Version 1

There are different ways of structuring this section, both of which are acceptable.

Version 1

Describes the method of construction of each component followed by an analysis of testing procedures and issues. The section concludes with an overall summary. The example here scored 100%.


Text Comments

Component 2: (Spiral Rank) + photo

Construction Process

The spiral track was constructed from toilet paper rolls cut in half vertically and horizontally, 5cm in length and 4cm in diameter. These were glued together in such a way that their inside edges formed an angle of approximately 140 °. This created the spiral effect in the track which can be seen in the photo in Figure 1. The support stand was made from large cardboard packaging cylinders cut down to 45cm with a band saw. 5cm from the top of the cylinder a press drill with a 4cm drill bit was used to put a hole through facing sides of the cylinder. The top of the track was also glued into place for further stability. The top of the track was closed off with masking tape.

Each of the 8 components is structured clearly and logically like this:

  • Name of component + photo

  • Construction Process

  • Testing and Issues

This ensures that the amount of detail is sufficiently well-covered.

Testing and Issues

With the spiral, as it was made of toilet paper rolls, a flimsy and weak material, bracing and support was quite important. The thickness and weight of the support stand adequately addressed this issue. However, when it came to testing, it became apparent that the walls of the track were not high enough and the centrifugal forces exerted on the marble not great enough to force the marble out of the track before it reached the bottom. To solve this problem a barrier wall along the outside edge of the track was required. A thick cardboard rectangle (20cmx30cm) cut out and scored at intervals of 1.5cm was fitted along the edge of the tracks' lower section, where the problem was occurring. This barrier also provided further bracing and stability of the structure.

Good explanation of testing of this component and how issues and problems were addressed.

Overall (summary)

Connecting all the different components together proved to be the most difficult part and where the majority of problems arose. This was addressed by testing different sequences of components and altering the components themselves so that they fitted together in a more connected manner. The construction and testing was the most difficult yet instructive stage of the project. The final device is a result of trial and error testing and development and thoughtful response to problems encountered.

This provides an appropriate conclusion to the whole section and leads in well to the final section of the report.

[Version 2]