RTC Diamond Flap Discs — Grind With Finesse, Not Guesswork

A standard grinding wheel bites hard and gouges, which is the last thing you want when you're refining a visible edge. RTC Diamond Flap Discs use layered diamond-abrasive flaps that make gradual contact for a smoother, more controlled grind — leaving a refined, even edge that resists gouging and is easy to polish or finish. They run cooler than traditional grinding wheels too, which means less burning and micro-chipping and longer disc life.

They're made for prepping miters, softening cut edges, truing factory sides, and removing small imperfections on large-format tile, rectified tile, porcelain, and stone. When one glazes over, refresh it with the Rockin Red Dressing Stone; pair with the Porcelain Pro bits to round out your diamond kit.

Why Tile Pros Choose It

• Controlled grind: Layered diamond flaps make gradual, smooth contact
• Refined edge: Resists gouging, easy to polish or finish
• Runs cool: Less burning and micro-chipping than grinding wheels
• Longer life: Cooler cutting means more discs per job
• Real uses: Miters, cut edges, truing factory sides, imperfections
• For hard tile: Large-format, rectified tile, porcelain, and stone
• Finesse over brute force: The grind that doesn't leave you sanding out gouges

Pro tip: Let the disc do the work with light, sweeping passes — leaning in defeats the gradual-contact design and risks the gouging you bought the disc to avoid. Keep it moving so it runs cool and leaves a polish-ready edge.