Joinery Techniques 302c Flashcards
Three solid wood joint classifications
-Glued
-Wood Fastened
-Interlocking
Describe wood fastened joints
Joint using glue as a well as an additional piece to strengthen joint ie biscuit and spline
Six physical elements that can affect joinery
-Material
-Manufacturing
-Load/Strength
-Environment
-Heat
-Moisture content
Two words that describe the geometry of a joint before and after assembly
Internal and external
The forces on a joint
-Tension
-Compression
-Sheer
-Racking
Describe tension on a joint
Force pulling apart a joint
Describe compression on a joint
Force pushing joint together
Describe sheer on a joint
The slipping of the parts of the joint
Describe racking on a joint
A combination of tension, compression, and sheer force
Factors that could affect your choice of adhesive
-Temperature
-Humidity
-Location (indoor/outdoor)
-Gap filling
-Working time
Four main families of cabinetmaking joints
-Case and Carcase
-Frames
-Leg-rail
-Drawers & trays
Types of case joinery
-Butt joint (potentially reinforced with dowels, screws, biscuits)
-Rabbet
-Dado
What is the “workhorse” joint of large frames, tables, and chairs?
Mortise and tenon
Recommended tenon width?
A third to a half of the the piece
When should you split the tenon?
If it is more than six times wider than the thickness
Three sides of a tenon
-Shoulder
-Face Cheek
-Edge Cheek
Describe a pegged tenon
Tenon has wooden pegs inserted perpendicular to the face of the tenon
Types of tenon
-Blind
-Through
-Pegged
-Wedged
-Foxed
-Bare faced
Describe a termination hole
Hole at the stop of a tenon kerf to prevent splitting when wedged
Difference between mullions and muntins
Mullions are structural and muntins are more for aesthetics, ie separating glass panels
Purpose of a haunched tenon in a door frame?
To cover panel groove
Top horizontal components of tables
Aprons
Top horizontal components of chairs
Rails
Strong and reversible leg-rail connection hardware
-Corner bracket
-Leg brace
Types of drawer and tray joinery
-Dovetail
-French Dovetail
-Finger joint
-Tongued lap joint
-Mitre
-Butt
-Rabbeted
First step in starting on any project
Analyze drawings, make cut list, and prepare solids
Tool used to draw large radii
Beam compass
What order should you mark out your joints?
Most complex to least
Mortise or tenon first? Why?
Mortise, fixed tool sizes
Joints that should not be used in furniture joinery?
As long as good principles of joinery are used, all joints can be used in furniture
Type of layout you should use for a complicated assembly?
Full scale
Difference between layout and markout
Layout is a scale drawing of project, markout is transferring your joint markings on to the solid
Two joints that you can leave the protruding ends long and flush after assembly
Open mortise and tenon and through mortise and tenon
How should you clamp during a dry fit?
Same way you will when gluing
Best practice of removing clamps?
Partially loosen all clamps instead of taking one off completely at a time
Two benefits of a wood fastened joint
Alignment and strength
Factors of selection and performance of joints
-Form
-Function
-F(ph)ysical Elements
-FIt
Ways to strengthen an end-to-end butt joint
Scarf or finger joint.
Strength of a edge-to-edge joint
Strong
Strength of a face-to-face joint
Strong
Strength of an across or side grain joint
Strong if moisture content low and consistent
Strength of a end-to-end joint
Weak AF
Muntin
Mullion
Sloped haunch tenon
Half lap
T lap
Cross lap
Bridle or slip tenon
Mitre key / splined mitre
