FEIN MultiMaster AMM 500 Plus Top AS 18500 RPM 1.3 kg Lithium-Ion

The FEIN MultiMaster AMM 500 Plus Top AS is a cordless oscillating multi-tool powered by an 18 V Lithium‑Ion battery. With an idle speed adjustable between 11,000 and 18,500 RPM and a compact weight of approximately 1.3 kg, the tool is engineered for precision cutting, sanding, scraping and grout removal. The cordless design and variable speed control provide controlled performance across a wide range of materials including wood, metal, plastic and tile.

Advantages

The compact, lightweight construction allows extended use with reduced operator fatigue while the high no‑load speed range supports fast material removal and clean finishing. The Lithium‑Ion battery delivers stable power and consistent performance during demanding tasks. The MultiMaster’s universal accessory interface ensures compatibility with a broad selection of oscillating blades and sanding attachments for rapid accessory changes and versatile jobsite use.

Suitable for

• Precision interior cutting and trimming in wood and panel materials
• Removal of grout, sealant and old adhesives
• Sanding in confined or detailed areas using sanding pads and sheets
• Cutting and shaping plastic, soft metal and composite materials
• Light demolition and renovation tasks requiring a compact cordless tool

Key specifications

• Power source: 18 V Lithium‑Ion battery
• Idle speed range: 11,000–18,500 RPM
• Weight: approx. 1.3 kg (without battery accessories)
• Multi‑tool oscillating motion for cutting, sanding and scraping
• Universal accessory mounting system for quick blade and pad changes

How to use

Fit the appropriate oscillating blade or sanding pad to the accessory interface and secure according to the tool’s mounting method. Set the speed dial to a low setting for precise plunge cuts or delicate materials and increase speed for faster removal on harder substrates. Maintain a steady, controlled feed and allow the tool to reach the selected speed before engaging the workpiece. For sanding, use compatible sanding sheets and apply light, even pressure to avoid overheating the material or the abrasive. Always follow safety measures including the use of eye protection and dust extraction where needed.

Recommendations

Use blades and accessories intended for oscillating multi‑tools and select blade types appropriate to the material (wood, metal, tile, etc.). For battery longevity, avoid full discharge and store the battery in a cool, dry place. When performing overhead or extended‑duration work, consider using auxiliary handles or support to improve control. Regularly inspect accessories for wear and replace them when cutting quality decreases.