The 3M Radial Bristle Disc Master Kit gives professional jewelers and metalsmiths a complete range of miniature radial bristle disc wheels in all three sizes — 1", 3/4", and 9/16" — along with mandrels, in a single comprehensive set. These long-lasting discs work like natural bristle brushes but require no added polishing compound; the abrasive is built directly into the bristles. Simply stack individual discs onto the included pin hole mandrels — four to six discs make an effective brush — and you are ready to work. The flexible bristle construction runs cool, helping prevent heat damage, while delivering a uniform, easy-to-control finish across all stages from aggressive stock removal through final high polish.
Features
- Built-in abrasive compound — no separate polishing compound needed
- Stack multiple discs on a single mandrel to build desired brush width
- Cool-running design helps prevent heat buildup and workpiece damage
- Long-lasting bristles deliver a consistent, uniform finish
- Covers the full finishing sequence from coarse stock removal to final polish
- Includes mandrels for both 9/16" & 3/4" discs and 1" discs
Grit & Grade Sequence Guide
| Grit / Grade |
Color |
Application |
| 36 Grit |
Brown |
Most aggressive — coarsest (1" only) |
| 50 Grit |
Green |
Aggressive (1" only) |
| 80 Grit |
Yellow |
Rapid scratch removal — coarsest of 9/16" & 3/4" |
| 120 Grit |
White |
Light scratch removal |
| 220 Grit |
Red |
Very light scratch removal |
| 400 Grit |
Blue |
Pre-polishing step one |
| Pumice |
Pink |
Pre-polishing step two |
| 6 Micron |
Peach |
Final polishing step one |
| 1 Micron |
Light Green |
Final polishing step two — finest |
What's Included
- 6 × 116.591 — 9/16" Radial Bristle Disc, 120 Grit, White
- 6 × 116.592 — 9/16" Radial Bristle Disc, 220 Grit, Red
- 6 × 116.593 — 9/16" Radial Bristle Disc, 400 Grit, Blue
- 6 × 116.594 — 9/16" Radial Bristle Disc, Pumice, Pink
- 6 × 116.595 — 9/16" Radial Bristle Disc, 6 Micron, Peach
- 6 × 116.596 — 9/16" Radial Bristle Disc, 1 Micron, Light Green
- 6 × 116.581 — 3/4" Radial Bristle Disc, 80 Grit, Yellow
- 6 × 116.581.5 — 3/4" Radial Bristle Disc, 120 Grit, White
- 6 × 116.582 — 3/4" Radial Bristle Disc, 220 Grit, Red
- 6 × 116.583 — 3/4" Radial Bristle Disc, 400 Grit, Blue
- 6 × 116.584 — 3/4" Radial Bristle Disc, Pumice, Pink
- 6 × 116.585 — 3/4" Radial Bristle Disc, 6 Micron, Peach
- 6 × 116.586 — 3/4" Radial Bristle Disc, 1 Micron, Light Green
- 6 × 116.571 — 1" Radial Bristle Disc, 36 Grit, Brown
- 6 × 116.572 — 1" Radial Bristle Disc, 50 Grit, Green
- 6 × 116.573 — 1" Radial Bristle Disc, 80 Grit, Yellow
- 6 × 116.574 — 1" Radial Bristle Disc, 120 Grit, White
- 2 × 143.128 — 3/32" Mandrel
- 2 × 143.158 — 1/8" Mandrel (for 1" diameter discs)
Notes
- This product is subject to California Proposition 65 warnings.