{"product_id":"madeira-magnetic-sided-white-bobbin-style-l-134yd-144ct","title":"Madeira Magnetic Sided White Bobbin Style \"L\" 134yd - 144ct","description":"\u003csection class=\"spsi-product-copy\" aria-label=\"Product Description\"\u003e\n  \u003cdiv class=\"spsi-product-card\"\u003e\n\n    \u003ch2 class=\"spsi-title\"\u003e\n      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.\n    \u003c\/h2\u003e\n\n    \u003cp class=\"spsi-subtitle\"\u003e\u003cstrong\u003eCharacteristics\u003c\/strong\u003e\u003c\/p\u003e\n\n    \u003cdiv class=\"spsi-block\"\u003e\n      \u003cp\u003e\n        \u003cstrong\u003eMadeira Magnetic Sided White Bobbin Style \"L\"\u003c\/strong\u003e is a professional pre-wound embroidery bobbin designed to provide smooth thread delivery, consistent tension, and dependable performance in compatible commercial embroidery machines.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"spsi-block\"\u003e\n      \u003cp\u003e\n        Each bobbin combines a \u003cstrong\u003emagnetic side on one side with a paper side on the other\u003c\/strong\u003e, 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.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"spsi-block\"\u003e\n      \u003cp\u003e\n        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.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"spsi-block\"\u003e\n      \u003cp\u003e\n        Each Style L bobbin is pre-wound with \u003cstrong\u003e134 yards of continuous white polyester filament thread\u003c\/strong\u003e. 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.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"spsi-block\"\u003e\n      \u003cp\u003e\n        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.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"spsi-block\"\u003e\n      \u003cp\u003e\n        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.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"spsi-block\"\u003e\n      \u003cp\u003e\n        Each box contains \u003cstrong\u003e144 pre-wound white Style L bobbins\u003c\/strong\u003e, providing a convenient bulk supply for embroidery shops, production departments, contract decorators, and other professional embroidery operations.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"spsi-accordion\"\u003e\n\n      \u003c!-- Dropdown: Features --\u003e\n      \u003cdiv class=\"spsi-accordion-trigger\"\u003e\n        \u003cspan\u003eFeatures\u003c\/span\u003e\n        \u003cspan class=\"spsi-arrow\"\u003e▼\u003c\/span\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"spsi-accordion-content\"\u003e\n        \u003cul class=\"spsi-list\"\u003e\n          \u003cli\u003eProfessional Madeira machine embroidery bobbins\u003c\/li\u003e\n          \u003cli\u003ePre-wound for convenient, production-ready use\u003c\/li\u003e\n          \u003cli\u003eStyle L bobbin configuration\u003c\/li\u003e\n          \u003cli\u003eMagnetic-sided construction\u003c\/li\u003e\n          \u003cli\u003eMagnetic side on one side\u003c\/li\u003e\n          \u003cli\u003ePaper side on opposite side\u003c\/li\u003e\n          \u003cli\u003eMagnetic side helps prevent bobbin backlash\u003c\/li\u003e\n          \u003cli\u003eHelps provide uniform bobbin tension\u003c\/li\u003e\n          \u003cli\u003eDesigned for consistent tension throughout the life of the bobbin\u003c\/li\u003e\n          \u003cli\u003eHelps promote smooth and consistent thread delivery\u003c\/li\u003e\n          \u003cli\u003eContinuous polyester filament construction\u003c\/li\u003e\n          \u003cli\u003eHelps reduce lint buildup in metal bobbin cases\u003c\/li\u003e\n          \u003cli\u003eWhite bobbin thread\u003c\/li\u003e\n          \u003cli\u003e134 yards of thread per bobbin\u003c\/li\u003e\n          \u003cli\u003e144 bobbins per box\u003c\/li\u003e\n          \u003cli\u003eEliminates the need to manually wind individual bobbins\u003c\/li\u003e\n          \u003cli\u003eConsistent pre-wound thread quantity\u003c\/li\u003e\n          \u003cli\u003eSuitable for compatible commercial embroidery machines\u003c\/li\u003e\n          \u003cli\u003eExcellent for high-volume embroidery production\u003c\/li\u003e\n          \u003cli\u003eHelps reduce production interruptions associated with inconsistent bobbin winding\u003c\/li\u003e\n          \u003cli\u003eConvenient bulk box for professional embroidery shops\u003c\/li\u003e\n        \u003c\/ul\u003e\n      \u003c\/div\u003e\n\n      \u003c!