Introduction
This manual provides instructions for the Cutex Pack of 25 Metal Bobbins and Storage Case, designed for use with specific Juki industrial sewing machines. Please read these instructions carefully before use to ensure proper operation and longevity of your bobbins and storage case.
Product Overview
The Cutex bobbin set includes 25 high-quality large capacity metal bobbins and a durable plastic storage case with a foam insert. These bobbins are crafted from alloy steel for durability and consistent performance.
Package Contents:
- 25 x Large Capacity Metal Bobbins
- 1 x Plastic Storage Case with Foam Insert
Compatibility:
These bobbins are compatible with the following Juki industrial sewing machine models:
- LH-1182
- LH-3.578
- LU-563
- LU-563-3
- LU-1508
- LU-1508N
- LU-1510
- LU-1510N
- LU-1560
- LU-1560N
- LU-1565
- LUH-521
- LUH-526
Setup
- Unpack Components: Carefully remove the bobbins and storage case from their packaging.
- Inspect Bobbins: Examine each metal bobbin for any visible defects or rough edges that could potentially snag thread.
- Organize in Case: Place the bobbins into the foam insert within the storage case. The foam is designed to hold each bobbin gently and securely in place. The clear lid allows for easy identification of thread colors without opening the case.

Image: The bobbin storage case opened, showing the 25 metal bobbins organized within the foam insert. This view highlights the clear lid and the orderly arrangement of bobbins.
Operating Instructions
Winding Bobbins:
- Insert a metal bobbin onto your sewing machine's bobbin winder spindle. Ensure the bobbin fits securely and does not wobble excessively.
- Follow your specific Juki industrial sewing machine's instructions for threading and winding thread onto the bobbin. The bobbins are designed with holes on both sides for consistent thread take-up.
- Once wound, remove the bobbin from the winder.
Inserting Bobbin into Machine:
Refer to your Juki industrial sewing machine's user manual for precise instructions on inserting the wound bobbin into the bobbin case and then into the machine's shuttle mechanism. Proper insertion is crucial for correct stitch formation.
Storage:
After use, whether wound with thread or empty, store your bobbins in the provided storage case. The foam insert keeps bobbins organized and helps prevent thread from unraveling. Close the hinged lid securely with the latch to protect the bobbins from dust and damage.

Image: The bobbin storage case in a closed position, showcasing its compact design and the clear lid that allows visibility of the bobbins inside.
Maintenance
Bobbins:
- Regularly inspect bobbins for any burrs, nicks, or damage that could snag thread or affect stitch quality. Discard damaged bobbins.
- Clean bobbins periodically with a soft, dry cloth to remove lint, dust, and thread residue. Avoid using harsh chemicals or abrasive materials.
Storage Case:
- Wipe the plastic storage case with a damp cloth as needed to keep it clean. Ensure the case is completely dry before storing bobbins.
- Keep the foam insert free of debris to ensure bobbins sit properly.
Troubleshooting
- Bobbin Not Winding Properly: If a bobbin does not wind correctly or feels loose on the winder spindle, ensure it is seated properly. Some bobbins may have slight manufacturing variations; try a different bobbin if issues persist. Consult your sewing machine's manual for bobbin winding adjustments.
- Thread Snagging or Breakage: Check bobbins for any rough edges or damage that could cause thread to snag. Ensure the bobbin is inserted correctly into the bobbin case and that the thread tension is properly adjusted on your sewing machine.
- Storage Case Latch Issues: If the case latch is stiff or difficult to close, ensure no debris is obstructing it. If the latch is damaged, the case can still be used, but extra care should be taken to keep it closed, perhaps with a rubber band.
Specifications
| Product Name | Cutex Pack of 25 Metal Bobbins with Storage Case |
| Model Number | CTX-BB-25-563W |
| Manufacturer | Cutex |
| Material | Alloy Steel (Bobbins), Plastic (Case) |
| Package Dimensions | 8.27 x 5.83 x 1.38 inches |
| Item Weight | 9.6 ounces (0.27 Kilograms) |
| ASIN | B08CSBYV99 |
| UPC | 850010940571 |
Support
For further assistance, inquiries, or to report any issues regarding your Cutex bobbins and storage case, please contact Cutex customer support. You can typically find contact information on the official Cutex website or through the retailer where the product was purchased.