Tungsten carbide spade bits are designed for drilling or rough boring holes through common construction lumber – both treated and untreated.They also do very well through sheet goods (Plywood, OSB, Forming Plywood).

 

They tend to cause splintering when they emerge from the workpiece. Woodworkers avoid splintering by finishing the hole from the opposite side of the work. Spade bits are flat, with a centering point and two cutters. The cutters are often equipped with spurs in an attempt to ensure a cleaner hole. With their small shank diameters relative to their boring diameters, spade bit shanks often have flats forged or ground into them to prevent slipping in drill chucks. Some bits are equipped with long shanks and have a small hole drilled through the flat part, allowing them to be used much like a bell hanger bit Intended for high speed use, they are used with electric hand drills. Spade bits are also sometimes referred to as "paddle bits".

 

Top 5 Applications for Tungsten Carbide Spade Bits

 

1.Electricians drilling through wall studs for electrical wiring

2.Plumbers drilling through wall studs and top plates of walls to install copper or PVC

3.Drilling through floor joists for wiring

4.Drilling treated plates for foundations

5.Drilling treated decks to attach a deck ledger board to a wood-frame