Rubi MINIGRES Wet Diamond Hole Cutter

Rubi MINIGRES Diamond Hole Cutters are ideal for drilling stoneware tiles, porcelain tiles and pieces of granite and marble. They are perfect for the installation of accessories and decorative items.

The diamond tip of the MINIGRES Hole Cutters is sintered and joined to the drill bit body by laser welding. MINIGRES diamond tips must ALWAYS be used water-cooled and with a non-percussive power drill. The use of the drill HEAD with a 1/2" thread (ref. 04937) and SWIVEL COUPLING (ref. 50907) is essential. The average life of the MINIGRES diamond tips is around 40 holes* and ALWAYS depends on the type of material, its thickness, proper cooling and use. The drilling depth of MINIGRES diamond tips is 35 mm. The MINIGRES diamond tips have no side opening for solid waste disposal, so before making a new hole, you must ensure that the drill bit is clean and free of any obstruction. The maximum speed of use for MINIGRES tips is 1200 rpm. For a better finish and a longer drill bit life, it is important to respect the proper rotation speed and exert moderate pressure during drilling.