One of the more specialized types of drilling applications is dowel pin drilling. These drill units are typically used for larger-scale outdoor drilling such as road or airport construction or repair.

Pro Tip: With a marker or piece of tape, put a mark on your spade bit 1/4-inch up to show how deep to drill your hole. On the top board insert the six-inch dowels into the one-inch holes on each ...

Dowels are a useful woodworking technology making ... while fitting the square stock into the chuck of a power drill and forcing it through while spinning gives a better finish on softer woods.