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.
