Superior Bottom Line 60wt Polyester Thread White 3000 Yards Longarm

The Superior Bottom Line White — 60wt Polyester 3,000 Yards is Superior Threads’ ultra-fine 60-weight polyester thread designed specifically for use in the bobbin of longarm and domestic quilting machines. Bottom Line’s fine 60wt construction creates minimal bobbin bulk, allowing more thread per bobbin fill and reducing bobbin changes during production runs.

Frequently Asked Questions

Is Bottom Line designed for the bobbin or top thread?

Bottom Line is primarily designed as a bobbin thread. Its fine 60wt construction places it in the machine bobbin, where it provides a smooth, consistent tension without the bulk of standard thread weights. Some quilters also use it as top thread for a very fine stitching line.

Why use a 60wt bobbin thread with a 40wt top thread?

The finer bobbin thread creates a balanced stitch that pulls slightly to the back, which is desirable in longarm quilting where the quilting design should be visible on the top surface. The fine Bottom Line bobbin minimizes bobbin thread visibility on the quilt top.

Is Bottom Line compatible with all longarm pre-wound bobbin systems?

Bottom Line is designed for winding on standard bobbin systems or use as pre-wound bobbins. Check your specific longarm machine’s bobbin size requirements before purchasing.

How does Bottom Line compare to Magna-Glide pre-wound bobbins?

Both are fine-weight bobbin solutions. Magna-Glide provides the convenience of pre-wound bobbins; Bottom Line requires winding your own bobbins. Bottom Line on a winder provides more flexibility in bobbin quantity.

Is 3,000 yards sufficient for extended production?

For production longarm use, Bottom Line is typically purchased in larger cone quantities. The 3,000-yard format is appropriate for domestic machine use or lighter longarm production.