Design and Construction — a VPOINT tungsten carbide burr bit in the standard SA–SM head-code system, 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

Type F (ball-nose cylinder) in four head diameters: 6, 8, 10 and 12 mm on 6 mm shanks. The same ball-nose geometry scaled across the ladder – pick the size, keep the behaviour.

How It Works

The ball nose rolls through concave work; larger heads plane wider blends at lower RPM (about 50,000 starting at 6 mm, about 25,000 at 12 mm).

Applications

Concave blending, fillet dressing, die work and fabrication radii at any scale.

Field Cases

• Die shop: F6 for fillets, F12 for cored pockets – one geometry across the die.
• Fabricator: F10 blended a 15 mm radius in two passes.
• Maintenance: the ladder covered pump-casing fillets from 6 to 12 mm without custom orders.

Performance Data

Suitable Materials

Steel, cast iron, stainless steel and non-ferrous metals.

Material Comparison: F6 vs F8 vs F10 vs F12 – Choosing by the Job

The same ball nose at four sizes – typical industry data:

Delivery Scope

Each size tube-packed with its diameter; full ladder stocked.

Why Choose VPOINT

A published ladder replaces trial-and-error with a number.

Precision & Quality Control

Each diameter checked against the size table before packing.

Specifications

Ladder information:

Frequently Asked Questions

Which head code do I need?

＋The SA–SM code defines the contour: SA cylinder, SC ball-nose end, SD ball, SF tree-pointed, SH tree-radius, SL tree-tapered, SM cone. Match the contour to the cavity or corner you are shaping.

Can I use one burr across different metals?

＋Yes with the right flute style — double-cut for steel and iron, Aluma-cut for aluminium and soft non-ferrous. Swapping styles between jobs keeps edges clean.

Are custom shanks or head sizes available?

＋Yes — non-standard head diameters, shank sizes and logo marking are produced to order from drawings.

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