Roughing End Mill Corn Cob Cutter Serrated Flute High Removal Rate Carbide for Heavy Roughing CNC

High-MRR roughing endmill. Tested on P20 tool-steel at 70 m/min, 0.18 mm/rev. Chip control was excellent — no chip pack at the flute even at 1.5 mm DOC. Surface finish in semi-finishing was acceptable for a roughing tool. 5 stars.

Coarse-profile roughing endmill. Cutting 4140 at HRC28 with 1.5 mm DOC, 0.15 mm/rev, coolant. Hammering through 50 mm cubed per sec MRR easily. Chip-breaker geometry breaks chips properly — no 'bird-nesting' at the flute. 5 stars for hogging out rough stock.

Carbide roughing mill for steel. Holds up to high MRR cuts on 4140 and 4340. Surface profile has fine serrations for chip-breaking — feeds go up without choking the flute. Solid tool for roughing. 5 stars.

Roughing endmill with proper chip-breaker geometry. We use these on 4140/4340/1045 roughing at 100+ m/min. Reliable, no chipping at the cutting edge, lasts 90+ minutes per corner. 5 stars for roughing.

Roughing endmill for aggressive material removal. Tested on 1045 mild-steel at 100 m/min, 0.2 mm/rev. We removed 80 cc cubed of material in 90 seconds without chatter. Coarse profile, sharp chip-breakers, runs clean. 5 stars.