and turning tasks.

This tiny carbide boring bar is engineered to improve workflow and reliability. Its robust carbide core resists wear under demanding use, the coatings help extend edge life, and the precise geometry ensures dependable hole quality across jobs—from prototypes to routine production. Whether you’re machining stainless steel components or transitioning to general turning, this tool delivers consistent performance with less downtime and greater confidence in every cut.