Table of Content
General precautions and safety measures
- The general safety precautions to be observed in a carpentry shop are as follows.
- Safety practice-first aid
- Electric shock
- Effects of an electric shock
- Electrical burns
- Burns and scalds
- Severe bleeding
- Immediate action
- To control severe bleeding
- Large wound
- Safety practice – fire extinguishers
- Fuel
- Heat
- Oxygen
- Extinguishing of fire
- Staving
- Smothering
- Cooling
- Extinguishing fires
- Fuel
- Extinguishing
- Type of fire extinguishers
- Water – filled extinguishers
- Foam extinguishers
- Dry powder extinguishers
- Carbon dioxide (CO2)
- Halon extinguishers
Measuring tools
- Steel rule
- The Rule(steel)
- Collapsible Carpenter’s rule (Zig-zag)
- Folding Rule
- Types of Calipers
- Types of joints
- Firm join Calipers
- Spring joint Calipers
- Type of Legs
- Carpenter’s pencil
- Marking gauge
- Construction
- Mortise gauge
- Dividers
- Wing compass
- Marking tools
- Scriber
- Testing tools
- Combination set
Kinds of saws
- Handsaws
- Types of saw
- Straight cutting saw
- Curve cutting saw
- Rip saw (Fig 1)
- Cross cut saw (Fig 2)
- Hand saw (Fig 3)
- Tenon saw (Fig 4)
- Dove tail saw (Fig 5)
- Setting and sharpening of saw
- Topping or jointing of saw teeth (Fig 1)
- Re-shaping(Fig 2)
- Compass saw (Fig 6)
- Setting (Fig 3)
- Planes
- Carpenter’s work bench
- Carpenters’ vice
- There are two types of vice
- Precautions
- The clawhammer
- Pincers
- Screwdriver
- Purpose of saw vice
- Standard screwdriver
- Standard screwdriver
- Heavy duty screwdriver
- Philips screwdriver
- Offset screwdrivers
- Specification
- Precautions
- Holding devices
- Chisels commonly used in carpntry
- Types OF CHISELS
- The Mallet
- Files and Rasps
- Classification of files
- The Brace (Plain & Ratchet)
- Bits
- Oil stone
- Soft oil stones
- Natural oil stones
Plywood
- Manufacturing of ply wood
- Advantages
- USES OF PLYWOOD
- Plywood grade
- Classification of plywood for general purposes
- Hard board
- Thickness of plywood
- Sizes of plywood Board (cm *cm)
- Interior
- Dimension
- Indian Timbers
- Babul
- Mango
- Glue
- Bamboo
- Advantages of timber
- Presevation of timber
- Necessity of preservation
- Presevatives for external wood work
Classifications of timbers
- Endogenous trees
- Exogenous tree
- Based upon module of elasticity
- Grading of structural timber
- Based upon availability
- Durability
- Moderate durability
- Law durability
- Seasoning characteristic
- Moderately refractory
- Non refractory
Growth of tree
- The parts of a tree
- True wood or duramen
- Sap wood
- Cambium layer
- Annular ring
- Bark
- Medullary
Identification of timber
- Colour
- Smell
- Hardness
- Soft to very soft
- Density
- Grain
- Texture
- Lusture
- The punch card system as per
Defects in Timber
- Causes
- Common defects
- Case hardening
- Check
- End check
- Internal check
- Surface check
- Through check
- Collapse
- Bowing
- Cupping
- Spring
- Twisted fibers
- Warp
- Upsets
- Grain
- Cross grain
- Diagonal grain
- Inter lock grain
- Spiral grain
- Wavy grain
- Waney edge
- Rind galls
- Wind cracks
- Knots
- Loose or dead knot
- Live or sound knot
- Shakes
- Heart shake
- Star shake
- Cup shake
- Radial shake
Dieases in timber and Decay of timber
- Dry rot
- Wet rot
- Decay
- Pinhole
- Powder
- Termite
- Prevention of fungal diseases
- Remedies for fungal attacks
- Insect attack
- Beetles
- Prevention of beetal attacks
- Remedy for beetal attacks
- Remedies for termites attacks
- Decay of timber
- Dry rot
- Wet rot
- Decay
- Pinhole borers
- Powder post beetles
- Termite or white ants
- Prevention of fungal diseases
- Remedies for fungal
- Remedy for beetal
- Termites
- Person f termits attack
Conversion of timber
- Live sawing/flat slice cut)
- Back sawing/tangential cut/slash cut.
- Quarter sawing/ radial cut
- Tangential swing
- Disadvantages
- Advantages
- Disadvantage
Seasoning of timber
- Advantages of seasoning
- Methods of seasoning
- Natural seasoning
- Water seasoning:
- Advantages
- Disadvantages:
- Ari-drying:
- Progressive kiln:
- Determination of moisture content:
- Kiln seasoning or kiln drying
- Compartment kiln:s
Apply for Certification
https://www.vskills.in/certification/Vskills-Certified-Junior-Carpenter