Rotary burr cutter Proxxon 27116 — 3 mm shank for aluminium, brass, metal, plastic, steel

The Proxxon 27116 rotary burr cutter with a 3 mm shank is designed for precision machining and deburring of a wide range of materials including aluminium, brass, various metals, plastics and steel. The tool features a two-flute, fishtail profile that permits cutting to the centre and supports boring operations. It is intended for use in hand-held rotary tools or small drills where controlled shaping, smoothing, chamfering and removal of flash or welds are required in metalworking, model making and fine repair tasks.

Advantages

The two-flute fishtail geometry provides efficient chip evacuation and allows the cutter to work into centre holes for boring. The 3 mm shank ensures compatibility with many compact rotary tools and small drills that accept that shaft diameter. The cutter's design supports use on a variety of substrates — from aluminium and brass to steels and selected plastics — which makes it versatile for workshop and hobby applications.

Suitable for

• Precision deburring and chamfering of metal parts
• Shaping and trimming in model making and prototyping
• Removing flash, weld seams and excess material
• Light boring and enlarging of centre holes
• Working on aluminium, brass, steel and certain plastics

Key specifications

• Shank diameter: 3.0 mm
• Cutting geometry: two-flute, fishtail profile (cuts to centre)
• Suitable materials: aluminium, brass, steel, cast iron variants, plastics, glass, carbon fibre
• Typical applications: machining, deburring, chamfering, shaping, boring

How to use

Secure the 3 mm shank in the collet or chuck of a compatible rotary tool or small drill and ensure the cutter is clamped firmly. Select an appropriate rotation speed for the material — generally higher speeds for softer non-ferrous metals like aluminium and lower speeds for harder steels and cast iron. Apply light, steady pressure and use short passes to avoid overheating or loading the flutes. For plastics and composite materials, reduce speed and avoid excessive friction to prevent melting or delamination. Wear suitable eye protection and follow the tool manufacturer’s safety guidance.

Usage recommendations

Inspect the workpiece and cutter before each use, keep cutting edges clean from debris, and allow the cutter to cool between extended passes. Use cutting lubricant on ferrous materials when appropriate and replace the cutter if signs of wear or chipping appear to maintain precise results.