10CG3 Cool Grey 3 Magna-Glide Delights Bobbin Jar is the universal-grey bobbin jar — the middle cool grey that blends against more backings than any other single color, in pre-wound magnetic-core bobbins.
Product Details
- Color: 10CG3 Cool Grey 3 — exact match to the Cool Grey 3 Glide king spool
- Format: Jar of ~10–12 pre-wound M-size bobbins, magnetic-core constant tension
- Thread: Lint-free filament polyester
- Machines: Most major M-size longarms; verify bobbin size before ordering
- Best under: Light-to-medium backings of nearly any color — the one-jar grey solution
Frequently Asked Questions
- Why is CG3 the studio's default bobbin?
- Grey neutralizes — against light, medium, and many multicolor backings a mid cool grey blends where white flashes and dark contrasts. One jar covers the widest share of the queue.
- Can it run under white or cream top thread?
- Yes — that's its signature move: many studios run CG3 in the bobbin regardless of top color whenever the backing is light-to-medium, because any pull-through reads as shadow rather than contrast.
- Where does it stop working?
- Bright white and very dark backings — white backs want the White jar, dark backs want Black. CG3 owns everything between.
- Matched top-and-bobbin work?
- The jar matches the 10CG3 king spool exactly — for grey quilts, matched CG3 top and bobbin gives one continuous color through the sandwich.
- What keeps tension consistent jar after jar?
- Industrial pre-winding plus the magnetic core — tension at the last stitch of the last bobbin equals the first, which is the whole Magna-Glide proposition.

