ASSIGNMENT- desk tidy QUESTION 4

1. Choose 2 machines that you used in the fabrication of your desk tidy. With these machines in mind, outline WPH&S considerations that must be adhered to when using these machines. Include photographs of your chosen machines (OnGuard may be an excellent resource for this question).
2. The material you are using for your desk tidy is called Polymethylmethacrylate (ACRYLIC). It has specific properties and uses.  Choose 2 other common polymers and in table form give their industrial name, common name, properties and uses
3. Extrusion, injection moulding, compression moulding, vacuum forming and laminating are examples of common manufacturing processes used with polymers (Plastics). Choose one process and with the use of diagrams and bullet points outline the process.
4. Extension Work - Using processes acquired from your maths lessons, calculate the amount of acrylic sheet that your FINAL desk tidy represents. Show all calculations; answer needs to be in square metres.

Q4.

To work out the amount of acrylic i used for my shelf i need to find the are of acrylic cutting. So I need to measure everything:




Area = length x width

a)
=300+300+100
L= 800mm
W= 100mm
800mm----80cm
100mm----10cm
A= 80x10
  = 800cm2

b) 
L=200mm
W=100mm
200mm---20cm
100mm----10cm
A=20x10
   =200cm2
because there is 3 of these acrylic pieces you have to x it by 3...
   =200x3
   =600cm2

c)
L=200mm
W=88mm
200mm----20cm
88mm---8.8cm
A=20x8.8
  =176cm2

d)
L=100mm
W= 40mm
100mm----10cm
40mm----cm
A= 10cmx4cm
   =40cm
because there is 3 of these acrylic pieces you have to x it by 3...
   =40x3
   =120cm2

e)
L=175mm
W=80mm
175mm----17.5cm
80mm----8cm
 A=17.5x8
    = 140cm2

f)
L=300mm
W=200mm
300mm-----30cm
200mm---20cm 
A=30cmx20cm
   = 600cm2


 Now that i have worked out each acrylic piece I have to add it all together and convert it into meters squared.


There are 10,000cm2 in one m2 so:


800cm2+600cm2+176cm2+ 120cm2+140cm2+600cm2
= 2436cm2
 
10,000
_______


 2436


= 4.11m2


 




 




 

ASSIGNMENT- desk tidy QUESTION 3

1. Choose 2 machines that you used in the fabrication of your desk tidy. With these machines in mind, outline WPH&S considerations that must be adhered to when using these machines. Include photographs of your chosen machines (OnGuard may be an excellent resource for this question).
2. The material you are using for your desk tidy is called Polymethylmethacrylate (ACRYLIC). It has specific properties and uses.  Choose 2 other common polymers and in table form give their industrial name, common name, properties and uses
3. Extrusion, injection moulding, compression moulding, vacuum forming and laminating are examples of common manufacturing processes used with polymers (Plastics). Choose one process and with the use of diagrams and bullet points outline the process.
4. Extension Work - Using processes acquired from your maths lessons, calculate the amount of acrylic sheet that your FINAL desk tidy represents. Show all calculations; answer needs to be in square metres.

Q3.

COMPRESSION MOULDING

Moulding through the force of compression is very important in the industrial world. the materials used are melamine formaldehyde, phenol and urea. When heat and pressure are applied to these materials it moulds into a shape using a mould.

The stages of compression moulding is...

1. The mould is heated.
2. A 'slug' or piece of the selected plastic is placed into the mould and warms up.
3. The hydraulic press begins to move down when the plastic has reached the correct temperature..
4. As the upper and lower mould meet, the plastic is compressed into the shape of the mould.
5. The upper mould moves upwards and the plastic piece (in this case a tray) is removed.

