3" Resin Polishing Pad - 30 Grit

- Most aggressive grit in the 3" resin polishing line — 30 grit is below the standard 50-grit "coarsest resin" tier, designed as a pre-polish prep pad rather than part of the standard polishing sequence. Used to open the surface for stains, sealers, and thin-mil coatings, or to clean up minor scratches left by a coarse metal-bond pass on detail work before transitioning to standard resin polishing.

- Compact 3" diameter for the tightest detail areas — the 3" footprint is engineered for spots where even a 5" pad can't reach: tight inside corners, narrow recessed bands, around plumbing penetrations, on countertop edges and bullnoses, and on stair treads. At 30 grit specifically, this is the prep pad for countertop edges and detail areas before stain or coating application — opens the surface enough for the coating to bond without dropping back to a metal-bond approach.

- Wet/Dry resin-bonded construction — diamonds are bonded in a resin matrix that wears progressively to keep fresh cutting points exposed. Usable wet or dry: wet polishing reduces heat and extends pad life, dry polishing is more convenient for small detail work without water access.

- Requires a 3" backing pad with hook-and-loop attachment — the standard mount is a 5/8"-11 threaded backer for hand polishers, or an M14 backer for grinders with metric spindles. The backer's diameter must match the pad's diameter — never run a 3" pad on a 4" or 5" backer (exposed hook-and-loop at high RPM is a safety hazard). Most variable-speed hand polishers run 3" pads optimally in the 1,500–3,000 RPM range.

- The "prep for stain or coating" pad for detail work — per industry guidance, 30-grit resin is commonly used to open a surface's pores ahead of stain, dye, low-solids sealer, or thin-mil coating application. The pad creates enough surface profile for the coating to penetrate and bond, without grinding so deep that a metal-bond approach would be needed. On a 3" pad, this is the practical edge-prep choice when the main surface is being prepped with larger walk-behind or 7" tools.