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An illustrated Woodwork Joints glossary. The Joints used in general Carpentry and joinery

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Barefaced Tenon
A tenon having only one shoulder. Typically where members with two different thicknesses meet.   Barefaced Tenon page.
Birdsmouth Joint
A joint at the base of an angled member that is designed to stop it sliding.  Birdsmouth Joint page.
Biscuit Joint
Joints in wood and panel products similar to butt joints but made with oval lengths of a composite material (biscuits) in slots cut with purpose made power tool, a biscuit jointer.  Biscuit Joint page.
Bridle Joint
A joint between two members that is in effect the opposite of a mortise and tennon joint.  Bridle Joint page.
Butt Joint
The simplest of all woodworking joints. The jointing surfaces of each member has right angle or square ends and edges.  Butt Joint page.
Butterfly Joint
A loose key joint named for it's shape like a butterfly. Also known as a dovetail key joint. Used mainly in remedial work to stop timber splitting..  Butterfly Joint page.
D
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Double Tenons
Two tenons side by side. Used for jointing wider members.   Double Tenons page.
Dovetail Joint
A type housing or keyed joint where one member has a wedge shaped end set into a similar shaped recess. This page defines:-
Common Dovetail, Lapped Dovetail, Half Lapped Dovetail, Secret Dovetail  Dovetail Joint page.
Dowel Joint
Joints in wood similar to butt joints but made with short lengths of round section timber of various standard sizes (dowels) and corresponding drilled holes.   Dowel Joint page.
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Finger Joint
A factory method of joining random lengths of timber into standard long lengths. Used to produce flooring and mouldings.   Finger Joint page.
Framing Scarf Joints
  Framing Scarf Joints page.
Framing Scarf Joints
End joints for heavy framing members  Framing Scarf Joints page.
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Gunstock Style
A door style that reduces in width, typically wider at the bottom where the door may be paneled and then reducing at the top where it may be glazed   Gunstock Style page.
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Halving Joint
A half lap joint where two pieces are lapped over each other. Can be Corner Lap, "T" lap or Cross Lapped.   Halving Joint page.
Hammer Key Joint
An end joining technique where a hammer shaped tenon is set into a similar shaped recess. Often used in conjunction with wedges to pull the joint tight.  Hammer Key Joint page.
Haunched Tenon
A tenon that does not run through the full width of the member, but it has a cut down section, the Haunch that allows the use of external wedge fixings. Used typically at the corners for doors and windows etc.  Haunched Tenon page.
Housing Joints
Joints that have one member, usually with a plain end set into or housed into another member. Used in joinery and carpentry.
On this page also:- Through Housing, Stopped Housing, Dovetail Housing.  Housing Joints page.
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Loose Tenons
A tenon joining two mortised members.   Loose Tenons page.
Loose Wedged Tenon
A tenon running through a mortise with extra length to allow for a small mortise and a wedge at right angles to secure the joint. Typically in large heavy joints.   Loose Wedged Tenon page.
M
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Mitre Joint
A joint between two members at an angle to each other. Each piece is cut to exactly half of the joining angle. Mostly the angle is 90 degrees so each piece is cut at 46 degrees.
Also on this page:-
End Mitre, Face Mitre, Rebated Mitre, Tongued Mitre, Bastard Mitre   Mitre Joint page.
Mortise and Tenon
A method of joining two members, with a recess, the Mortise in one of the members and a narrowed shouldered piece the Tenon to the other one.  Mortise and Tenon page.
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Notched or Cogged Joints
Heavy carpentry floor and roof framing joints.   Notched or Cogged Joints page.
S
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Scarf Joint
A method of end joining members. From ply the solid timber.   Scarf Joint page.
Scribed Joint
A joint between two mouldings that has one or them cut to the shape of the other. Usually this is done with a coping saw, hence it's alternative name of Coped Joint in North America.  Scribed Joint page.
Slip Feathered Tenon
A wide tenon with loose tongues or slip feathers set into the shoulder to give more strength to a standard mortise and tenon joint.  Slip Feathered Tenon page.
Stub Tenon
A short tenon set into a shallow mortise that does not go the whole way through the the member. Also known as a Blind Tenon.  Stub Tenon page.
Stump Tenon
A tenon with a partly recessed shoulder. Used in heavy framing as an alternative to a double tenon.  Stump Tenon page.
T
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Tongue And Groove Joint
The main joint used to join solid timber floor boards. Also now used for joining many man made products.   Tongue And Groove Joint page.
Tongued Joint
A type of narrow housing joint, using a thin tongue rather than the full thickness of the timber as in a standard housing joint.  Tongued Joint page.
Tusk Tenon
A strong load bearing joint for trimmers in heavy floor framing.  Tusk Tenon page.
Twin Tenon
A tenon joint with two separate tenons, one above the other. Typically used in wide door rails where the rail is too deep for a standard Mortise and tenon joint.   Twin Tenon page.

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Please Note! The information on this site is offered as a guide only!  When we are talking about areas where building regulations or safety regulations could exist,the information here could be wrong for your area.  It could be out of date!  Regulations breed faster than rabbits!
You must check your own local conditions.
Copyright © Bill Bradley 2007-2010. All rights reserved.
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