PROXXON 28547 Review

A full-size angle grinder is a blunt instrument. For cutting delicate brass tubing in a model steam engine, grinding a precise bevel on a jewellery finding, or smoothing a weld inside a confined scale model chassis, a 125 mm grinder is not just too big — it is actively dangerous to the workpiece. This is the territory of the precision long-neck angle grinder, a specialist tool that scales down every aspect of the angle grinder format. The motor is a modest 100 watts, the discs are 50 mm in diameter, the speed is a rapid 13,000 RPM to compensate for the small disc circumference, and the entire tool weighs just 550 grams — less than a third of the lightest compact grinder. The long neck extends the grinding head away from the motor body on a slim shaft, allowing the disc to reach into recesses, between assemblies, and along internal seams that no standard grinder could access. For model makers, precision engineers, jewellers, and anyone who works with small metal, plastic, and wood components, a long-neck grinder is not a scaled-down version of a workshop tool — it is a purpose-designed instrument for fine, controlled material removal at a miniature scale.

Long-neck angle grinders are a distinct niche within the grinding world, occupying the space between a rotary multi-tool — like a Dremel — and a compact 115 mm angle grinder. They combine the right-angle disc orientation of a grinder with the slim, extended reach of a die grinder or rotary tool, allowing cutting and grinding discs to be presented to the workpiece in spaces where the bulk of a standard grinder body would not fit. PROXXON is a German brand specialising in precision tools for model making, fine mechanics, and hobby engineering — their tools are designed for accuracy, control, and light material removal rather than raw power. The 28547 long-neck grinder uses a 100-watt motor driving 50 mm discs at 13,000 RPM, with a cast aluminium transmission head for rigidity and a fibreglass-reinforced polyamide body for light weight and electrical insulation. Unusually for a tool in this class, it includes a disc brake that stops the disc in under a second.

This review examines a 100-watt long-neck angle grinder from PROXXON, accepting 50 mm discs, with a sub-1-second disc brake and a weight of just 550 grams. With 408 reviews averaging 4.2 out of 5 stars, we evaluate its precision, control, and access for fine metalwork, model making, and detail grinding applications where full-size grinders are completely unsuitable.

The PROXXON 28547 is a long-neck angle grinder powered by a 100-watt motor spinning at 13,000 RPM, accepting 50 mm diameter cutting and grinding discs. It weighs just 550 grams and measures approximately 27 cm in length — the long, slim neck extends the grinding head forward from the motor body, allowing the small disc to reach into confined spaces. The transmission head is cast aluminium for rigidity and heat dissipation. The main body is made from fibreglass-reinforced polyamide — a strong, lightweight plastic with double insulation (Class II) for electrical safety. The tool operates on 220 to 240-volt mains power.

The 50 mm disc format defines the tool's precision character. At this scale, the grinder is designed for fine work: cutting small-diameter brass, aluminium, and copper tubing; trimming plastic model components; grinding delicate weld beads on miniature fabrications; and deburring machined parts where even a 115 mm grinder would remove too much material. The 13,000 RPM speed provides effective disc surface speed despite the small diameter — the cutting performance on thin materials is surprisingly capable for a 100-watt tool. The disc brake — an unusual feature at this size and price — stops the disc in under a second, which is valuable for precision work where the operator frequently sets the tool down between cuts.

The long-neck design is the ergonomic differentiator. Unlike a standard grinder where the motor body is directly behind the disc, the PROXXON's slim neck extends the grinding head approximately 10 to 12 cm forward. This allows the disc to reach into engine bays on scale models, between closely spaced components on miniature machinery, and along internal seams on small fabrications. The 550-gram weight allows the tool to be held like a pen for maximum control — it is lighter than many cordless drills. The slim body diameter accommodates a pencil grip for fine manoeuvring. The power cord exits from the rear and is light enough not to interfere with delicate positioning.

Customer feedback across 408 reviews averages 4.2 out of 5 stars, with a bestseller ranking of number 32 in Angle Grinders — an impressive position for a niche precision tool. Users in the model engineering, jewellery, and fine metalworking communities praise the access provided by the long neck and the control offered by the light weight. Common applications cited include modifying radio-controlled car chassis, cutting brass for model locomotives, grinding welds on scale armour, and trimming plastic kit parts. Criticisms focus on the power — 100 watts is adequate for the tool's intended fine work but will not satisfy users expecting compact-grinder material removal rates — and the price, which reflects PROXXON's precision-engineering brand positioning.

The PROXXON 28547 long-neck angle grinder is the specialist precision tool for model makers, jewellers, fine metalworkers, and hobby engineers who need controlled grinding and cutting access in confined spaces — where a full-size grinder is too large and a rotary tool lacks the right-angle disc orientation.