There are currently three popular bobbin sizes for machines: Class 15, Class L and Class M bobbins. Industrial machines usually have specialty bobbins or may not use a bobbin system at all. Most …

This Bobbin Catalog and Design Manual represents over 58 years of Cosmo’s bobbin experience. It contains a newly revised and expanded edition of Cosmo’s famous Bobbin Design Manual.

pre-wound bobbins are wound with our 80wt DecoBobTM thread in a reusable plastic bobbin, which means there is no glue or wax holding it together (which also makes for a happy machine!)

Create a small amount of slack in the thread line between the tension disks and bobbin (approximately to the edge of the machine or slightly more). While holding the tail and leaving the slack, press the …

Pass bobbin thread through the wire loop (shaped like an inverted “U” at the front of the bobbin case) and allow 4-6 inches to hang from it, down across the front of the bobbin case.

A wooden or bone bobbin in two parts joining with a screw or push fit, and having a hollow shank containing loose miniature bobbin that jumps out ( falls) when it is opened.

Prewound Bobbin Style Guide Prewound Bobbin Style Guide is called its “style”. Each sewing machine make and model uses a specific bobbin style and will not work with other ailable for their products. …