From DT Online
Screw Pockets are holes drilled at an angle to the work surface to Counterbore the screw head as shown.
Features and Uses
They can be used where it is not possible to screw directly through one part of the joint to the other (e.g. need to conceal screw heads or lack of access). There is also a branch of screw-together woodworking known as Pocket Hole Joinery which, as the name implies, makes extensive use of Screw Pockets.
Various Drilling Jigs are commercially available to ease the drilling of such shallow angled holes but they can easily be made by pre-drilling a scrap piece of suitable Hardwood to the required angle (usually 15°) and using this to guide the drill.
Alternatively, simply start to drill the hole vertically then, to complete the hole, locate the drill point in the part-drilled hole and lean back the drill to the required angle. Yet another method is to clamp a piece of scrap wood across the work-piece and drill down into the corner created.
|Silverline 868549 Pocket Hole Jig, 6, 8 and 10 mm||Kreg 185823 Kreg Jig R3|