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Solid Carbide Burr with Polished Surface, Rotary Burrs for Fine Work
Polished-flute carbide burrs – the flutes are polished after grinding so chips slide and the finish comes out finer.
Design and Construction — a VPOINT tungsten carbide burr bit in the standard SA–SM head-code system, sized for aluminium (Aluma-cut) 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
A polished-surface line: after grinding, the flutes are polished to remove grinding marks, so chips slide out instead of packing and the cut leaves a finer finish. Same YG carbide and geometry as the standard line – the difference is the surface.
How It Works
The polished flank reduces chip adhesion; at equal speed the cut looks cleaner and the burr stays sharp longer in gummy alloys.
Applications
Fine finishing, aluminium and brass work, visible surfaces, jewellery-scale shaping.
Field Cases
- Aluminium fabricator: polished flutes resisted chip welding on 6061 brackets.
- Brass fitting shop: finer as-cast finish straight off the burr – less hand blending.
- Jewellery bench: polished heads left surfaces that needed only tripoli.
Performance Data
| Metric | Value / Observation |
|---|---|
| Finish note | Polished flutes reduce chip adhesion – the main cause of rough finish in soft alloys |
| Hardness | 1,300-1,500 HV with polished flanks |
| Speed reference | About 40,000 RPM starting at 6 mm in aluminium |
| Life note | Less adhesion means less edge loading – longer intervals between cleans |
Suitable Materials
Aluminium, brass, copper, plastics and steel.
Material Comparison: Polished Flutes vs Standard Ground Flutes
What polishing changes on the same geometry:
| Factor | Polished (this burr) | Standard Ground |
|---|---|---|
| Flute surface | Polished – chips slide | Ground – micro-marks hold chips |
| Chip adhesion | Lower | Higher on soft alloys |
| Finish left | Finer | Good but rougher |
| Cleaning interval | Longer | Shorter |
| Best materials | Aluminium, brass, plastics | Steel, cast iron |
Delivery Scope
Burr in plastic tube; polished and standard versions ship together for comparison.
Why Choose VPOINT
Polishing is done in-house after grinding – the step most mills skip.
Precision & Quality Control
Surface finish of flutes sampled per batch alongside geometry.
Specifications
Standard specifications:
| Item | Specification |
|---|---|
| Flute finish | Polished after grinding |
| Shank | 6 mm (1/4″) |
| Head material | YG carbide |
| Cut type | Double cut |
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.
Is polishing just looks?
No – it reduces chip adhesion, which is what makes soft-alloy cuts rough.
Steel too?
Yes, but the biggest gain is on aluminium and brass.
Same geometry as standard?
Yes – only the surface differs.
Repolish after regrind?
Available on request.
Which shapes?
The polished line covers the common families.
Related Search Terms
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＋Key words: carbide rotary burr, rotary burr set, double cut carbide burr, aluminium cut burr, tire reamer bit, burr blanks, carbide burr 6mm shank, TiAlN coated burr, rotary file, carbide burr for steel, carbide burr for aluminum, reversible knives, rota-tip bit, constant cutting diameter, rotate insert 90 degrees, double the cutting life, on-machine knife change, ER collet, 1/2-inch shank insert bit, metal deburring, weld seam removal, weld cleanup, weld bead blending, weld bevel prep, porting cylinder heads, engine port work, casting cleanup, mould and die work, mold polishing, fabrication cleanup, plasma-cut edge smoothing, mill scale removal, rust removal, tube notching, exhaust weld grinding, frame repair, tool and die, art metalwork, knife making, steel deburring, stainless steel finishing, cast iron repair, aluminum porting, non-ferrous shaping, hardened steel grinding
Sources & standards: ISO 9001 quality management · UNSPSC commodity codes · eClass product classification