-- Dropdown: Specifications --\u003e\n      \u003cdiv class=\"spsi-accordion-trigger\"\u003e\n        \u003cspan\u003eSpecifications\u003c\/span\u003e\n        \u003cspan class=\"spsi-arrow\"\u003e▼\u003c\/span\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"spsi-accordion-content spsi-specs\"\u003e\n\n        \u003cdiv class=\"spsi-specs-row\"\u003e\n          \u003cdiv class=\"spsi-specs-label\"\u003eBrand\u003c\/div\u003e\n          \u003cdiv class=\"spsi-specs-value\"\u003eMadeira\u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"spsi-specs-row\"\u003e\n          \u003cdiv class=\"spsi-specs-label\"\u003eProduct\u003c\/div\u003e\n          \u003cdiv class=\"spsi-specs-value\"\u003eMagnetic Sided Embroidery Bobbin\u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"spsi-specs-row\"\u003e\n          \u003cdiv class=\"spsi-specs-label\"\u003eMadeira Item Number\u003c\/div\u003e\n          \u003cdiv class=\"spsi-specs-value\"\u003e308-509\u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"spsi-specs-row\"\u003e\n          \u003cdiv class=\"spsi-specs-label\"\u003eProduct Type\u003c\/div\u003e\n          \u003cdiv class=\"spsi-specs-value\"\u003ePre-Wound Embroidery Bobbin\u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"spsi-specs-row\"\u003e\n          \u003cdiv class=\"spsi-specs-label\"\u003eBobbin Style\u003c\/div\u003e\n          \u003cdiv class=\"spsi-specs-value\"\u003eStyle L\u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"spsi-specs-row\"\u003e\n          \u003cdiv class=\"spsi-specs-label\"\u003eConstruction\u003c\/div\u003e\n          \u003cdiv class=\"spsi-specs-value\"\u003eMagnetic-Sided \/ Paper-Sided\u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"spsi-specs-row\"\u003e\n          \u003cdiv class=\"spsi-specs-label\"\u003eMagnetic Side\u003c\/div\u003e\n          \u003cdiv class=\"spsi-specs-value\"\u003eYes\u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"spsi-specs-row\"\u003e\n          \u003cdiv class=\"spsi-specs-label\"\u003ePaper Side\u003c\/div\u003e\n          \u003cdiv class=\"spsi-specs-value\"\u003eYes\u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"spsi-specs-row\"\u003e\n          \u003cdiv class=\"spsi-specs-label\"\u003eThread Material\u003c\/div\u003e\n          \u003cdiv class=\"spsi-specs-value\"\u003ePolyester\u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"spsi-specs-row\"\u003e\n          \u003cdiv class=\"spsi-specs-label\"\u003eThread Construction\u003c\/div\u003e\n          \u003cdiv class=\"spsi-specs-value\"\u003eContinuous Filament\u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"spsi-specs-row\"\u003e\n          \u003cdiv class=\"spsi-specs-label\"\u003eThread Color\u003c\/div\u003e\n          \u003cdiv class=\"spsi-specs-value\"\u003eWhite\u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"spsi-specs-row\"\u003e\n          \u003cdiv class=\"spsi-specs-label\"\u003eThread Length\u003c\/div\u003e\n          \u003cdiv class=\"spsi-specs-value\"\u003e134 Yards per Bobbin\u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"spsi-specs-row\"\u003e\n          \u003cdiv class=\"spsi-specs-label\"\u003eQuantity\u003c\/div\u003e\n          \u003cdiv class=\"spsi-specs-value\"\u003e144 Bobbins per Box\u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"spsi-specs-row\"\u003e\n          \u003cdiv class=\"spsi-specs-label\"\u003ePre-Wound\u003c\/div\u003e\n          \u003cdiv class=\"spsi-specs-value\"\u003eYes\u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"spsi-specs-row\"\u003e\n          \u003cdiv class=\"spsi-specs-label\"\u003ePrimary Application\u003c\/div\u003e\n          \u003cdiv class=\"spsi-specs-value\"\u003eMachine Embroidery\u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"spsi-specs-row\"\u003e\n          \u003cdiv class=\"spsi-specs-label\"\u003eRecommended Environment\u003c\/div\u003e\n          \u003cdiv class=\"spsi-specs-value\"\u003eCommercial \/ Production Embroidery\u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"spsi-specs-row\"\u003e\n          \u003cdiv class=\"spsi-specs-label\"\u003eBobbin Case\u003c\/div\u003e\n          \u003cdiv class=\"spsi-specs-value\"\u003eCompatible Style L Metal Bobbin Cases\u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"spsi-specs-row\"\u003e\n          \u003cdiv class=\"spsi-specs-label\"\u003eManufacturer\u003c\/div\u003e\n          \u003cdiv class=\"spsi-specs-value\"\u003eMadeira USA\u003c\/div\u003e\n        \u003c\/div\u003e\n\n      \u003c\/div\u003e\n\n      \u003c!