WKSTOOL 31mm 1-7/32 inch Countersink Chamfer Cutter, 3 Flutes 90 Degree High-Speed Steel Mill for Deburring, Hole Enlarging, Chamfering Trimming Fits

WKSTOOL 31mm 1-7/32 inch Countersink Chamfer Cutter, 3 Flutes 90 Degree High-Speed Steel Mill for Deburring, Hole Enlarging, Chamfering Trimming Fits

Widely used for processing soft materials (aluminium, cast iron, brass, copper, magnesium alloy, plastics,wood, PVC plates, and insulating boards) with hardness ≤ HRC32 (HRA66); unsuitable for overly thick or hard materials.Full-grinded cutters offer higher accuracy and finer finish than other substrates. Precision Chamfer Mills Design:Featuring a flat cutting surface and sharp square corners, these versatile end mills excel at creating precise flat surfaces, sharp corners, and straight walls in machined materials, ideal for general milling, profiling, and slotting applications. Optimized for CNC Performance: Designed for demanding CNC and lathes router bit applications, these cutters ensure smooth, accurate, and efficient material removal in various metals and alloys. Their robust construction supports high-performance machining for intricate projects and mold making. Efficient & Rapid Deburring: Save time and increase your workflow efficiency. The aggressive 3-flute geometry cuts faster and more smoothly than standard deburring tools, allowing you to create perfect countersinks and chamfered edges in a single pass, getting the job done right, faster.Delivers a fine-finish surface by distributing cutting load across multiple edges, extending tool life.Fewer flutes (vs. higher counts) optimize chip clearance when machining stringy materials like plastic. Package:1pc Countersink endmills,31mm cutter Dia-12mmShank Dia-71mmOAL,3Flute 90 Degree 1.Secure Workholding:Use high-quality chucks—hydraulic, precision collet, or shrink-fit—to ensure the workpiece is held immovably.
2.Minimize Tool Overhang:Extend the tool from the holder only as much as necessary. Excessive overhang introduces chatter and deflection; if unavoidable, compensate by reducing the feed rate.
3.Optimize Cutting Parameters:Treat speed, feed, and depth of cut as dynamic variables. Adjust them based on the material's behavior, tooling, and the actual cutting conditions observed.
4.Single-Flute Countersinks:Ideal for smaller holes and materials prone to clogging. Their large gullets provide excellent chip evacuation, and their design minimizes vibration at higher speeds, allowing for faster operation.
5.Multi-Flute Countersinks (2, 3, or 4 Flutes):Choose these when a superior surface finish is the goal. Additional flutes distribute the cutting load more evenly, significantly extending tool life. For stringy materials like plastics, however, opt for fewer flutes (e.g., two) to prevent chip packing.
6.The body diameter of your countersink must be equal to or larger thanthe head diameter of the screw or rivet.
7.The pilot hole diameter should be at least 10% largerthan the countersink's body diameter to ensure clean, controlled cutting.