Carpentry tools EWS

1. BTM I Ar. Mahua Biswas 1
CARPENTRY TOOLS
 Classification of
Carpentry Tools
1) Marking and setting out
2) Cutting
3) Boring
4) Planing tools
5) Hammers and screw
drivers
6) Cramping and holding
7) Miscellaneous

2. BTM I Ar. Mahua Biswas 2
CARPENTRY TOOLS
Marking and setting out
 Marking lines /points
on wood
1. Square :To set right
angles
2. Bevel :To set angles other
than a right angles
3. Marking gauge and
mortise gauge: For
marking lines parallel to the
edges
4. Marking point and
scribing knife:To mark
points and lines on wood

3. BTM I Ar. Mahua Biswas 3
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

4. BTM I Ar. Mahua Biswas 4
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

5. BTM I Ar. Mahua Biswas 5
Planing tools
 Used for Planing
surface and for
cutting small
mouldings along
the edges
 Bead plane
 Jack plane
 Rebate plane

6. BTM I Ar. Mahua Biswas 6
Hammers and screw drivers
 Used for driving
nails and screws
and other
fastenings
 Claw Hammer,
Mallet Hammer,
Spall Hammer,
Waller’s Hammer.
 Screw Driver,
Ratchet Screw
Driver

7. BTM I Ar. Mahua Biswas 7
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

9. 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
BTM I Ar. Mahua Biswas 9

10.  Connecters
 Dig
 Dowels
 Sockets
 Straps
 Wedges
 Fasteners
BTM I Ar. Mahua Biswas 10

11. Fixtures and fastenings
 Hinges
 Bolts
 Handles
 Locks
BTM I Ar. Mahua Biswas 11

12. 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
BTM I Ar. Mahua Biswas 12

13. BTM I Ar. Mahua Biswas 13

14. 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
BTM I Ar. Mahua Biswas 14

15. Handle
BTM I Ar. Mahua Biswas 15

16. 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
BTM I Ar. Mahua Biswas 16

18. 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 1:6 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 (9’’thk 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.
BTM I Ar. Mahua Biswas 18

19. 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.
BTM I Ar. Mahua Biswas 19