10 Pieces Lot of 5/16 inch Diamond Drill Bit Set
Set of 10
High-quality DIY standard diamond drill bit (hole saw). Diamond-coated tip goes through Tiles, Glass, Fish Tanks, Marble, Granite, Ceramic, Porcelain, Bottles, and Stones
Here is how you could use water to keep the tool cool:
a- You can build a mini water dam around the hole with plumbers putty.
b- You can choose to spray water on the drill bit.
c- Or you can use running water to cool the drill bit.
EASY TO USE
Center pilot drill bits are for wood, metal, etc.; Here is how you can keep the drill bit on target:
a- You can make your own guide out of plywood – plastic or even cardboard. All you need is to keep the drill bit in place until it makes the initial marks.
b- You can start drilling at an angle, with the edge of the drill bit making a C slot and then getting the drill bit up to vertical.
c- You can manually guide the drill bit with a wet sponge.