Vacuum Brazed Diamond Core Bit Set - Small Diameter Drilling Bits for Tile & Glass

Applications

Vacuum brazed diamond core bits are made for clean, accurate small-diameter holes in fragile surfaces where ordinary twist or carbide bits tend to chip, crack or burn the material.

• Ceramic wall and floor tiles, including glazed surfaces, for wall anchors, pipe outlets and fittings
• Porcelain and vitrified tiles, where a clean entry and exit hole matters for a neat finish
• Glass, for mirrors, shelving, splashbacks and decorative work
• Marble, granite and other natural stone for small holes in countertops, sinks and backsplashes
• Stone mosaic, terrazzo and similar decorative surfaces
• Bathroom, kitchen and general installation work where small fixing holes are needed in tile or glass

FAQ

What materials are these diamond core bits suitable for?

They are intended for glass, tile, ceramic, stone and similar fragile materials. They are not designed for drilling iron, steel or other metals.

What does "vacuum brazed" mean?

Vacuum brazing bonds diamond grit directly to the steel body of the bit. The diamond layer sits on the working surface rather than being mixed into a sintered segment, which gives the bit an exposed cutting edge from the first hole.

Should I use water when drilling?

Yes. Using water as a coolant and lubricant helps control heat at the cutting edge and flush away debris, which supports cleaner holes and more consistent performance on tile, glass and stone.

Will these bits chip or crack the tile or glass?

Because the cutting action is grinding rather than impact drilling, vacuum brazed diamond bits are a suitable choice for brittle materials. A steady start, light pressure and letting the bit cut at its own pace all help reduce the risk of chipping around the hole.

What drill should I use with this set?

These bits are for rotary drilling at a controlled speed, without hammer action. Always check that the shank of the bit matches your drill chuck before starting, and select a low, steady speed for glass and glazed tile.

How can I get the longest life from the bits?

Keep the bit cool, avoid forcing it, and clear the hole of slurry as you work. Letting the diamond grind the material instead of pushing hard helps preserve the brazed diamond layer.