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Madeira Magnetic Sided White Bobbin Style "L" 134yd - 144ct

Limited Availability
$46.70
SKU MD-308-509

Professional pre-wound Style L embroidery bobbins featuring continuous white polyester filament, a magnetic side for consistent tension and reduced backlash, 134 yards per bobbin, and 144 bobbins per box.

Characteristics

Madeira Magnetic Sided White Bobbin Style "L" is a professional pre-wound embroidery bobbin designed to provide smooth thread delivery, consistent tension, and dependable performance in compatible commercial embroidery machines.

Each bobbin combines a magnetic side on one side with a paper side on the other, creating a practical bobbin construction designed specifically for reliable machine embroidery production. The magnetic side helps control bobbin movement inside the metal bobbin case, reducing backlash while helping maintain uniform thread tension throughout the life of the bobbin.

Consistent bobbin tension is especially important in commercial embroidery, where variations in lower-thread delivery can affect stitch formation, registration, thread appearance, and overall embroidery quality. Madeira's magnetic-sided design helps provide predictable thread delivery from the beginning of the bobbin through the remaining thread.

Each Style L bobbin is pre-wound with 134 yards of continuous white polyester filament thread. Continuous filament construction produces minimal lint compared with many spun thread constructions, helping reduce lint accumulation inside metal bobbin cases and supporting cleaner embroidery machine operation.

Because the bobbins arrive pre-wound, operators can eliminate the time and inconsistency associated with manually winding bobbins. Each bobbin provides a consistent quantity of thread and is ready to install into a compatible Style L bobbin case.

The combination of controlled magnetic tension and continuous polyester filament makes these bobbins an excellent choice for high-volume commercial embroidery environments where reliable stitching, efficient production, and reduced downtime are important.

Each box contains 144 pre-wound white Style L bobbins, providing a convenient bulk supply for embroidery shops, production departments, contract decorators, and other professional embroidery operations.

Features
  • Professional Madeira machine embroidery bobbins
  • Pre-wound for convenient, production-ready use
  • Style L bobbin configuration
  • Magnetic-sided construction
  • Magnetic side on one side
  • Paper side on opposite side
  • Magnetic side helps prevent bobbin backlash
  • Helps provide uniform bobbin tension
  • Designed for consistent tension throughout the life of the bobbin
  • Helps promote smooth and consistent thread delivery
  • Continuous polyester filament construction
  • Helps reduce lint buildup in metal bobbin cases
  • White bobbin thread
  • 134 yards of thread per bobbin
  • 144 bobbins per box
  • Eliminates the need to manually wind individual bobbins
  • Consistent pre-wound thread quantity
  • Suitable for compatible commercial embroidery machines
  • Excellent for high-volume embroidery production
  • Helps reduce production interruptions associated with inconsistent bobbin winding
  • Convenient bulk box for professional embroidery shops
Specifications
Brand
Madeira
Product
Magnetic Sided Embroidery Bobbin
Madeira Item Number
308-509
Product Type
Pre-Wound Embroidery Bobbin
Bobbin Style
Style L
Construction
Magnetic-Sided / Paper-Sided
Magnetic Side
Yes
Paper Side
Yes
Thread Material
Polyester
Thread Construction
Continuous Filament
Thread Color
White
Thread Length
134 Yards per Bobbin
Quantity
144 Bobbins per Box
Pre-Wound
Yes
Primary Application
Machine Embroidery
Recommended Environment
Commercial / Production Embroidery
Bobbin Case
Compatible Style L Metal Bobbin Cases
Manufacturer
Madeira USA
Usage Tips
  • Confirm that the embroidery machine and bobbin case are compatible with Style L bobbins before installation.
  • Install the bobbin with the correct orientation according to the embroidery machine or bobbin-case manufacturer's instructions.
  • Madeira recommends removing the anti-backlash spring from compatible metal bobbin cases when using magnetic bobbins.
  • Do not operate a magnetic-sided bobbin against an anti-backlash spring unless specifically approved for the bobbin case being used.
  • Check bobbin tension after switching from conventional paper-sided or sideless bobbins to magnetic-sided bobbins.
  • Use a bobbin tension gauge when precise and repeatable lower-thread tension is required.
  • Adjust bobbin tension according to the embroidery machine, upper thread, garment, backing, needle, and design requirements.
  • Keep the bobbin case clean to maintain smooth and consistent thread delivery.
  • Periodically remove lint and thread debris from the bobbin case and hook area according to the embroidery machine manufacturer's maintenance instructions.
  • Avoid damaging or bending the magnetic or paper sides when handling the bobbins.
  • Replace damaged bobbins rather than attempting to run them through the machine.
  • Store unused bobbins in their original box or a clean, dry container to protect them from dust and contamination.
  • Monitor bobbin thread during longer embroidery runs to minimize unnecessary machine stops.
  • Test tension and stitch quality when changing thread, fabric, backing, needle size, or embroidery settings.
  • Follow the embroidery machine manufacturer's recommendations for bobbin-case maintenance and tension adjustment.

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