Features
- Carbide-grit coating for abrasion resistance and longer life
- Delta-shaped profile for increased removal area and access to corners
- Starlock three-dimensional mount for high torque transfer and reduced vibration
- Compatible with OIS systems and Starlock multi-tools
- Quick blade change (Starlock system)
- Color-coded interface and laser-etched markings for identification
- Swiss-made manufacturing
Specifications
| Application | Thinset removal |
| Material | Carbide RIFF (carbide grit coating) |
| Blade Length | 3 in |
| Blade Size | 3 in |
| Blade Thickness | 0.125 in |
| Width | 3 in |
| Immersion Depth | 1.5 in |
| Pack Quantity | 1 |
| Interface | Starlock (OIS compatible) |
Related Tools
Related Articles
Delta-shaped carbide-grit rasp for oscillating multi-tools. Intended for removal of thinset, grout and similar materials. Uses the Starlock three-dimensional interface for improved torque transfer and reduced vibration; compatible with OIS-compatible multi-tools. Carbide grit coating for extended wear.
Model Number: OSL300CR
Project Ideas
Business
Corner & Edge Thinset Removal Specialist
Offer fast, low-dust thinset/grout removal focused on hard-to-reach areas—inside corners, toe-kicks, stair nosings, cabinets, and around fixtures. The Starlock delta rasp delivers high torque and control for clean edges. Sell per linear foot and bundle with substrate leveling and haul-away.
Shower/Backsplash Regrout & Refresh
Use the rasp to safely remove hardened grout and caulk from tile corners, niches, and along countertops without cracking adjacent tiles. Regrout, color-seal, and recaulk for a 1-day makeover. Upsell silicone upgrade, sealer, and maintenance plans.
DIY Retile Prep Partner
Target homeowners handling their own tiling: you demo the tile, grind off thinset to clean concrete/CBU, and detail corners and thresholds with the delta rasp. Offer dust containment/HEPA extraction and optional crack isolation membrane install. Flat-rate by room or square foot.
Fireplace & Hearth Modernization
Specialize in removing dated tile/stone from surrounds and hearths, then abrade residual mortar from brick or concrete returns and tight reveals using the delta rasp. Prep for new slab cladding, thin brick, or limewash. Package pricing with design swatches and next-day install slots.
Tile Counter/Tabletop Rehab
Revive tiled counters and tables by stripping old grout/thinset, leveling edges, and retiling or converting to a single-slab inset. The delta rasp works neatly into sink corners, backsplashes, and aprons without removing cabinets. Offer quick turnaround and sealing add-ons.
Creative
Reclaimed Tile Mosaic Wall Art
Salvage old tiles and use the carbide-grit delta rasp to strip thinset from their backs, knock down ridges on the substrate, and crisply shape recesses in cement board for flush inlays. The delta profile lets you clean and sharpen tight angles in geometric patterns before grouting and sealing.
Terrazzo-Look Concrete Coasters/Tray
Cast a thin concrete slab seeded with glass/stone chips, then plane the cured surface with the rasp to expose aggregate and feather edges. The carbide grit handles cement paste cleanly and the triangular tip refines corners of trays and coasters for a hand-textured matte finish.
Sculpted Plaster Relief Panel
Trowel on setting-type compound or lime plaster over a board and, as it firms, sculpt contours and crisp inside corners with the delta rasp. The oscillation yields controlled, granular textures ideal for low-relief motifs or decorative wall tiles; finish with pigment and wax/sealer.
Faux Stone Foam Props
Shape XPS/EPS foam into blockwork, then use the rasp to chamfer edges, score strata, and distress surfaces for realistic stone. The delta tip cleans tight joints and corners in faux masonry; hardcoat with acrylic/cement and paint for theater or cosplay props.
Resin-Grout Garden Stepping Stones
Refresh old mosaic pavers by widening/cleaning grout lines and corner pockets with the rasp, vacuuming dust, then pouring tinted epoxy or UV-stable resin for colorful inlays. The carbide grit quickly cuts thinset/grout and the delta shape reaches tight triangular spaces.