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CLASSROOM
RULES

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EMOTION
E- Everyone deserves respect, both students
and teachers
M- ake sure you have everything you need
before entering
O- Overcome your challenge and fear

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T- Try new things
I- Interact with others appropriately
O- Open your mind
N- Never give up

4. ACTIVITY: LET'S DO THIS
Directions: Find the words related in machining
horizontally and vertically. You have 5 minutes to
finish the task.
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5. Objectives of the lesson:
 Identify lay out tools
 follow safety standards in lay out
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LAY OUT TOOLS

7. What is lay out?
Laying out is the planning of the work on the surface of
the material that is to be made into the finished part. It is
the scribing of lines which indicates cuts to be made, the
centerline of holes to be drilled, and other details that
guide the worker in completing the job
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8. LAY OUT TOOLS
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Scriber

9. Scriber- is a hand tool used in metalworking to
mark lines on work pieces, prior to machining. The
process of using a scriber is called scribing and is
just part of the process of marking out. They are a
rod with a tip made of cast steel that has been
hardened and tempered
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CENTER PUNCH

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Drift

13. Drift- a drift "punch" is misleadingly named; it is not
used as a punch in the traditional sense of the term.
A drift punch, or drift pin, or lineup punch, is used as
an aid in aligning bolt or rivet holes prior to inserting
fasterner
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14. Nail or Pin Punch
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15. Nail or Pin Punch- a nail punch also called a nail set,
is used to drive the head of a nail flush with or below a
surface. A pin punch is a similar tool used to drive pins
for affixing a fixture to a rotating shaft. Nail and pain
punches have a body by which the punch is held, with a
flat ended cyclindrical section whose diameter suits the
object to be drive into the wood.
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16. Stamps
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17. Stamps- also known as letter stamps or number
stamps . These are used to emboss the impression of
a letter or number into a work piece. They are most
common in the reverse image, this allows the end
result to be immediately readable, however they may
be made as a positive image. This is essential in the
case of die or mold making and ensures that the
finished product will be readable.
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Surface Plate- is a solid, flat plate used as
the main horizontal reference plane for
precision inspection, marking out (layout)
and tooling setup. The surface plate is
often used as the baseline for all
measurements to the work piece, therefore
one primary surface is finished extremely
flat

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V-BLOCK

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V- BLOCK- typically used to hold round metal rods
or pipes for performing drilling or milling operations.
They consist of a reactangular steel or cast iron
block with a 90-degree channel rotated 45-degrees
from the sides, forming a V-shaped channel in the
top. They often come with screw clamps to hold the
work.

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PRICK PUNCH

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Prick punch- is similar to a center punch, but it
is used to mark out areas. It has a more acutely
angled tip, resulting in a narrower and deeper
indention

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 Report problems with machine safeguards to
your supervisor immediately.
 Never leave machines unattended with parts
still moving. Remember that parts may still be
moving after the machine has been turned off.

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Questions:
1. What is the importance of safety standards in
laying out tools machine?
2. What is the difference between sciber and center
punch

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3. What do you think will happen if you
will not follow the rules in machining?

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BRAINSTORMING
1. What is the significance of lay out?
2. How would you apply the rules of safety
standards in machining?

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EXIT SLIPS
On a 1/4 sheet of paper write "What Have
you Learned from our Lesson today"

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SHORT QUIZ
1. Used to lay out lines at a set height from the
base, its second name is "surface height gauge or
surface gauge".
2. A round metal rods or pipes used for performing
drilling or milling operations.

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3. The plan of the work on the surface of the material
that is mase into the finished part.
4. A hand tool usee in metalworking to mark lined on
work pieces prior to machining.
5. Usually used to mark the centre of a hole when
drilling holes.