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A box joint is a woodworking joint made by cutting a set of complementary, interlocking profiles in two pieces of wood, which are then joined (usually) at right angles, usually glued. The glued box joint has a high glued surface area resulting in a strong bond, on a similar principle to a finger joint .
Although the holes can be plugged the pocket hole may be considered unsightly when all sides of the joint are visible. It is not suitable for joining thin pieces of wood. The boards must have a minimum thickness of 10 to 15 mm (3 ⁄ 8 to 9 ⁄ 16 in). Pocket-hole joints are substantially weaker than joints which use dowels, or mortises. [8]
An example of a jig is when a key is duplicated; the original is used as a jig so the new key can have the same path as the old one. Since the advent of automation and computer numerical controlled (CNC) machines, jigs are often not required because the tool path is digitally programmed and stored in memory. Jigs may be made for reforming plastics.
Dovetail joint: A form of box joint where the fingers are locked together by diagonal cuts. Dado joint: Also called a housing joint or trench joint, a slot is cut across the grain in one piece for another piece to sit in; shelves on a bookshelf having slots cut into the sides of the shelf, for example. Groove joint
Mortise and tenon joints are strong and stable joints that can be used in many projects. They connect by either gluing or friction-fitting into place. The mortise and tenon joint also gives an attractive look. One drawback to this joint is the difficulty in making it because of the precise measuring and tight cutting required.
The Dowelmax Jig with distance gauge bar. The Dowelmax is a loose tenon dowelling jig manufactured by the O.M.S. Tool company in Canada.The manufacturer claims that the small manufacturing tolerances of 0.026 millimetres (0.0010 in) for the aluminium, brass and steel components of the jig ensure accuracy and repeatability.
The joining technology is used in any type of mechanical joint which is the arrangement formed by two or more elements: typically, two physical parts and a joining element. The mechanical joining systems make possible to form a set of several pieces using the individual parts and the corresponding joining elements.
Because the slots are slightly longer than the biscuits, it is still possible to slide the panels sideways after the joint is assembled (before the glue sets). This fact makes the biscuit joiner easy to use, because it does not require extreme accuracy or jigs to achieve perfect joints. The depth of the cut can be altered by an adjustable stop.
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