The composite material is expected to be rigid (not flexible).

The electric saw is used to bend the material into a curve.

The grinder is the last step before the assembly and checking dimensions.

Corrosion-resistant is an important property for this new machine part.

Read the text below about selecting materials for a new product and the necessary manufacturing steps. Then, answer the True or False questions.

Materials Choice and Production Plan

Our team is designing a new part for a packaging machine. This part needs to be light to increase machine efficiency, but it must also be very strong and durable. We cannot use heavy Iron or basic зlastic. After some analysis, we decided that a сomposite material, reinforced with fibre, is the best choice. This material is both light and rigid, and it is naturally corrosion-resistant, which is important for long-term quality.

The production of this part involves two main manufacturing processes: cutting and shaping. First, the raw сomposite sheet must be precisely cut to the correct dimensions using an electric saw. Then, the part must be shaped to a specific curve. This requires us to carefully bend the material using a special press. Finally, we use a grinder to make the surface completely smooth. After all these steps, we drill three small holes for the screws needed for assembly. Every part must be checked with a caliper to ensure the dimensions meet the small tolerance required for the machine system.

The team chose Iron because it is lighter than the composite material.

Match the tool or item (1-5) with its main function or purpose

Before using the machine, the worker should check the dimensions of the part using which instrument?

If a worker finds a problem or hazard with the machine, what must they do?

Read the short email about a new machine. Then, answer the three multiple-choice questions below.

To: Maintenance Team From: Ms. Petrova, Supervisor Subject: New Grinder Safety and Operation

Dear Team,

We have a new grinder in the shaping department. This is a powerful tool, so safety is compulsory. Before starting any operation, you must wear all PPE: Safety glasses and ear protection are essential because the machine makes noise and fine metal dust.

When using the grinder, you must check the dimensions of the part first using the caliper to ensure quality. If the surface of the part is rough, you can use the grinder to make it smooth. If you find any problem or hazard with the tool, you must immediately report it to me or fill out an accident report form. Remember to check the electricity with the multimeter before starting maintenance.

What piece of PPE is most important because the grinder makes noise?

You should use the tape measure instead of the micrometer to check the thickness of a piece of paper.