WOODWORKING JOINERY Joinery What is joinery In our

WOODWORKING: JOINERY

Joinery �What is joinery? • In our case – we will be looking at the fastening or combining of two or more boards together when building our projects. �It is important to have good, strong joints when building furniture. �It is sometimes good to use both advanced joinery methods and fasteners when assembling the project.

Butt Joints � Used to join 2 boards • Edge to edge • End to side • End to edge � Very simple form of joinery

Dado Joints Slot or groove is cut across the width of a board (on the inside) when joining 2 boards together � Boards are joined at right angles to one another � Remove a portion from one board to accept the other board (usually half the thickness of your material) �

Rabbet Joints � Similar to a dado joint � Remove material from the end or edge of a board � Makes the boards connect at a right angle to one another

Spline Joints � � � The spline is the strip of wood used in the center of this joint. The spline is inserted into matching grooves/troughs on two boards. Splines are often used to reinforce miter or butt joints. Spline can also help align the pieces for the glue-up procedure. You can also use a spline joint as a decorative accent in your project.

Mitre Joints � The division, into 2 equal parts, of an overall angle created by 2 intersecting parts • Most frames that use miter joints meet at 90˚ so the two pieces are cut at 45˚ � Precise cuts are very important – you will see gaps and have a less secure joint if your cuts are not accurate

Lap Joints (ie. end-lap, half-lap) � Remove the full width of the intersecting wood pieces. � The two parts meet and together make up the entire thickness. � Should be used with fasteners as well in order to increase the strength of the joint.

Tongue-And-Groove Joints �A short tongue is cut along one edge. � A matching groove is cut along the edge of the other board. � Good to use when making a wider panel from narrow boards.

Box Joints � Cut straight slots and grooves out of the end of two boards in order to form an interlocking system at the corners. � Sometimes referred to as a finger joint. � Used for decorative reasons as well as to strengthen the assembly.

Mortise-and-Tenon Joints � Join two pieces of wood at an angle (usually 90˚) � A tenon (a portion that sticks out) is cut on the end of one board. � A matching recess, slot or hole is cut into the other piece (mortise). � The two fit together to make a strong joint that is frequently used in furniture making.

Dovetail Joints A system of pins and tails that interlock together. � Tails are the triangular shape cut through the thickness of a board. � Pins are more slender portions cut along the grain of the other board. � One of the strongest joints. � Also very attractive for of joinery. �

Dowel Joints � Cylindrical piece of wood used to join two pieces of wood together. � Holes are drilled into both pieces of wood at precise locations. � The dowel (cylindrical piece) fits into the hole on either side. � Makes a butt joint more secure.

Biscuit Joint � Thin football shaped disk is used to join two boards together. � A slot is cut into each board. � The biscuit fits halfway into each side of the slot. � The biscuit expands with the glue to fill the gap.

Fasteners What are the different types of fasteners?

Your task…. � Define the term fastener as it would be used in the woodshop. � Choose 3 -4 specific types of fasteners (ie. Glue, nails, screws, tape, etc. ) and describe its benefits. • For example – Robertson screw, Gorilla Glue, and roofing nails • Why would we use waterproof glue over regular wood glue. • Why do some nails have “twists” along the shank? � Do not write a novel – but make sure you have enough information about each. � If you would prefer to do a Power. Point over a Word document – then do so!