Raimondi Pro Bit Hole Saw 7mm$28.99
Raimondi Porcelain Pro Drill Bit 1/4"
Superior quality bits for coring/drilling hard material, such as Porcelain or Granite
For use with handheld drill
Drill press (cordless drill not recommended USE WET ONLY
Size- 1/4" / 7mm
RPM - 800 - 2500
How to use
Put tile/plate on solid non-slip base such as wood or concrete plate. Drop water on area where hole is to be made
Start drilling hole at 75- 85 angle to bite into the tile to a depth of 1-2mm (1/16")
Hold drill at 90 angle and swing 5 - 10 to finish drilling. Use very little pressure. Do not push straight down. Make sure water is sufficient to wet bit.
Clean out debris after drilling hole