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What Is a Continuous Rim Diamond Blade? Chip-Free Tile Cutting
A continuous rim diamond blade is a diamond saw blade with a smooth, unbroken cutting edge — no gullets or slots. This design makes it the best choice of general purpose blade for chip-free cutting of brittle materials: ceramic tile, porcelain, marble and masonry.
How It Works
Industrial diamonds are bonded into a solid metal rim by hot-pressing or cold-pressing. Because the edge is continuous, each diamond stays in contact with the material longer, producing a smooth grind-like cut instead of the impact chopping of segmented blades. The trade-off: less cooling and slower cutting on hard structural materials — which is why continuous rim blades prefer wet cutting or intermittent dry cutting.
Best Applications
- Ceramic and porcelain tile — clean, chip-free edges
- Marble and other soft-to-medium natural stone
- Glass tile and delicate decorative materials
- Finish cuts where the edge will be visible
Available Sizes
| Diameter | Rim thickness | Bore | Max RPM |
|---|---|---|---|
| 105 mm (4") | 1.8 mm | 20/22.23 mm | 14,500 |
| 110 mm (4-3/8") | 1.8 mm | 20/22.23 mm | 13,900 |
| 115 mm (4-1/2") | 1.8 mm | 20/22.23 mm | 13,600 |
| 125 mm (5") | 1.8 mm | 20/22.23 mm | 12,200 |
| 150–180 mm (6–7") | 2.2–2.4 mm | 22.23/25.4 mm | 10,200–8,600 |
| 230 mm (9") | 2.6 mm | 22.23/25.4 mm | 6,600 |
Continuous Rim vs Segmented vs Turbo
- Continuous rim: smoothest finish, slowest, coolest only when wet — tile, marble.
- Segmented: fastest, roughest, best cooling — concrete, brick, site work.
- Turbo: the middle ground — fast with a decent finish — granite, mixed work.
Machines
Angle grinders, circular saws, marble saws and tile saws. Always match blade RPM rating to the machine.
FAQ
Can a continuous rim blade cut concrete?
It can, but slowly and with overheating risk. Use a segmented or turbo blade for concrete and reserve continuous rim for tile and stone finishing.
Wet or dry?
Continuous rim blades give their best life and finish wet. Many quality blades are rated wet/dry — dry cutting should be done in short passes with cooling breaks.
Why does my blade glaze on porcelain?
Dense porcelain dulls the bond. Dress the blade on an abrasive block or choose a thin turbo blade designed for hard porcelain.
Related Topics
- Laser Welded vs Sintered Diamond Blades: Which Construction Method Lasts Longer?
- Segmented vs Turbo vs Continuous Rim: The Complete Diamond Blade Selection Guide
- Cutting Disc Size Guide: 4.5" vs 5" vs 7" vs 9" — Which One Do You Actually Need?
- The Best Brand for Brazed Blade
- What Is a Wire Brush Used For? Metal Cleaning & Surface Prep Guide
- Top 5 Flap Disc Factory in China
- Top 10 Cutting Disc Manufacturers in China (2026)
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