CARPENTRY TOOLS

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CARPENTRY TOOLS

• Classification of
• Carpentry Tools
• Marking and setting out
• Cutting
• Boring
• Planing tools
• Hammers and screw drivers
• Cramping and holding
• Miscellaneous

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CARPENTRY TOOLS Marking and setting out

• Marking lines /points on wood
• Square To set right angles
• Bevel To set angles other than a right angles
• Marking gauge and mortise gauge For marking
  lines parallel to the edges
• Marking point and scribing knifeTo mark points
  and lines on wood

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Cutting tools

• Tool used for cutting wood - Compass saw
• Tools used for cutting timber members are -Coping
  saw, Cross cut saw , Dovetail saw
• Tools used for cutting and shaping joints are
  Tenon Saw, Firmer Chisel, Mortise Chisel, Paring
  Chisel

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Boring

• Used for driving holes in timber members
• Rachet brace-cutting bit is attatched to its
  lower end and the bit is rotataed with the help
  of brace handle
• Centre Bit, Auger Bit, Rose Counter Sunk Bit,
  Screw Drive Bit Used for boring holes of
  different size and shapes
• Brad Awl ,Pointed Awl These have sharpened and
  pointed ends wirth the help of which small and
  fine holes can be made .
• Gimlet It has screwed end with which small holes
  can be bored
• Auger Used for deep boring

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Planing tools

• Used for Planing surface and for cutting small
  mouldings along the edges
• Bead plane
• Jack plane
• Rebate plane

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Hammers and screw drivers

• Used for driving nails and screws and other
  fastenings
• Claw Hammer, Mallet Hammer, Spall Hammer,
  Wallers Hammer.
• Screw Driver, Ratchet Screw Driver

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Miscellaneous

• Cramp For clamping timber ,to cut or make
  groove.
• Nail punch Making small hole before driving nail
  so that timber does not split on surface
• Oil stone Various tools and blades
• Pincers Pliers For taking out damaged nails

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Fastenings

• Timber joints are secured in position with the
  help of following commonly used fastenings
• Wire nails
• Cut nails
• Floor brads
• Lath nails
• Treenail
• Pins
• Screws
• Coach screw
• Bolts
• Spikes

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• Connecters
• Dig
• Dowels
• Sockets
• Straps
• Wedges
• Fasteners

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Fixtures and fastenings

• Hinges
• Bolts
• Handles
• Locks

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Hinges

• back flap hinge
• Butt hinge
• Counter flap hinge
• Garnet hinge
• Nar madi hinge
• Parliamnetry hinge
• Pin hinge
• Rising butt hinge
• Strap hinge
• Spring hinge

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Latch

• Any wood or metal device that is attached to a
  door or window to keep it closed
• The latch consists of plain bar of wood or metal
  which is attached to door or gate and is pivoted
  so that it can be raised by hand above a hook or
  keep attached to door or window frame.
• These simple crude devices serve the purpose of
  keeping the door or window in the closed position

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Handle
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Locks

• A lock is any device of wood or metal which is
  attached to a door or window to keep it closed by
  the operation of a bolt that moves horizontally
  into a striking plate or staple fixed to door or
  window frame
• Most locks are made of steel or brass and combine
  the operation of keeping doors and windows closed
  with a latch bolt operated by handle or lever and
  keeping doors and windows securely shut by the
  operation of a loose key to move a lock bolt

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Rat trap bond

• The rat trap bond (RTB) was first introduced by
  eminent architect Laurie Baker in India and
  supported by HUDCO.
• In the RTB bricks are placed on edge in 16
  cement mortar as shown in the picture.
• With this technique there is reduction in cost
  of the wall by 25 as with conventional English
  bond (9thk wall) 350 bricks are required per
  cu. m whereas in Rat-trap bond only 280 bricks
  are required and also the reduced number of
  joints reduces the mortar consumption.
• No plastering of the outside face is required
  and the wall usually is quite aesthetically
  pleasing and the air gaps created within the wall
  help make the house thermally comfortable.

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Rat trap bond

• In summer the temperature inside the house is
  usually atleast 5 degrees lower that the outside
  ambient temperature and vice versa in winter.
• Thus the main advantages of using Rat trap bond
  are
• Reduction in cost of the wall by 25.
• The reduction in number of joints, reduces
  mortar. 25 less dead weight, 18 savings in
  bricks and 54 savings in cement mortar
• Thermally comfortable Aesthetically pleasing.