Design and Construction — a VPOINT cone-shape carbide burr for chamfer cleanup and taper work, sized for steel / stainless welds and similar work. YG8 carbide at HRA 89–91; die-grinder reference speeds are in the performance table below, with the flute-style guidance in the FAQ. ISO 9001 production, batch-verified, custom sizes from drawings.

Design and Construction

Cone heads specified for multi-duty bench work: coarse enough to grind metal, fine enough to carve at high RPM, and capable of a polishing pass with compound at feather pressure. The technique map ships with the bit.

How It Works

Duty is a dial, not a tool change: speed and pressure select the behaviour – grind at 30,000 RPM, carve at 45,000 RPM nose-only, polish at top RPM with compound.

Applications

Art metalwork, jewellery support, model engineering, small-part finishing.

Field Cases

• Art smith: one cone ground, carved and polished a bronze fitting in one session.
• Model shop: three setup changes eliminated per part.
• Jewellery support: the map made the technique teachable.

Performance Data

Suitable Materials

Bronze, brass, aluminium, silver, steel and plastics.

Standard reference values for guidance only — always adjust to the workpiece material, the machine spindle speed and the feed, and confirm on the actual part.

Material Comparison: The Speed-Pressure Duty Map

How one cone switches behaviour:

Delivery Scope

Bit in tube with duty map card.

Why Choose VPOINT

Three duties on one head – the small-work multiplier.

Precision & Quality Control

Nose fineness and flank profile checked per batch.

Specifications

Multi-duty information:

Frequently Asked Questions

Which cone angle for a countersink cleanup?

Match the burr angle to the countersink: 90° for standard screw seats, 60° for narrower chamfers, 30° for gentle tapers — one-pass edge breaks on cast iron and steel.

Cone or inverted cone?

Standard cone widens toward the tip for chamfer work; the inverted cone widens toward the shank and reaches into angled pockets.

Which cut style on cast iron?

Double-cut clears the abrasive chips fast; single-cut leaves a smoother finish on the tapered wall.

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