Sewing Machine Mechanisms and Functions

This video tutorial provides a comprehensive guide to the various parts of a sewing machine, including the needle holder, presser foot, feed dogs, stitch length adjustment, spool, bobbin case, balance wheel, pedal, and thread stand. It explains the functions of each component and how they contribute to the sewing process. The tutorial also covers how to properly oil and maintain these parts to ensure smooth operation. Viewers will learn how to adjust stitch length, use the spool and bobbin case, and operate the balance wheel and pedal, whether manually or with a motor.

What is the primary function of the needle holder in a sewing machine?

• To move the fabric forward

• To adjust the stitch length

• To secure the needle and prevent it from falling out

• To hold the fabric in place

Where is the sewing machine foot located?

• Under the balance wheel

• Above the needle

• Below the needle

• Next to the spool

What is the main purpose of the sewing machine foot?

• To move the fabric

• To hold the fabric steady

• To adjust the needle position

• To control the speed of sewing

What does the feed dog mechanism do in a sewing machine?

• Moves the fabric forward

• Controls the speed of the machine

• Holds the needle in place

• Adjusts the tension of the thread

If the fabric is not moving while sewing, what could be the issue?

• The feed dog is malfunctioning

• The pedal is not pressed

• The spool is empty

• The needle is broken

How does the stitch length adjustment lever affect sewing?

• It changes the color of the thread

• It alters the density of the stitches

• It adjusts the needle size

• It controls the machine's power

What happens when the stitch length is set to a higher number?

• The stitches become tighter

• The needle moves slower

• The stitches become more spaced out

• The machine sews faster

What is the function of the spool wheel in a sewing machine?

• To hold the needle

• To adjust the stitch length

• To control the speed of sewing

• To wind the thread onto the bobbin

What is the purpose of the balance wheel?

• To adjust the tension

• To manually control the needle movement

• To hold the fabric

• To wind the bobbin

How is the pedal used in a manual sewing machine?

• It is pressed with one foot to control speed

• It is used to adjust the stitch length

• It holds the fabric in place

• It winds the bobbin