6A Fine‑Grinded Tri‑edge Carbide Engraving Bit | 3.175mm Shank
Made of German‑grade 6A ultra‑fine grain solid tungsten carbide rod, one‑piece forming for high hardness and outstanding wear resistance.
Tri‑edge three‑flute structure
Triangular cross‑section brings stable rigidity and even force distribution. Resists tip chipping and breaking, provides stable cutting performance.
Mirror grinding craftsmanship
Mirror‑polished cutting edges, burr‑free sharp flutes with high concentricity. Smooth chip removal, non‑stick cutting surface, no secondary polishing required. Improve machining efficiency and finished‑part quality greatly.
Chamfered round shank design
3.175mm round shank with chamfer treatment, firm clamping without slipping. Good compatibility for most CNC engraving equipment.
✅ Main Application
Fine engraving, letter marking, 2‑D engraving, 3‑D relief carving. Produces smoke‑free processing without burrs, high working efficiency.
✅ Workable Materials
Copper, aluminum, silver, gold, jade, hardwood, solid wood, acrylic, PVC, density board, double‑color sheet and other plastics & non‑ferrous metals.
✅ Compatible Machines
All types of CNC engraving machines, CNC routers and high‑speed carving equipment.
✅ Available Tip Angles
20°,30°,45°,60°,90°. Rule: Smaller tip angle for finer details; larger oblique angle gets bigger cutting tip.
✅ Recommended Machining Parameters
Spindle speed: 18000‑24000 RPM Feed rate reference: 6000‑8000, feed 80‑100%
✅ Quality Control
Manufactured on industrial‑grade precision grinding machines. Every single tool goes through strict inspection to guarantee consistent precision and reliable quality.
