¶ Introduction
Instructions for winding bobbins for the Lockstitch machines. These machines can wind a bobbin while they are being used for sewing.
¶ Skills/Class Required
A membership or day pass is required to access Textiles. The following Shop Safety Class is required to access the Lockstitch sewing machines:
¶ Machine Reservations
The lockstitch sewing machines do not require a machine reservation and are available on a first-come first-serve basis.
¶ Before You Begin
Personal Protective Equipment (PPE):
• Sturdy, close-toed shoes must be worn at all times for traction and stability.
• Long hair, jewelry, and loose clothing must be tied back to prevent getting caught in moving parts.
For more information on shop safety visit Textiles under "Safety."
¶ Time to complete
- 5 minutes.
¶ Tools Required
- Bobbin
- Scissors
¶ Materials Required
- Thread
Make sure that the bobbin and thread are compatible with the machine that you are using.
¶ Winding the bobbin
¶ Threading the winding mechanism
- Put an empty bobbin in the winding mechanism, making sure that it is pressed all the way against the machine.
- Put the spool of thread that you want wound onto the bobbin on the spool rack for the machine.
- Taking the end of the thread from the spool, pass it thread back-to-front through the upper hole in the guide post. Then pass it back-to-front throught the lower hole in the guide post.
- Pass it through the loop on the tensioner from back-to-front. Then wrap it underneath the tension discs from right-to-left, making sure that the thread goes between the discs. Then pass it back through the loop, going front-to-back.
- Make sure that the thread gets caught under the little tab in the middle of the machine.
- Wrap the thread underneath the bobbin, then up and over towards your right.
Do not pull thread through any holes in the bobbin.
- Using the thread between the bobbin and the little tab, bring it up, over and leftward, and underneath the bobbin to trap the end of the thread. Do this 5 times to secure it.
- If the end of the thread is sticking out, trim it as close as possible.
- Press the lever down to engage the mechanism.
¶ Getting the bobbin started
The bobbin does not wind as the sewing machine is used to sew.
- Loosen the clutch in the hand wheel.
- Press the drive pedal.
¶ After the bobbin is full
When the bobbin is full, it will automatically stop winding and the lever pops out.
- Cut the thread between the bobbin and the spool.
- Remove bobbin by pulling it towards yourself from the machine.
- Tighten the clutch in the hand wheel before returning to sewing.
¶ Next Steps
¶ References
Instructions adapted from the Juki Manual.
¶ Glossary
- Bobbin: A cylinder or spindle on which thread is wound.
- Bobbin case: Holds the bobbin in place while sewing and applies tension to the bottom thread.
- Needle plate: Sits below the needle and presser plate, covers the bobbin and the bobbin case.
- Shuttle race: The channel or shelf in a sewing machine where the shuttle passes, beneath the warp.