Study. Flashcards
1
Q
characteristics of hardwood
A
- broad leaves
- dark coloured
- seeds in pods
- don’t shed leaves
- grow quickly
- non-pored (one type of cell - tracheids)
- structured, uniform
2
Q
characteristics of softwood
A
- narrow leaves
- light wood
- seeds in cones
- shed leaves annually
- grows slowly
- pored woods (2 types of cells (vessels/pores & fibres)
3
Q
types of pine wood
A
- radiata pine
- hoop pine
- cypress pine
- celery top pine, kauri
- huon pine
4
Q
benefits of plywood
A
- cost effective
- more structurally stable, less likely to warp
- lightweight
5
Q
sharpening angle
A
20-25 degrees
6
Q
2 types of veneers
A
- engineered wood veneers
- natural wood veneers
7
Q
live sawing (+ pros and cons)
A
- logs cut into parallel boards
- use large gang saws
+ - simple and economical, little waste and don’t need to be re-cut
- ## suitable for mass production
- timber may war or shrink unevenly
8
Q
back sawing (+ pros and cons)
A
- most used
+ - seasons rapidly
- less prone to splitting when nailing
- wide selection
- shrink more across with width when drying
- more likely to warp or cup
9
Q
quarter sawing (+ pros and cons)
A
+
- less cupping and warp
- good wearing surfaces aesthetically and functionally
-
- more prone to splitting when nailing
- slower seasoning
10
Q
advantages of seasoning timber
A
- reduce moisture content
- prevent wood defects such as warping, cracking or twisting
- resistance to insects and decay
11
Q
ways of seasoning timber
A
- air seasoning
- kiln seasoning
- combined seasoning
12
Q
EMC
A
equilibrium moisture content
13
Q
3 types of dressing wood
A
- DAR - dress all round
- D1S1E - dress 1 side 1 edge
- D2S - dress 2 sides (wide faces)
14
Q
uses of abrasive paper grits
A
- 220 (very fine) - light sanding between stain and sealer
- 150-180(fine) - final sanding or cleaning surface
- 100-120(medium) - moderate removal of surface imperfections
- 60-80(coarse) - heavy removal of wood and coatings
15
Q
natural defects
A
- knots
- burls
- heart rot, brittle heart
- gum veins
- shakes
16
Q
types of shakes
A
- cup shake
- star shake
- heart shake
17
Q
seasoning/handling defects
A
- checks/splits
- compression wood
- collapse
- case hardening
- twist
- warping
- bow
- spring
- cup
18
Q
types of surface decoration
A
- figured timber
- veneering
- inlaying
- marquetry
- wood carving
- parquetry
19
Q
types of inlaying
A
- veneer inserts
- inlay strings
- inlay bandings
