Fil-Tec Magna-Glide Delights Pre-Wound Bobbins
Magna-Glide Delights by Fil-Tec are the most widely trusted pre-wound bobbins in production longarm quilting. Available in M-size (the standard for Gammill and many other longarm machines), Magna-Glide Delights are sold in jars — a full bobbin supply that loads quickly and provides consistent tension from the first bobbin to the last. For self-wound bobbin thread, the benchmark is Bottom Line 60wt cones.
Why Pre-Wound Bobbins?
Winding your own bobbins adds time, introduces tension variables, and risks running out of bobbin mid-quilt. Magna-Glide Delights are wound to precise specifications on specialized equipment — the thread tension, fill amount, and wind consistency are identical across every bobbin in every jar. For production longarm studios, this translates directly to consistent quilt quality and faster throughput.
Available Colours
Magna-Glide Delights are available in a comprehensive colour range designed to match bobbin thread to backing fabric. Core colours include: White (10000) — the most-used neutral; Black (11001); Cream (20001); Medium Grey (10424); Light Grey (17543); Cool Grey 3 (10CG3); Warm Grey 4 (10WG4); Linen (10WG1); and dozens more spanning the full neutral and colour spectrum.
Matching Bobbins to Backing
The professional approach: match your bobbin colour to the quilt backing so bobbin thread doesn't show on the back. Linda's Magna-Glide Delights colour range covers every common backing colour — from the brightest white through warm creams, all the greys, and the full spectrum of colours for coloured minky and fabric backs.
Shop All Magna-Glide Delights Colours
Frequently Asked Questions
What does the magnetic core actually do?
The Magna-Glide magnetic core applies its own consistent drag as the bobbin spins, delivering uniform tension from full to empty — and in many machines eliminating the backlash spring adjustment entirely. It's the reason these bobbins hold tension where generic pre-wounds drift.
Pre-wounds or self-wound Bottom Line?
Production studios run pre-wounds for throughput and tension consistency; self-winding from Bottom Line cones wins on colour range and per-yard cost. Many studios do both — Magna-Glide jars in the workhorse neutrals, self-wound for exact colour matches.
How many quilts does a jar cover?
An M-size pre-wound carries substantially more usable yardage than a hand-wound equivalent (no fill inconsistency), and a typical queen edge-to-edge consumes several bobbins. Studios track it simply: one jar of White handles many quilts, and running two jar colours — White and Cream — covers most light backings without changing anything else.
