ProDesktop - 5

Today was the due date for the assessment and luckily, I finished my vase and stand at morningtea and Mr Ward gave us time to print them off!!!! so I have enough time to hand them in. :) I wante to make a flower to put inside of the vase but I found hard to creat the flower when I looked at Alina's rose, it seemed to be beautiful and bit ease but it actually wasn't so I gave up with it... it wasn't compulsory so.,... tehehe now i'm working on my key tag!!! and so excited about producing my key tag by CAD program!!!! and now I really don't feel bad or depressed anymore :) becuase now I finished my DF, and japanese test but still there are english, history and camp :( but it makes me feel more comfortable and easy:) Well, we still have DF test on Thursday... anyway!!! now I will be concentrating on my key tag =)
 

ProDesktop - 4

I've finished my vase and almost done the stand but the problem is that I forgot to borrow a lap top during the weekend!!!! arggggghghhhh so I hope we have time to finish on our design at lesson on Monday and i will work on 500 word response. This term's assignment was bit difficult than other term. because I ain't a computer person and I can't decide on one particular design. The other thing that depressing me is because Alina's soooo good!!!! her variety of creation and design always tempt me to copy her... and mine seems to be terrible T.T compare to her's. I assume this task requires to take less than 5 hour to finish both vase and stand but I use all my time to spend on accuracy and design!!! if I can time slip back to i get this task, it would take me about an hour to do this task!!!! I don't have laptop or ProDesktop to do this, so I have to wait till tomorrow and hope I get some time for assemble and printing hopelly. and to finish up my stand.... on last lesson Mr Ward showed us how CAD machine works and it was amazed me. Honestly, I wasn't quite convinced that the machine can produce something itself just by ordering it on computer. And it did work with a great accuracy and delicate!!! that machine maybe the machine is more obedient than I do...!!! tehehe. And Mr Ward told me he will do mine first!!! I felt very pleased on the day but now i'm feeling quite guilty and sorry because I do have design for my name tag but I haven't even started and I didn't even completed my assignment... I'm not very good student :'( so than I will need much time to design my name tag whilst other girls are waiting and excited to making theirs :( Anyway I truly thank you for Mr Ward even if he was just saying. thank you for your offer Mr Ward:)!!!!

ProDesktop - 3

I decided my vase design and started to design it!! but I took hours of time to make my stand but now i don't like it... So I decide to start my stand again :(

T3 ProDesktop - 2

During this process, i found hard to undo on the program because when I did something wrong twice, I can only undo the first one. I had to start again when I did make a mistake twice. Secondarly, I can't find out the mistake by myself. when I ask to do something in order, sometimes it doesn't work properly. The ProDesktop is a brilliant program but I can't go back. Maybe I could if I learn more about it but those are the only difficulties I found on this system until today. Also I found hard to memorise the process of assemble in two objects.

T3 ProDesktop-1

This reflection is my first in this term. Until today I didn't realised that I had to write reflection for every lesson i've done for df classes. from now we learnt about conducting 2D shapes such as rectangle, oval, circle and even the square with equal dimensions. Futhermore, in second or third lesson we were able to conduct even a 3D shape of  rectangular cubes, pyramids and sylinder etc. From recent lesson we learnt processs of designing name tag, water bottle and pagers followed instruction occasionally from Mr Ward and also from textbook. On this week's first lesson from my memory, we've done the wheel designing. Now we are given tasks to do with the techniques we have learnt about thisprogram. Briefly, we need to design vase and stand. In addition, we have to do written work as well for this assessment. I atttenpted to making vases last lesson but I can't make out with good design. My plan for now is to plan for a design first stop, before I produce it on to ProDesktop. The assessment also require to draw the platform of the material.

All techniques we learnt was all fairy interesting. There are the lists of some techniques we've learn:

revolve: this technique is recently use to create a water bottle and vase
extrude: the technique is constantly  use for decoration or to manufacture a 3D shapes
project profile: the technique frequently use to grave letters on the face of the shape or to bore through the material
dimension: to put the dimenstions into the numbers you want

etc

Yr 10 project "design a resort"

Yr 10 project "design a resort" -Sustainability (key concept) -Ideas for design -Ideas for sistainability E.g alternate power sources E.g recycling Research 1. Find 3 eco- friendly building material soitable for building your resort 2. Find 3 mathods of re-cycling rubbish 3. Non-traditional methods of sanitation.

desk tidy assessment

1. Choose 2 machines that you used in the fabrication of your desk tidy. With these machines in mind, outline WPH&S (work, place, health & safety) 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).

BAND SAW

SAFETY OPERATING PROCEDURE: Band saw

* DO NOT use this machine unless a teacher has instructed you in its safe use and operation and has given permission.

Safety glasses mush be worn at all times in work areas.

Sturdy footwear must be worn at all times in work areas.

Rings and jewellery mush not be worm.

Long and loose hair must be contained.

Close fitting/protective clothing must be worn.

Hearing protection may be required for some operations.

PRE - OPERATIONAL SAFETY CHECKS

1. Ensure no slip/trip hazards are present in work spaces and walkways.
2. Locate and ensure you are familiar with the operation of the ON/OFF starter and E-Stop (if fitted).
3. Check that all guards are in position.
4. Ensure push stick is available.
5. Lower the blade guide and guard to full effect.
6. Start the dust extraction unit before using the saw.
7. Faulty equipment must not be used. Immediately report suspect machinery.


