BEYOND MGEHR2525-3T40 Right-Hand External Grooving & Parting Toolholder | 25x25mm (1" x 1") Imperial-Equivalent Square Shank CNC Lathe Heavy Cutter Body for MGMN300 MRMN300 Indexable Carbide Inserts Stainless Parting It handles the work-hardening better

It handles the work-hardening better than anything else I've tried

— Manfred S

Severe Vibration Marks on Part: Cutting depth ($ap$) might be tracking beneath the nose radius configuration of your CCMT120404 insert

[M] Clamping Mechanism: D-Type double-clamping system (bridge clamp + internal pin lock) for high structural stability

BEYOND MGEHR2525-3T40 Right-Hand External Grooving & Parting Toolholder | 25x25mm (1" x 1") Imperial-Equivalent Square Shank CNC Lathe Heavy Cutter Body for MGMN300 MRMN300 Indexable Carbide Inserts Stainless Parting It handles the work-hardening betterBEYOND MGEHR2525 3T40 External Grooving & Parting Toolholder 25x25mm (1" Square Shank) Right Hand Monolithic CNC Lathe Heavy Body for MGMN300 MRMN300 Indexable Carbide Inserts CRITICAL EXCLUSION NOTICE: The indexable carbide grooving, parting off, or round nose profiling insert (Model: MGMN300 MRMN300 with 3. 0mm cutting width) shown mounted inside the toolholder jaw pocket seat within our product photography, dimensional blueprints, or setup diagrams