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Frequently asked questions
Do all Sew Stack pieces fit together?
Yes. Every tray, box and lid fits every other, in any order. That's the point of the system — buy what you need today and add to it later.
Which bobbins fit the bobbin tray?
Class 15 (A-style), class 66, L-style and M-style bobbins. Bernina bobbins also work if you store them in every other slot, and customers use them for Viking Epic bobbins too. See the fit guide.
Which thread spools fit?
Small and medium spools such as Aurifil, Mettler, Gütermann and Sulky. Large cones don't fit.
Will bobbins fall out if I tip the stack over?
No. Each bobbin is held on edge on molded dimples that seat in its center hole, so it stays put even upside down.
Why use a lid?
It keeps dust and lint off your thread and bobbins — anything on the thread ends up in your machine's tension discs and bobbin case. It also blocks light, protecting thread from UV fading. That matters most for premium and specialty threads (Aurifil, silk, metallics), which are an investment. It also keeps curious cats from batting bobbins across the floor.
What is it made of?
A soft-touch, flexible, latex-free material, molded in the USA. It grips gently, doesn't rattle and doesn't crack if dropped.
Are bobbins or thread included?
No — trays and lids only.
How much is shipping?
US orders over $45 ship free. Smaller orders and international shipping are calculated at checkout.
Can I return something?
Yes — most new, unopened items within 30 days of delivery. See shipping & returns.
Do you ship internationally?
Yes, to most countries. Rates are calculated at checkout.
Still wondering? Contact us or call 206-999-4095.