OPERATIONAL SAFETY CHECKS

*Keep fingers off the line of the cut at all times

1. Never leave the machinge rinning unattended.

2. The workpieve should be fed forward evenly and held firmly on the table to ensure effective control during cutting whilst keeping hads in a safe position

3. Use a push stick when feeding material past the blade.
4. Do not force a wide blade on a cut of small radius. Use relief cuts when cutting sharp curves.
5. Before making adjustments switch off the saw and bring the machine to a complete standstill.
6. Stop the machine before attempting to back the work away from the blade.

HOUSEKEEPING

1. Switch off the saw and rest all guards to fully closed position

2. Leave the maching in a safe, clean and tidy state

FORBIDDEN
Attempting to cut very small items
cutting cylindrical or irregular stock

 Disc sander:

The Disk Sander is used to smooth materials such as woods and plastics. It is also used to remove small amounts of waste material. It is a dangerous machine if safety is ignored.


Goggles must be worn at all times. Hands and fingers must be kept as far away from the rotating disk as possible. A guard, making it impossible to use the wrong portion of the rotating disk must be in permanent position. If the right hand side of the disk were to be used the material would be quickly lifted upwards. This would be very dangerous. A Dust extraction unit should be connected to this type of machine. This is very important as it will extract dust particles produced when the machine is in use. The disk rotates in an anti-clockwise direction which means only the left portion of the disk should be used. The rotation of the disk holds the work down on the table. Lose clothing must be held back by an apron. Long hair must be tied back for personal safety. The machine operator carefully using the disk sander. The material is carefully and lightly pushed against the rotating disk and at the same time moved from left to right. Only the exposed part of the disk can be used because of the position of the guard.

                               # Bend saw                                          # Sander

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.

 POLYTHENE AND POLY STYRENE

Monomers can join together to form polymers. Addition polymers are formed from alkenes. For example:

• ethene can polymerise to form polyethene, which is also called polythene
• styrene can polymerise to form polystyrene

Ethene makes polyethene

• a typical use of polythene is for a plastic shopping bag or plastic bottle
• a typical use of polystyrene is for insulation and protective packaging

 Nylon

Nylon is a synthetic fabric made from petroleum products. It was developed in 1930s as alternative to silk, although it quickly became unavailable to civilian consumers. Nylon, like many synthetics, was developed by Wallace Carothers at the Dupont Chemical Company, which continues to manufacture it today. Nylon is valued for its light weight incredible tensile strength, durability, and resistance to damage. It also takes dye easily, making nylon fabrics available in a wide array of colors for consumers.

Nylon is very sensitive to heat and should be washed and dried on cool settings. Nylon can also be hung dry, and it is favored by campers because it dries very rapidly. Nylon is a flexible textile, and as a result, it appears in a wide range of applications, from clothing to climbing equipment. Depending on how it is processed, nylon can be formed into the gossamer like threads used in stockings or into think toothbrush bristles.

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.

Compression moulding is the process by which thermosetting polymers are usually formed (Figure 3).

The compression moulding process involves placing the polymer ‘dough’ into the die cavity. This ‘dough’ is carefully measured to avoid waste and minimise the amount of ‘flashing’ (fine, thin webs attached to the moulding) around the finished article.

Figure 3a. With the dies apart, the prepared polymer ‘dough’ is placed into the cavity.
Figure 3b. With the die closed, the article is formed and the small amount of flashing on each side will be removed later.

When the die is closed, heat and pressure is maintained until the condensation polymerisation process is completed.

The hot compression moulding process is used to form components from phenolic, urea and melamine thermosetting polymers, as well as alkyd resins.

Transfer moulding is different to compression moulding because the plastic is not fed directly into the die cavity. Instead it is fed into a chamber outside the die. Here it is preheated before a piston forces it through a system of runners and gates that allow it into the die cavity. When the polymer is cured through heat and pressure it is ejected from the mould. The advantage of this process is that the runner system allows the simultaneous production of many small, intricate parts and there is no ‘flashing’ around the finished article.

Rotational moulding is a unique process for manufacturing thermosoftening polymers as it produces hollow items eg. Lawnmower grass-catchers, balls and some types of children’s toys. A split mould is filled with exactly the right quantity of polymer which is then tumbled in the mould once it is bolted together. The die is rotated in a heated chamber until the polymer is completely melted. The die is removed from the chamber and continues to rotate until the polymer is set. The die halves are separated and the article removed.

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.

1) Red

Lenght: (280 x 2) + (120 x 2) + 200 +1.5

Width: 80 mm

= 560 + 240 + 200 + 1.5 x 80

= 901 x 80

= 72080 mm2 (7208cm2)

2) White

leght: 200 mm

width: 60 mm

200 x 60 = 1200
1200- (3.14 x 1.9 = 5.966)
= 1194.034 mm2 (119.4034 cm2)

3) Black

2(200 x 80) + (170 x 80) + 2(60 x 80) + (200 x 60)

= 32000 + 13600 + 9600 + 12000

= 67200 mm2 (6720 cm2)

4) Clear

80 x 200

= 16000 mm2 (1600 cm2)

TOTAL: 72080 + 1200 + 6720 + 1600

= 81600mm2 ( 8160 cm2 / 81.60 m2)