Question 1: Explain the difference between a plain seam and a French seam. Include when each might be used in a project.

Answer: A plain seam joins fabrics by sewing the edges together with the raw edges visible on the inside, commonly used for general seams. A French seam encloses the raw edges within a second seam, resulting in a neat finish, often used for delicate or lightweight fabrics.

Question 2: Describe how a zigzag stitch can be used to join fabrics and why it might be preferred over a straight stitch in certain situations.

Answer: A zigzag stitch joins fabrics by sewing in a zigzag pattern, which helps prevent fraying along raw edges and provides some stretch. It is preferred over a straight stitch when sewing stretchy fabrics or reinforcing seams prone to fraying.

Question 3: Identify three different methods of joining fabrics without sewing. For each, briefly explain when it might be appropriate to use each method.

Answer: 1. Adhesive bonding: Using fabric glue or fusible webbing for quick, no-sew repairs or temporary joins. 2. Heat sealing: Using an iron or heat press with fusible tape to bond fabrics, suitable for synthetic or heat-weldable materials. 3. Knotting or tying: Manually tying fabric strands or cords for decorative or functional purposes, such as in macramé or decorative edging.

Question 4: Draw a simple diagram illustrating a basic overcast stitch used for joining two pieces of fabric edge to edge. Label the key parts of the stitch.

Answer: A correct sketch would show two fabric edges aligned parallel, with a series of diagonal stitches over the raw edges, crossing over both fabrics. Label the 'needle', 'stitches', and 'raw edges'.

Question 5: What are the advantages of using a binding tape or bias tape to join fabrics? Provide two reasons.

Answer: Using binding or bias tape covers raw edges, providing a neat finish and preventing fraying. It also adds strength and durability to the seam, especially in areas subject to stress or wear.

Question 6: Explain the purpose of using a hem tape or fusible web when joining fabrics. How does it improve the finish?

Answer: Hem tape or fusible web bonds fabrics together when heat is applied, creating a clean, flat join without sewing. It improves the finish by reducing bulk, providing a smooth appearance, and ensuring a secure bond.

Question 7: Sketch a cross-section of a seam reinforced with double stitching. Describe how this technique enhances the durability of the join.

Answer: A correct sketch shows two lines of parallel stitches running close together on the seam allowance, with the fabric edges enclosed or pressed flat. Double stitching reinforces the seam, making it stronger and more resistant to splitting or fraying under stress.

Question 8: List two advantages and one disadvantage of hand sewing over machine sewing when joining fabrics.

Answer: Advantages: Greater control for small, detailed, or intricate joins; useful for delicate or hard-to-reach areas. Disadvantage: It is often slower and less consistent than machine sewing.

Question 9: Describe a scenario in a textiles project where you would choose to join fabrics with a flat felled seam. Why is this method suitable?

Answer: A flat felled seam is suitable for making durable garments like jeans or sportswear, as it encloses raw edges within the seam, preventing fraying and creating a strong, flat finish for comfort and durability.