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