Features
- StarlockMax three-dimensional mount for improved torque transfer and reduced vibration
- Quick blade change (tool-free) — reported blade change in about 3 seconds
- Extra-deep cutting capacity for soft materials
- Fits oscillating multi-tools from multiple brands
- High-carbon steel construction
- Swiss-made for precision manufacturing
Specifications
| Material | HCS (high-carbon steel) |
| Width In | 3.25 |
| Intended Use | Sealant removal / cutting & scraping with oscillating multi-tools |
| Model Number | OSM314K |
| Order Number | 2608666070 |
| Pack Quantity | 1 |
| Mount Interface | StarlockMax |
| Immersion Depth In | 1.5 |
| Country Of Manufacture | Switzerland |
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3-1/4 inch oscillating sealant knife blade designed for removal and cutting of sealants and similar soft materials. Uses the StarlockMax three-dimensional interface for higher torque transfer and reduced vibration. Made in Switzerland from high-carbon steel. Compatible with StarlockMax oscillating multi-tools and fits many common multi-tool brands.
Project Ideas
Business
Bathroom Caulk Refresh Service
Offer fast, clean removal of old caulk around tubs, showers, and sinks and reseal with premium mold-resistant silicone. Price per fixture or linear foot with a 12–18 month workmanship guarantee; upsell stain/mildew treatment and shower door sweep replacement. The StarlockMax blade change and low vibration reduce time on-site and mess.
Window & Door Weather-Seal Upgrades
Seasonal service to cut out failed exterior/interior sealant and install high-performance, paintable sealants for energy savings and leak prevention. Charge per opening with bundle pricing for whole-home packages; offer annual inspection plans and optional thermal imaging reports to show before/after air-seal improvements.
Mobile RV and Marine Resealing
Provide on-location resealing of RV roof seams, windows, and marine hatches/portlights. Use the sealant knife for controlled removal on curved substrates, then install UV- and salt-resistant sealants. Flat-rate packages by length/number of openings with travel fee; partner with marinas and campgrounds for recurring referrals.
Commercial Storefront & Curtain Wall Reseal
After-hours service to remove failing sealant from aluminum/glass joints and reapply commercial-grade sealants for weather proofing and energy efficiency. Offer maintenance contracts with scheduled inspections; price by linear foot and elevation complexity. Emphasize minimal disruption, debris control, and documented QA photos.
Aquarium Reseal & Leak-Test Shop
Specialize in removing old silicone from aquariums and sumps, resealing with aquarium-safe silicone, and performing 24–48 hour leak tests. Tier pricing by tank size with pickup/delivery options; offer custom baffles and overflow mods. Market to hobby shops and reef clubs; provide care sheets and limited warranty.
Creative
Silicone Relief Tile Art
Lay colored silicone caulk onto ceramic or glass tiles, then use the oscillating sealant knife to sculpt grooves, ridges, and crisp edges for a tactile, waterproof relief mural. Once cured, assemble the tiles as a backsplash or shower accent that resists moisture and cleans easily.
LED Diffusion Light Panels
Create custom LED diffusion by applying clear/opal silicone over acrylic light channels and, after curing, use the sealant knife to shave textures (striations, facets, dot matrices) that scatter light beautifully. Frame as backlit wall art or under-cabinet lighting with unique glow patterns.
Aquarium Rockscape Backdrops
On acrylic sheets, build up layers of aquarium-safe silicone and carve naturalistic rock and cave textures with the sealant knife for a custom tank background. The soft-material control lets you form crevices and ledges that look organic and are easy to clean once installed.
Waterproof Outdoor Mosaic Grout Effects
Use neutral or colored silicone between mosaic pieces set on a weatherproof board, then refine the joints and transitions with the oscillating knife for even depths and decorative chamfers. The result is a flexible, weather-resistant mosaic suited for patios and garden walls.
Custom Shower Niche Patterns
Mask designs in a shower niche, lay contrasting silicone beads, and use the sealant knife to trim perfect channels and edges for geometric inlays. This creates durable, mold-resistant decorative accents that match hardware or tile themes.