Radial Discs and Polishing Pins: A 116-Piece Setup Guide

Quick answer

Set up your 116-piece radial disc and polishing pin kit by sorting discs by grit, storing them in the included organizing case, and mounting them on a Foredom quick-change handpiece. Work from coarse to fine grits, using light pressure and keeping separate discs for each metal to avoid cross-contamination.

Why grit order and organization matter

Radial discs and polishing pins work as a system: each grit removes scratches left by the previous one. If you skip a grit or mix them up, you'll spend extra time re-polishing. The 116-piece kit includes multiple grits from coarse to extra fine, so labeling or sorting them before you start saves confusion later. Keep a dedicated disc for each metal type—especially if you work with both silver and gold—because embedded metal particles can transfer and discolor your work.

Setting up your flex shaft handpiece

A quick-change handpiece like the Foredom model lets you swap discs and pins without tools. Before mounting, check that the handpiece is clean and the collet or chuck is free of debris. Insert the mandrel or pin fully, then tighten securely—a loose disc will wobble and leave uneven scratches. Run the motor at a moderate speed (around 10,000–15,000 RPM for most radial discs) and test on a scrap piece of metal before touching your jewelry.

Using radial discs for step-by-step polishing

Start with the coarsest grit you need—often 80 or 120—to remove deep scratches or file marks. Hold the disc at a slight angle to the surface and use light, overlapping strokes. Move to the next finer grit only after the previous scratches are gone. As you progress to finer grits (400, 600, and beyond), reduce pressure and speed. The extra-fine discs (like 6 micron) are for final bright polishing; they won't remove material, so don't use them to fix scratches.

When to use polishing pins instead of discs

Polishing pins are small, pointed tools for reaching inside rings, tight corners, and detailed settings where a disc can't fit. They're also useful for texturing or cleaning hard-to-reach areas. Use pins at lower speeds than discs to maintain control. Because pins are small, they wear down faster—replace them when you notice reduced cutting action or uneven edges. Keep a few spares of each grit on hand for ongoing work.

Storing and maintaining your kit

The included organizing case has labeled slots for each grit, which keeps discs flat and prevents contamination. After each use, brush off metal dust with a soft brush or compressed air. Store the case away from moisture to prevent rust on metal mandrels. If a disc becomes loaded with polishing compound or metal particles, replace it—don't try to wash and reuse it, as that can alter the abrasive.

Step-by-step setup and use

1. Sort discs and pins by grit: Lay out the 116 pieces and group them by grit—coarse to extra fine. Use the included case's labeled slots to keep them organized. Checkpoint: If grits are mixed, you'll risk skipping a step and leaving scratches.
2. Mount the first disc on your handpiece: Attach a coarse disc (80 or 120 grit) to your Foredom quick-change handpiece. Ensure it's secure and centered. Common mistake: Forcing a disc onto a dirty mandrel—clean the mandrel first.
3. Test on scrap metal: Run the handpiece at moderate speed and touch the disc to a scrap piece of the same metal you're polishing. Check for wobble or uneven cutting. Checkpoint: A smooth, even scratch pattern means you're ready to work on your piece.
4. Polish in grit sequence: Work through each grit from coarse to fine, cleaning the surface between grits. Use light pressure and overlapping strokes. Common mistake: Pressing too hard—let the abrasive do the work.
5. Switch to polishing pins for details: For inside rings or tight areas, swap to a polishing pin of the appropriate grit. Use lower speed and a light touch. Checkpoint: Pins should reach areas discs can't; if they don't fit, don't force them.
6. Clean and store after use: Brush off metal dust from each disc and pin, then return them to the labeled slots in the case. Store in a dry place. Common mistake: Storing discs loose—they can warp or contaminate each other.

Product facts

• Radial Discs, Polishing Pins & Points - With Organizing Case (116 piece): 116-piece assortment includes radial discs and polishing pins in multiple grits: 5/8" radial discs in yellow (80 grit coarse), white (120 grit medium), red (220 grit standard), blue (400 grit fine), pink (600 grit pumice), peach (6 micron extra fine), and light green (1 micron). Having a full grit range in one organized case means you can move from scratch removal to final polish without buying separate packs.
• Radial Discs, Polishing Pins & Points - With Organizing Case (116 piece): Designed for use with a Foredom quick-change handpiece. If you already use a Foredom flex shaft, these discs and pins mount directly without additional adapters.