The Rubi 52938 Full Bullnose is a precision-engineered grinder accessory designed to produce smooth, fully rounded edges on the cut faces of ceramic, porcelain and natural stone tiles. Spanish-engineered by Rubi — a manufacturer whose tile-cutting tools are specified by professional tilers across Europe — this profile wheel converts a standard 115mm angle grinder into a controlled, full-radius edge-shaping tool.

The full bullnose profile rounds both corners of the tile edge into a continuous 180° radius — the premium finish detail used on step nosings, pool surrounds, exposed worktop fronts, balcony edges and other locations where the tile edge is both visible and exposed to handling. With progressive passes and steady pressure, the diamond profile shapes the tile face without the chipping, burn marks or hot spots typical of free-hand grinding.

Designed for both wet and dry use, allowing tilers to flush dust on prolonged production runs or to work dry for occasional on-site adjustments and finishing. The result is a manufactured-quality fully rounded edge produced on site, eliminating the cost and lead time of factory-profiled tiles.

Key features

• Diamond-coated full bullnose profile — 180° fully rounded tile edge
• Designed for use with standard 115mm angle grinders
• Wet or dry cutting — flexible production or site use
• Suitable for porcelain, ceramic, marble, granite and natural stone
• Spanish-engineered Rubi quality — European professional tiling standard
• Produces factory-grade fully rounded edges on site — no specialist machinery

Suitable for

• Step nosings, threshold details and stair tile edges
• Pool surrounds, spa edges and wetroom step detailing
• Exposed worktop fronts and bar-top tile edges
• Balcony copings and external tiled edge details
• Trade tilers, stone fabricators and bespoke installation contractors

For matching diamond cutting and profiling tooling, browse the full tile drill bits and blades range.