Addition (AQA GCSE Design and Technology): Flashcards
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14 cards from this deck
3 main categories of timber joints
3 main categories of timber joints
Carcase, frame, and edge joints
Purpose of carcase joints
Purpose of carcase joints
Constructing box structures (cabinets, drawers, shelving)
Weakness of butt joints
Weakness of butt joints
Minimal surface area, relies entirely on adhesive
How dowelled joints increase strength
How dowelled joints increase strength
Wooden pegs provide extra adhesive area & mechanical connection
Key feature of finger joints
Key feature of finger joints
Interlocking design dramatically increases adhesive surface area
Why dovetail joints are exceptionally strong
Why dovetail joints are exceptionally strong
Wedge-shaped design becomes stronger under tension
What is a housing joint?
What is a housing joint?
Groove cut to receive timber end, larger adhesive area
Purpose of frame joints
Purpose of frame joints
Creating structural frameworks for furniture (tables, chairs)
Status of mortise & tenon in frame construction
Status of mortise & tenon in frame construction
Gold standard - exceptional strength, large adhesive area
How halving joints are made
How halving joints are made
Cut halfway through each piece so they interlock at crossing
Main characteristic of mitre joints
Main characteristic of mitre joints
Attractive appearance but weak, needs reinforcement
Purpose of edge joints
Purpose of edge joints
Create wider boards by joining narrower planks along length
Tongue & groove joint design
Tongue & groove joint design
Protruding tongue fits into groove, increases adhesive area
Key principle of timber joint strength
Key principle of timber joint strength
Strength depends on adhesive surface area available for glue