Product Overview
Ceramic Abrasive Deburring and Polishing Wheel with 1/16 Inch Arbor
Condition
Unused new old stock (NOS). Marking legible: 3M. Sold individually.
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Product Overview
3M Scotch-Brite radial bristle disc, manufacturer part number 7100138342. Molded from flexible polymer embedded with ceramic abrasive grain, this 3/4-inch wheel cleans, deburrs, blends, and polishes intricate metalwork, wood, and jewelry castings without the safety hazards of wire shedding.
Key Features
- Molded Type C curved bristles deliver consistent cutting action while conforming to complex contours
- Ceramic abrasive grain distributed uniformly throughout each bristle for even wear down to the hub
- 3/4-inch (19 mm) outer diameter suited for detailed benchtop and industrial finishing
- 1/16-inch center arbor hole mounts on standard rotary tool screw mandrels
- Maximum operating speed rated to 35,000 RPM
- White disc body indicates 120-grit medium abrasive grade
Applications
- Deburring small machined aluminum parts and cleaning tight recesses on precision fabrications
- Blending tool marks and polishing detailed jewelry castings at the jeweler's bench
- Cleaning oxidation from electrical contacts and refining intricate wooden carvings
Frequently Asked Questions
What tool does this disc mount on?
The disc features a 1/16-inch center arbor hole designed to mount on a standard miniature screw mandrel used in rotary handpieces and die grinders.
Can multiple discs be stacked together?
Yes. Multiple radial bristle discs can be stacked on a single mandrel screw to widen the contact face for faster blending across broader surfaces.
Which direction should the curved bristles face when mounting?
The curved tips should trail behind the direction of rotation so the bristles sweep smoothly over the surface without snagging. More pieces cost less each - the price-break table on this page shows what each quantity costs.
Unlike wire wheels that shed flying needles across the bench, these ceramic-filled bristles grind steadily down to the hub, keeping your detail work clean and your knuckles intact.
