The Carmex Carbide Tiny Tool Boring Bar is a compact solid carbide solution designed for precise bore work and reliable general turning. With an 8.1 mm minimum diameter, a 22 mm reach, and left-hand R0.2 geometry, it’s built for tight cavities, smooth finishes, and dependable performance in demanding setups.

This tool line offers two coating grades to suit different materials and speeds: BMK, a sub-micron grade with advanced PVD triple coating for high heat resistance and smooth cutting across most materials (ISO K10-K20); and BXC, a PVD TiN coated grade optimized for low cutting speeds and stainless steels (ISO P30-P50 / K25-K40). Whether you’re machining stainless steel or switching between materials, these carbide bars are ready for consistent, dependable results.

• BMK Sub-Micron Grade with Triple PVD Coatings: Delivers exceptional heat resistance and smooth cutting for maximum performance across materials, helping extend tool life and maintain consistent finishes.
• BXC TiN Coated Grade for Low Cutting Speeds: Optimized for stainless steels and slower feeds, reducing wear and built‑up edge for reliable, steady performance in demanding applications.
• Compact 8.1 mm Min Diameter, 22 mm Reach, Left-Hand R0.2 Geometry: Designed to access tight bores and deep pockets while preserving rigidity, enabling precise hole geometry in limited spaces and compatible with common left-handed setups.

When you pair this tiny carbide boring bar with the right setup, you unlock smooth, predictable cutting, fewer tool changes, and consistent bore quality across a range of materials. The BMK and BXC coatings optimize heat management and wear resistance, so you can tackle stainless steels and other alloys with confidence. The compact geometry supports deep, precise bores in tight work envelopes, helping you finish faster and reduce downtime.