Carmex Carbide Tiny Tool – Face Grooving with Chip Breaker (MFR-C, K20 Grade) is a precision solid carbide bar designed specifically for face grooving. It delivers straight grooves for a clean, accurate slot on a range of materials, including stainless steels. The compact form features an 8 mm minimum diameter and a 2 mm groove width to fit tight tolerances on small components.

From the Tiny Tools family, this tool is offered with two coating grades to suit different cutting conditions: the BXC TiN-coated variant for low-speed cutting and good stainless-steel performance, and the BMK variant — a sub-micron grade with an advanced PVD triple coating for extremely high heat resistance and smooth cutting. This combination provides flexibility across your machining needs while keeping accuracy at the forefront.

• Straight-groove precision: Specifically engineered for face grooving, these bars produce straight grooves for consistent, accurate slots and a reliable surface finish.
• BXC TiN-coated option for low-speed cutting: TiN-coated grade optimized for low cutting speeds and broad stainless-steel compatibility (ISO P30–P50 / K25–K40).
• BMK sub-micron with triple PVD coating: Delivers extremely high heat resistance and smooth cutting, making it a durable, general-purpose choice for a wide range of materials.

Designed for reliability and repeatable results, this tool helps you achieve precise grooves with controlled wear. The coating options let you tailor performance to your material and process—whether you’re cutting stainless steel at slower speeds or tackling tougher, high-heat jobs—so you can maintain efficient workflows and consistent quality across small-diameter grooves.