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Paint rollers similar to the one shown are used in home decoration - Leaving Cert DCG - Question C-5 - 2021

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Question C-5

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Paint rollers similar to the one shown are used in home decoration. Details of the paint roller are given in Fig. C-5 below. A parts list and a 3D graphic of the r... show full transcript

Worked Solution & Example Answer:Paint rollers similar to the one shown are used in home decoration - Leaving Cert DCG - Question C-5 - 2021

Step 1

Relative positioning of components

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Answer

  1. Identify the main components of the paint roller as per Fig. C-5:

    • Main Body
    • Handle
    • Roller
  2. The main body should be positioned horizontally in the center, with its front face at a distance of 134 mm from the bottom support.

  3. Place the handle vertically at the suitable angle on the right side of the main body.

  4. Ensure the roller aligns correctly on the left side of the main body, accounting for the hinge.

  5. Confirm that all components are proportionate to the provided dimensions.

Step 2

Draw a Section View

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Answer

  1. Start by sketching the outline of the main body in the center, portraying the internal supports as visible edges.

  2. For the handle, illustrate a longitudinal section that shows its connection to the main body.

  3. In the roller, depict its cylindrical shape with a subtle axis line indicating its rotational capabilities.

  4. Accurately represent the sectional view with clear hatching and centrelines, particularly in the areas indicating depth or hollow sections.

Step 3

Roller

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Answer

  1. Create the roller's cylindrical outline, ensuring the diameter is 40 mm, as indicated.

  2. Outline the features of the roller, including its connection points to the main body.

  3. Accurately represent the hole for the handle, located at the center of the roller, with a diameter corresponding to the handle dimensions.

Step 4

Completion

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Answer

  1. Use appropriate line weights and styles to differentiate between various components.

  2. Ensure that all features are clearly detailed, especially the sections and joins.

  3. Add notes for dimensions not explicitly mentioned but can be estimated from the available data.

Step 5

Hatchings and Centre Lines

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Answer

  1. Apply hatching patterns to solid parts (like the main body) to visually differentiate material.

  2. Add centre lines for rotational symmetry, especially around the handle and roller areas.

Step 6

Presentation

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Answer

  1. Ensure the drawing is neat, with all components clearly labeled and dimensioned.

  2. Use a consistent font and size for text to enhance readability.

  3. Create a border around the drawing for a professional finish.

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