Transcript bandsawsafety

Technology Education
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Shop and lab safety
– Band Saw
– Scroll Saw
– Drill Press
– Sanders
General Safety
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Long hair and sweatshirt strings should
always be tied back and out of the way of
all machines.
Horseplay in the shop will NOT be tolerated,
and will lead to immediate consequences.
Only one person is allowed on a machine at
a time
Safety glasses MUST be worn when you are
working in the shop.
Adhesives, and finishes
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Always wear safety glasses
when using any adhesives or
finishing materials.
When necessary use dust
masks when dealing with
chemicals.
Make sure to wash hands
thoroughly when working with
finishing materials
Cutting and fastening
Tools
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The following hand tools will be used
during this class:
Hammers
Screwdrivers
Box cutters
– Always cut away from yourself
– Be aware of your surroundings
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Hand Drills
Band Saw
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Vertical band saws
– Flat stock to be cut
– Some have blade welders and grinders
attached
– Feeds and speeds
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Horizontal band saws
– Used to cut round stock
– Automatic feed rate based on hardness of
metal
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Keep all safety
guards and guides
must always stay in
place.
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Adjust the blade
guards to within
1/4” to 1/8” of the
stock.
Guards blade from
your fingers
Guides blade along
the track
Blade guards and guides
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Blade guards that
are over 1/4 inch
above the work will
lead to accidents
and reduces the
accuracy of your
cut.
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The material
being cut must
always remain
flat against the
table of the
band saw.
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Don’t cut round stock
on the band saw.
The round stock may
roll into the blade
causing an accident.
Only the instructor
should perform this
task while using a
miter gauge.
Always be aware of your
surroundings
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Do not interrupt others
while using power
equipment.
Stay focused until the
blade has stopped
moving.
Make sure that there is
no body within a two foot
radius of you at any time.
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Never back out of a
cut until the
machine has been
turned off and you
are sure that the
blade has stopped
moving.
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If stock is smaller
than four inches it
is safe practice to
use a push stick
while feeding the
stock through the
blade.
Two Inch Rule
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Always keep hands
and fingers at least
two inches away
from all blades.
Scroll Saw
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The scroll saw is
used to make inside
cuts for a tight
radius.
There are four basic
parts of the scroll
saw
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Safety guard
On/off Switch
Blade
Workpiece table
Scroll Saw continued
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Remember the two
inch rule when
working with the
scroll saw.
ALWAYS keep the
work piece flat on
the table.
ALWAYS wear
safety glasses on
the scroll saw
Scroll Saw continued
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The blades of the scroll saw should always
point downward.
Scroll saws are used for intricate designs
and should not be used for rough cutting.
Never change a blade. Always ask your
instructor to perform any maintenance on
the machine.
The guard should always be 1/8”-1/4” from
the top of the stock.
Drill Press
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Spindle
Chuck
Table
Handle
Drill Press
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General Procedures
Eye protection meeting current ANSI safety
standards must be worn at all times while anyone is
working in the lab.
Never make any adjustments to a machine while it
is running.
Never walk away while a machine is still in motion.
Wait for the machine to come to a complete stop.
Always take the chuck key out of the chuck before
the machine is turned on.
Drill Press Continued
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Disconnect electrical power when
changing blades, bits, etc. or anytime
an injury could occur if the machine is
accidentally turned on. Generally this
requires that the machine be
unplugged or the circuit breaker
turned to the off position.
Drill Press Continued
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Drill Press Fundamentals:
Tie back your hair if it falls forward
when you tilt your head downward.
The larger the diameter of the bit, the
slower the drill press should run.
Always use the slowest speed with
Foerstner bits.
Drill Press Continued
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The thinner the material, the more
likely it is that the bit will grab it.
Sheetmetal must be clamped to the
drill press table unless you can grasp it
in your hand at least 12" from the bit.
Support the underside of the stock to
be drilled. Never drill into the drill
press table
Sanders
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There are three different types of
sanders that we will be using.
– Belt sander
– Disc sander
– Spindle sander
Vertical belt sander
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The sander rotates
in a downward
motion.
It is similar to the
actions of a
conveyor belt.
This machine is
used for outside
curves an rough
sanding
Disc Sander
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This machine
rotates in a circular
motion.
The surface used to
sand is in the shape
of a disc.
The sander always
rotates in the same
direction.
Spindle Sander
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There is a spindle in
the middle of the
machine in which the
sand paper is placed
on.
As the sander rotates it
also moves up and
down.
This type of sander is
used for smoothing out
inside curves.
Sander safety
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Always wear safety glasses when
working on the sanders.
Keep fingers at least 2 inches away
from any sanding surface.
When using the disc sander always
sand on the side in which the disc is
traveling downward.
Summary
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Follow the safety rules.
Use laboratory tools only for their
intended purpose.
Follow the directions and safety
guidelines as listed by the machine’s
manufacturer.
Always follow all safety rules posted
on the wall by the machine
Review
Round stock is always cut on the vertical
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The guide on a vertical band saw should
be adjusted 1 inch above the work
piece.
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Before turning on the band saw you
should stand to the right of the machine
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Some band saws come with an option of
a blade welder and grinder on the
band saw
While cutting on the band saw it is safe
practice to cut with your hands in front
of the blade.
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Scroll saws are used for rough cuts only.
The guard on a scroll saw must be a
minimum of 1” from the top of the
work piece.
When using the drill press, it is not
necessary to remove the chuck key from
the chuck.
The spindle sander is used to sand
outside curves.
Never use the power sanders to sand
very small pieces of material.