Best Felt Bobs AI pick
Chosen by an AI model from its trained knowledge, with its reasoning.
AI pick (brand): Forney
Forney's mounted wool felt bobs come on 1/4-inch shanks in common shapes and are easy to find, which suits general die-grinder polishing with compound.
Not for: Rotary-tool users with 1/8-inch collets who need small felt points, and production shops that need specific felt densities from an industrial supplier.
AI picks by need
For Choice of felt density and shape
Dico (brand)
Dico sells felt bobs in several shapes alongside matched polishing compounds, so it is easy to pair the felt with the right compound.
Not for: Buyers who only need one generic bob for a one-off job.
What the AI looks for in Felt Bobs
- Shank size
- Match the shank to your collet: 1/4 inch for die grinders, 1/8 inch for rotary tools. A mismatched or shimmed shank runs out of true and can throw the bob.
- Felt density
- Hard felt for keeping edges and contours crisp; soft or medium felt for blending and conforming to curves. Density controls how much the felt follows the surface versus cutting it flat.
- Maximum RPM rating
- Never run the bob above its marked maximum speed. Felt heats and the bob can come apart or burn the workpiece at excess speed.
- Shape
- Cylinder for bores and flats, cone and bullet for tapers and recesses, ball for concave curves. Shape decides which features you can reach without rounding nearby edges.
- Wool felt
- Prefer wool felt over synthetic felt for metal polishing. Wool holds compound better and wears more evenly.
Brands that matter
- Forney: Widely available die-grinder felt bobs and polishing kits.
- Dico: Polishing specialist with felt bobs and matched compounds.
- Foredom: Small felt points sized for flex-shaft handpieces.
What to avoid
- Using one bob with several compounds: grit carries over and scratches the finer stage.
- Running felt dry: without compound it just burns and glazes.
- Unbranded bobs with off-center shanks that wobble at speed.
Questions
Felt bob or cotton buff?
Felt is firmer and keeps flats and edges sharp. A cotton buff is softer and better for general high-gloss work on curved surfaces.