Drill Press Safety

1
Drill Press Safety

• Always wear approved eye protection.
• Select the proper drill bit for the job.
• Run the drill prior to using on material to check
  the bit in the chuck.
• Remove chuck key and place back in it proper
  holder.
• Be sure the drill table hole is directly under
  the bit and use scrap wood.

2
Drill Press Safety

• Secure all work in a clamp or vise when drilling,
  no exceptions.
• If the bit gets stuck in the material, stop the
  press and address the problem.
• Make all adjustment prior to turning the press
  on.
• Clear material when drilling large or deep holes.
• Locate center holes with a punch or awl.

3
Drill Press Safety

• Make all speed adjustments with the motor on and
  consult instructor prior to doing so.
• never use auger bits in the drill press.
• Do not leave the drill press until it has
  stopped.
• Remove and return all bits after use.

4
Disc Spindle Sander Safety

• Always wear approved eye protection.
• Make any adjustments with the power off.
• Make sure the abrasive surface is not torn or
  frayed.
• Keep hand at least two inches from the abrasive
  surface.
• Sand only on the downward side of the disc.

5
Disc Spindle Sander Safety

• Keep material flat on the table when sanding.
• Do not use the shaping machines to remove more
  than 1/8 of material.
• Keep material off of the disc until it has
  started to rotate.
• Do not leave any sander until it has come to a
  complete stop.
• Do not use one location on the abrasive surface.

6
Band and Scroll Saw Safety

• Always wear approved eye protection.
• Check material for foreign objects before
  processing.
• Adjust the guide post 1/4 above the material
  while the machine is off.
• Remove scrap only when the machine has stopped.
• Allow the saw to reach full operation speed
  before using.

7
Band and Scroll Saw Safety

• Feed material slowly, do not force, let the
  machine do the work.
• Never allow anyone to stand to the right of the
  machine. If the blade breaks, injury may occur.
• Ask the instructor before cutting round objects
  such as dowels.
• Use relief cuts when cutting small curves, do not
  allow the blade to twist.

8
Band and Scroll Saw Safety

• If the blade breaks, stand back and inform the
  instructor.
• Do not leave the machine until it has stopped.
• Avoid backing out of cuts, if needed, turn the
  power off.

9
Radial Arm Saw

• Always wear approved eye protection
• Remove any jewelry, loose clothing, and tie back
  long hair
• Make all adjustments with the machine off
• Make sure the saw travels easily on the arm and
  also retracts to the rear of the table after the
  cut is finished

10
Radial Arm Saw

• Adjust the anti-kickback device to 1/8 above the
  material and check before cutting
• Make sure material to be cut is tight against the
  fence before cutting
• Make sure to let the teacher check any
  adjustments to the saw other than the original
  setup

11
Radial Arm Saw

• Keep fingers out of the cut line and at least 3
  away from the table
• Do not cut material shorter than 6 in length or
  wider than the saws capability
• Use a push-stick to support small pieces of
  material
• Get help or use a support with long material stock

12
Radial Arm Saw

• Do not leave the machine until the blade has come
  to a complete stop

13
Plastic Processing Information and Safety

• Eastview High School
• Fabrication Laboratory

14
Introduction to Plastics

• Plastics are an excellent material to prototype
  with
• Plastics can be processed on the drill press,
  disc sander, bandsaw and radial arm saw
• Plastics may be shaped, glued and buffed to a
  clean finish

15
Introduction to Plastics

• The type of plastic that we use most is acrylic
  otherwise know as Plexiglass
• Some of the problems with plastic is that it is
  difficult to work with, scratches VERY easily,
  can crack or break, and attracts dirt or dust

16
Cutting Acrylic Plastic

• Acrylic plastics can also be cut on the table saw
• The hacksaw it the only good hand tool to cut the
  material with
• Another way to cut thin sheet plastic is to score
  the plastic and then crack the plastic

17
Cutting Acrylic Plastic

• Sheet plastic has a protective covering on it
• This protects the plastic while processing is
  being done
• Do not remove this film until processing is
  complete
• You may still work with uncovered scrap, but be
  careful

18
Cutting Acrylic Plastic

• One safety concern when cutting plastic is the
  melting factor
• When the plastic is processed heat is generated
  which in turn melts the plastic
• This residue can be very hot and can burn you
  slightly

19
Cleaning and Finishing an Edge

• When cutting and processing acrylic plastic the
  edges tend to look rough and unfinished
• This may be removed and finished to any degree
  that meets your needs
• The following steps must be followed in order to
  achieve the best finish possible

20
Cleaning and Finishing an Edge

• DO NOT REMOVE THE PROTECTIVE COVERING!
• Scrape all the edges until all of the saw marks
  are removed
• Using fine sandpaper and a block of wood, sand
  the edges until they are smooth and clean

21
Cleaning and Finishing an Edge

• Using the large buffing wheel, buf the edges
  until they are clear
• Use the smaller buffing wheel, buff the edges
  until the clear edge is smooth

22
Buffer Safety Rules

• Always wear safety glasses
• Remove loose clothing and jewelry
• Always buff using the lower half of the wheel
• Always stand to the side when buffing
• Never use a rag to hold the work while you are
  buffing

23
Buffer Safety Rules

• Use extra caution when buffing around corners,
  openings or areas where the wheel could grab
  and throw the material
• Always use two hands
• Watch that the material does not overheat and
  burn your hands

24
Buffer Safety Rules

• Only one person may operate the buffer at a time
  and no one else should be in the safety zone
  while someone is buffing
• DO NOT stop the buffer with your hand

25
Strip Heater Safety Rules

• Always wear safety glasses
• Never leave the strip heater while you are using
  it
• Always assume that the heater is VERY HOT!
• Make sure the plastic never touches the element

26
Strip Heater Safety Rules

• Only use acrylic plastic on the heater
• Heated plastic is extremely hot, use gloves
• Be prepared to bend the plastic BEFORE you start
  heating
• More than one person may work on the strip heater

27
Strip Heater Safety

• Watch for bubbling or sagging which means the
  plastic is overheated
• Test for flexibility while heating
• Do not shape plastic on the table

28
Oven Safety

• Use same safety rules as strip heater
• Always use gloves when handling plastic out of
  the oven
• The oven needs 10 minutes to heat up
• Do not change the settings on the oven

29
Cement Processes and Safety

• Clean all edges that are to be glued
• Pieces must be flush to each other no gaps
• Since the glue can actually melt the plastic,the
  more you put on the worse the bond will be
• Leave the materials together overnight for best
  results

30
Cement Processes and Safety

• Do not get the glue on your skin or clothes
• Wash your hands if you get it on your skin
• Do not poke or fool around with glue guns