-- Dropdown: Usage Tips --\u003e\n      \u003cdiv class=\"spsi-accordion-trigger\"\u003e\n        \u003cspan\u003eUsage Tips\u003c\/span\u003e\n        \u003cspan class=\"spsi-arrow\"\u003e▼\u003c\/span\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"spsi-accordion-content\"\u003e\n        \u003cul class=\"spsi-list\"\u003e\n          \u003cli\u003eConfirm that the embroidery machine and bobbin case are compatible with Style L bobbins before installation.\u003c\/li\u003e\n          \u003cli\u003eInstall the bobbin with the correct orientation according to the embroidery machine or bobbin-case manufacturer's instructions.\u003c\/li\u003e\n          \u003cli\u003eMadeira recommends removing the anti-backlash spring from compatible metal bobbin cases when using magnetic bobbins.\u003c\/li\u003e\n          \u003cli\u003eDo not operate a magnetic-sided bobbin against an anti-backlash spring unless specifically approved for the bobbin case being used.\u003c\/li\u003e\n          \u003cli\u003eCheck bobbin tension after switching from conventional paper-sided or sideless bobbins to magnetic-sided bobbins.\u003c\/li\u003e\n          \u003cli\u003eUse a bobbin tension gauge when precise and repeatable lower-thread tension is required.\u003c\/li\u003e\n          \u003cli\u003eAdjust bobbin tension according to the embroidery machine, upper thread, garment, backing, needle, and design requirements.\u003c\/li\u003e\n          \u003cli\u003eKeep the bobbin case clean to maintain smooth and consistent thread delivery.\u003c\/li\u003e\n          \u003cli\u003ePeriodically remove lint and thread debris from the bobbin case and hook area according to the embroidery machine manufacturer's maintenance instructions.\u003c\/li\u003e\n          \u003cli\u003eAvoid damaging or bending the magnetic or paper sides when handling the bobbins.\u003c\/li\u003e\n          \u003cli\u003eReplace damaged bobbins rather than attempting to run them through the machine.\u003c\/li\u003e\n          \u003cli\u003eStore unused bobbins in their original box or a clean, dry container to protect them from dust and contamination.\u003c\/li\u003e\n          \u003cli\u003eMonitor bobbin thread during longer embroidery runs to minimize unnecessary machine stops.\u003c\/li\u003e\n          \u003cli\u003eTest tension and stitch quality when changing thread, fabric, backing, needle size, or embroidery settings.\u003c\/li\u003e\n          \u003cli\u003eFollow the embroidery machine manufacturer's recommendations for bobbin-case maintenance and tension adjustment.\u003c\/li\u003e\n        \u003c\/ul\u003e\n      \u003c\/div\u003e\n\n      \u003c!--\n      Dropdown: Data Sheets\n      \u003cdiv class=\"spsi-accordion-trigger\"\u003e\n        \u003cspan\u003eData Sheets\u003c\/span\u003e\n        \u003cspan class=\"spsi-arrow\"\u003e▼\u003c\/span\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"spsi-accordion-content\"\u003e\n        \u003cul class=\"spsi-datasheet-list\"\u003e\n        \u003c\/ul\u003e\n      \u003c\/div\u003e\n      --\u003e\n\n    \u003c\/div\u003e\n\n    \u003c!-- SPSI Footer --\u003e\n    \u003cdiv class=\"spsi-footer\"\u003e\n      \u003cp\u003e\n        Questions? Need help with Madeira Style L magnetic bobbins, embroidery thread tension, or selecting the right bobbin for your embroidery machine?\n        \u003cstrong\u003eFeel free to live chat with us if you have any questions.\u003c\/strong\u003e\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\u003c\/section\u003e","brand":"Madeira USA Ltd.","offers":[{"title":"Default Title","offer_id":44383791153332,"sku":"MD-308-509","price":46.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0513\/2635\/3588\/files\/308-509-white_ad8f8a0f-118f-47fc-a71a-8f82ebb08aa7.png?v=1789402292","url":"https:\/\/spsi.com\/products\/madeira-magnetic-sided-white-bobbin-style-l-134yd-144ct","provider":"SPSI Inc.","version":"1.0","type":"link"}