PATIKIL 20 Pack 0.5mm Micro Drill Bits 1/8" Shank Carbide Tungsten Steel 135° Mini Small Bits Print Circuit Board Drilling Tool for CNC Engraving Precision Machinery
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Product description
- PACKING LIST 20 packs of micro drill bits in 0.5mm 0.01969inch cutting diameter, 3.175mm (1 8inch) shank diameter, 7mm 0.28 inch flute length, 38mm 1.5 inch overall length, 135 point angle, suitable for processing small components. NOTE color is random
- FEATURE Our carbide twist drills combine 92% Tungsten Carbide 8% Cobalt for extreme hardness (HRA 89-95), wear resistance (3x HSS life), and heat stability (800 C+). Featuring razor-sharp cutting edges and precise milling grooves, ensuring maximum productivity and durability in demanding applications.
- NOTE When machining different materials, the spindle speed and feed rate vary. Generally, the harder the material, the lower the spindle speed and feed rate should be. Always use coolant in high-speed machining to protect carbide tools from heat-induced failure.
- INSTRUCTION Make sure the workpiece is firmly clamped (such as using a vise or fixture) to prevent it from sliding during drilling. Position the twist drill at 90 to the workpiece. For thick materials, drill in multiple passes to prevent overheating or breakage.
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