ASSIGNMENT- desk tidy QUESTION 2

1. Choose 2 machines that you used in the fabrication of your desk tidy. With these machines in mind, outline WPH&S considerations that must be adhered to when using these machines. Include photographs of your chosen machines (OnGuard may be an excellent resource for this question).
2. The material you are using for your desk tidy is called Polymethylmethacrylate (ACRYLIC). It has specific properties and uses.  Choose 2 other common polymers and in table form give their industrial name, common name, properties and uses
3. Extrusion, injection moulding, compression moulding, vacuum forming and laminating are examples of common manufacturing processes used with polymers (Plastics). Choose one process and with the use of diagrams and bullet points outline the process.
4. Extension Work - Using processes acquired from your maths lessons, calculate the amount of acrylic sheet that your FINAL desk tidy represents. Show all calculations; answer needs to be in square metres.

Q2.
TYPES OF POLYMERS

INDUSTRIAL NAME	COMMON NAME	PROPERTIES AND USES
POLYSTYRENE	THERMOCOAL	AN INEXPENSIVE HARD PLASTIC USED FOR HOUSE HOLD APPLICATIONS SUCH AS HAIR DRYERS AND TOYS. AND PACKAGING ANS INSULATION.
POLYMETHYLMETHACRYLATE	ACRYLIC	CAN BE MAUFACTURED FOR RACKS, TANKS AND TRAYS AND 10 MM THICK ACRYLIC CAN BE USED FOR BETTA RADIATION PROTECTION. IT IS A HARD POLYMER.
POLYETHELYNE	PLASTIC	SHAMPOO BOTTLES, CUPS CHILDREN TOYS ETC.POLYETHELENE IS A THERMOPLASATIC.

ASSIGNMENT- desk tidy QUESTION 1

1. Choose 2 machines that you used in the fabrication of your desk tidy. With these machines in mind, outline WPH&S considerations that must be adhered to when using these machines. Include photographs of your chosen machines (OnGuard may be an excellent resource for this question).
2. The material you are using for your desk tidy is called Polymethylmethacrylate (ACRYLIC). It has specific properties and uses.  Choose 2 other common polymers and in table form give their industrial name, common name, properties and uses
3. Extrusion, injection moulding, compression moulding, vacuum forming and laminating are examples of common manufacturing processes used with polymers (Plastics). Choose one process and with the use of diagrams and bullet points outline the process.
4. Extension Work - Using processes acquired from your maths lessons, calculate the amount of acrylic sheet that your FINAL desk tidy represents. Show all calculations; answer needs to be in square metres.

ANSWERS

Q1.

DISK AND BELT SANDER-WPH&S:

SAFETY GEAR

• glasses(eye protection)
• mask(optional- to reduce breathing in dust)
• apron 

HAZARDS/RULES

• hand and shirt sleeves (clothes) can get caught in the sander
• your hair being caught (keep your hair tied up and don't lean to close the sander)
• your skin coming in contact with the sand paper
• flying debris or dust can come in contact with you skin or if you are not wearing glasses, your eyes.

BAND SAW

SAFETY GEAR

• glasses (eye protection)
• apron

HAZARDS/RULES

• when cutting an object always keep your attention on what you are cutting
• make sure straight after you are finished using the saw to turn it off.
• stand with two feet apart (make sure you are balanced)
• Keep your fingers away from the blade or you will cut your self
• dont put your face close to the blade

Df Reflection 14

FINALLY FINISHED, today in df i finished my desk tidy. This lesson i glued the door to the hinges and glued the hinges to the shelf. I used hot glue gun, just incase i wanted to take the door off, it would be a lot easier instead of the acrylic glue. Next lesson i might decorate it or work on my assignment. I will also be taking photos of the finished piece and uploading it to my blog.

Df Reflection -13

Today in class i practically finished my desk tidy. I glued the spray painted metal pipes onto the shelve and i used metho to clean up the whole thing before gluing a phone holder right next to the pencil holders. During this lesson i had a really good idea. This idea was to make  little door on the top shelve and drill a hole in it so i can put my finger through it and open it easy. To do this, next lesson i am going to use two gold hinges and glue the hinges to the door and glue the other side of the hinge to the main shelf.