Bona Abrasives & Sanding Media
4 Bona abrasive lines covering primary sanding (ceramic), intercoat abrasion (diamond + Scrad pads), and edge work (edger discs). Use this page to pick the right grit sequence for a drum-sander + edger spec.
Bona 8700 Ceramic Abrasives
Typical grits: 36, 40, 50, 60, 80, 100, 120
Stage: primary-sanding
Steps: coarse-level, medium-pass, fine-pass
Machines: Bona PowerDrive, Bona FlexiSand, belt drum sander
aggressive material removal on hardwood (coarse grits); finish-prep (finer grits)
Ceramic grain is cooler-cutting and longer-lasting than aluminium oxide. Bona's '8700' series is the professional multi-grade.
Bona Diamond Abrasives
Typical grits: 35-grit-equivalent, 80-grit-equivalent, 120-grit-equivalent, 240-grit-equivalent, 400-grit-equivalent, 800-grit-equivalent
Stage: abrasion / intermediate / fine finish
Steps: between-coat, intercoat-abrasion, matte-gloss-control
Machines: Bona FlexiSand, Bona Quattro plate, Bona PowerDrive (diamond drive plate)
intercoat abrasion without removing finish; polishing; achieving low-sheen through mechanical matting
Diamond abrasives cut without raising grain the way ceramic paper can. Key for recoat prep on existing Bona finishes.
Bona Edger Discs
Typical grits: 24, 36, 40, 60, 80, 100, 120
Stage: edge-sanding
Steps: edge-leveling, edge-refinement
Machines: Bona ErgoEdge, Bona disc edger, hook-and-loop edger
sanding along walls, in corners and under skirting where the main machine cannot reach
Match grit to the main-floor grit sequence so edge and field blend seamlessly (typical sequence 40 -> 60 -> 80 -> 100 -> 120).
Bona Scrad System
Typical grits: 100, 150, 180, 220
Stage: intercoat-abrasion
Steps: intercoat-abrasion, recoat-prep, final-prep-before-topcoat
Machines: Bona FlexiSand, Bona PowerDrive (Quattro plate), rotary buffer
flat, uniform abrasion of a cured coating before overcoating -- produces even key without grain tear
Scrad pads wrap around the Quattro drive plate. The Bona maintenance literature specifies Scrad for between-coat keying when a floor is being refurbished with Refresher or overcoated.
Typical grit sequence (drum + edger)
- Pass 1 (diagonal / 45° to grain): Ceramic grit 36-50 depending on species hardness and floor condition (lower for Turpentine, Ironbark; very uneven floors)
- Pass 2 (along grain): Ceramic grit 60-80 to remove pass-1 scratches
- Pass 3 (along grain, fine): Ceramic grit 100-120; FWPA recommends finishing to 120 before coating
- Edge work: match each pass with the same-grade Edger Disc on the ErgoEdge / disc edger
- Between coats: Scrad pad (100-220) for flat key, or Diamond Abrasive for lower-sheen control