OBSERVATION 1

AIM: To observe how different types of threads react when white cement is used as the solution.

MATERIALS: Sewing cotton thread, Embroidery thread, Thin Crochet thread, Thick crochet thread, Thin, shiny crochet thread, Woolen thread. 

PROCEDURE: 

• Make holes on the sun board.

• Tie the different types of threads to it.

• Make a slurry of  white cement and water.

• Apply it to the threads.

• Hand it upside down to dry.

• After drying, test the rigidity of the different threads.  

After applying white cement & drying

READINGS: The thicker threads i.e. Woolen thread, embroidery thread and thick crochet thread  were more rigid  than the others.

OBSERVATION 2

AIM: To test the rigidity of different types of threads when subjected to glue as a solution.

MATERIALS: Sewing cotton thread, embroidery thread, woolen thread, thick crochet thread, thin crochet thread, thin, shiny crochet thread, jute                                    thread, fevicol, sun board.

PROCEDURE:

• Make holes in the sun board.

• Tie the different types of threads to it.

• Applying fevicol to the threads.

• Hang it upside down to dry.

• After drying, turn it upside to check the amount of rigidity obtained through fevicol.

After applying fevicol & drying

READINGS: The jute, embroidery & the thin, shiny crochet thread were a bit stronger than the others.