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How-to Guides 2026-11-12 Pepetools - Precision Engineered Professional Equipment 0 views

How to Use a Magnetic Pin Finisher for Jewelry Polishing

How to Use a Magnetic Pin Finisher for Jewelry Polishing

Learn how to use a magnetic pin finisher like the ARBE Super Finish to polish and finish jewelry. Step-by-step setup, operation, and care tips for professional results.

What a Magnetic Pin Finisher Does

A magnetic pin finisher uses a rotating magnetic field to spin small stainless steel pins inside a bowl. The pins gently burnish and polish jewelry items, reaching crevices that traditional polishing methods often miss. It is ideal for finishing rings, earrings, pendants, and other small pieces without removing fine detail.

The ARBE Super Finish Magnetic Pin Finisher (model KMT-20V) is a compact benchtop unit designed for professional jewelers. It holds up to 30 rings at a time and offers adjustable speed and a timer, giving you control over the polishing process.

ARBE Super Finish Magnetic Pin Finisher at a Glance

  • Magnetic Pin Finisher - 30 Ring Capacity, ARBE Super Finish: Model: KMT-20V, ARBE. Machine Size: 7.25” W x 8.5” D x 10” H. Bowl Size: 5” Dia x 4” H. Capacity: Holds up to 30 rings at a time. These dimensions confirm it fits on a standard workbench and can handle multiple rings in one batch, saving time for production work.
    Magnetic Pin Finisher - 30 Ring Capacity, ARBE Super Finish
    Magnetic Pin Finisher - 30 Ring Capacity, ARBE Super Finish
  • Magnetic Pin Finisher - 30 Ring Capacity, ARBE Super Finish: Timer: Adjustable from 0 to 60 minutes. Speed: Variable speed control ranging from 0 to 3450 RPM. The timer and variable speed let you match the polishing intensity and duration to the piece you are finishing, preventing over-polishing.
  • Magnetic Pin Finisher - 30 Ring Capacity, ARBE Super Finish: Available only in 110V with a US plug. International customers must confirm voltage before purchasing. Voltage compatibility is critical: using the wrong voltage can damage the unit or create a safety hazard.

How to Set Up and Use the Magnetic Pin Finisher

Follow these steps to get started with your magnetic pin finisher. The supplied instruction manual provides additional safety and operating details.

  1. 1. Prepare the machine: Place the finisher on a stable, level workbench. Ensure the power switch is off before plugging the unit into a grounded 110V outlet. Attach the transparent bowl and lid as shown in the manual.
  2. 2. Load the pins and jewelry: Fill the bowl with the recommended amount of stainless steel polishing pins. Place your jewelry pieces into the pins, ensuring they are fully surrounded. Do not overload: the unit holds up to 30 rings at a time.
  3. 3. Set the timer and speed: Turn the timer knob to the desired duration (0 to 60 minutes). For initial use, start with a shorter time and check progress. Adjust the speed dial between 0 and 3450 RPM — lower speeds for delicate pieces, higher for more aggressive polishing.
  4. 4. Start the cycle: Press the power switch to start. The magnetic field will spin the pins, creating a gentle tumbling action. Listen for smooth operation; if you hear unusual noise, stop and check the load.
  5. 5. Unload and clean: When the timer stops, remove the lid. Use a non-magnetic tool or your fingers to separate the jewelry from the pins. Rinse the pieces under warm water and dry thoroughly. Store pins in a dry place to prevent rust.

Tips for Best Results

Always start with clean, pre-polished jewelry to avoid transferring dirt into the pin bed. For multiple pieces, ensure they do not nest or tangle — rings should be separated. Use the variable speed to find the sweet spot for your specific metal and design. If results are uneven, increase the time rather than the speed to avoid damaging fine details.

The supplied evidence does not include specific pin types or lubricant recommendations. For best results, use pins designed for magnetic tumblers and follow the manufacturer's guidelines in the instruction manual.

What This Unit Does Not Include

The magnetic pin finisher comes with the transparent bowl, lid, power cord, and instruction manual. It does not include polishing pins, jewelry pieces, or a voltage converter for international use. You will need to purchase stainless steel polishing pins separately. The unit is available only in 110V with a US plug, so international customers must verify voltage compatibility before purchasing.

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