Frankie Shirt 
Berwick St. Tunic 
Parts of a Sewing Machine
@Professor Pincushion
@Jann Newton
@Hailey Stitches
Anatomy of a Sewing Machine:
Understanding the anatomy of your sewing machine is the first step to successful sewing. Knowing the names and functions of these parts helps you thread correctly, troubleshoot issues, and follow tutorials with ease.
Tips for Success:
- Keep your machine’s manual handy! While the basic parts are the same, every brand places their dials and levers in slightly different spots.
- Always turn off your machine before changing the needle or cleaning out the bobbin area.
- Never force any dials or the handwheel. If it feels stuck, something is tangled!
1. Spool Pin & Thread Guides
- The spool pin holds your top spool of thread (it can be horizontal or vertical). The thread guides are small metal hooks or loops that direct the thread precisely across the machine and down toward the needle to maintain proper tension.
2. Tension Discs & Take-Up Lever
- The tension discs squeeze the thread as it passes through, controlling how tightly it is pulled. The take-up lever is the metal arm that bobs up and down; it pulls the thread from the spool and feeds it to the needle for every single stitch.
3. Presser Foot & Feed Dogs
- The presser foot holds your fabric flat against the metal plate. Directly underneath the presser foot are the feed dogs—two jagged metal tracks that grip the bottom of the fabric and pull it evenly backward as you sew.
4. Bobbin & Bobbin Case
- Sewing machines use two threads to form a stitch. The top thread comes from the spool, and the bottom thread comes from the bobbin, a tiny spool hidden under the needle plate. The bobbin case holds it in place and provides the bottom tension.
5. The Handwheel & Stitch Selectors
- The handwheel is the large knob on the right side of the machine. Turning it manually moves the needle up and down. The stitch selectors (dials, sliders, or buttons) allow you to change the stitch type (straight, zigzag), stitch length, and stitch width.
Top FAQs for Sewing Machine Parts:
Which way should I turn the handwheel? +
Always turn the handwheel toward you (counter-clockwise), even if you are just trying to bring the needle up. Turning it backward can tangle the threads in the bobbin case and jam your machine.
Why does my machine keep jamming underneath the fabric? +
A massive bird’s nest of thread on the bottom of your fabric is almost always a problem with the top thread. If the thread slips out of the take-up lever or the tension discs, there is no upper tension, and the machine will pull handfuls of thread into the bobbin area. Rethread your top thread with the presser foot raised!
What does the presser foot lever do? +
The presser foot lever (usually located just behind the needle bar) lowers the foot onto the fabric. Crucially, lifting this lever also opens the tension discs inside the machine, allowing you to pull thread freely. Lowering it clamps the discs shut so you can sew with proper tension.
How often should I clean and oil my sewing machine? +
You should brush out the lint and fluff from the bobbin area and feed dogs after every large project (or a few smaller ones). As for oiling, check your manual! Many modern computerized machines are self-lubricating and should never be oiled at home, while older mechanical machines require a drop of oil regularly.
What are the feed dogs, and can I drop them? +
The feed dogs are the jagged metal tracks underneath the presser foot that grip the fabric and feed it through the machine. On most machines, there is a switch or lever that allows you to “drop” them below the needle plate. This is used for free-motion quilting, darning, or sewing on buttons.
Why is my needle breaking? +
Needles break for a few common reasons: the needle is too thin for heavy fabric (like denim), it wasn’t inserted all the way up into the needle clamp, or you are pulling the fabric from behind as you sew. Always let the feed dogs do the work of pulling the fabric!
