Fil Patchwork Fil Au Chinois: Choosing the Right Weight for Piecing
By BOHIN | Published: 2026-11-04
Category: 商品レビュー
Learn how to choose the right weight of Fil Au Chinois patchwork thread for hand or machine piecing, with practical decision rules and honest trade-offs.
Quick answer
For most piecing, use Fil Au Chinois patchwork thread in its standard No. 50 weight. It suits both hand and machine piecing, but adjust your needle and tension if you switch methods.
Why thread weight matters for piecing
Thread weight affects seam bulk, stitch strength, and how easily the thread passes through fabric. A lighter thread makes flatter seams; a heavier thread adds durability but can create bulk in fine piecing. Fil Au Chinois patchwork thread is a No. 50 glazed polyester core wrapped in cotton, which balances strength and smoothness for piecing without excess thickness.
Hand piecing vs machine piecing: same thread, different setup
The same No. 50 thread works for both methods, but the needle and tension change. For hand piecing, use a shorter length (about 18 inches) to reduce fraying and tangling. For machine piecing, use a new needle sized for the fabric—typically 70/10 or 80/12 for quilting cotton—and test tension on a scrap first. Because the thread is glazed, it slides smoothly through the machine, but a too-tight top tension can still cause puckering.
When to consider a different weight
If you are piecing very fine fabrics like silk or lawn, a lighter thread (e.g., 60 or 80 weight) may reduce seam bulk. For heavy fabrics like denim or canvas, a heavier thread (e.g., 40 weight) may be needed for strength. Fil Au Chinois patchwork thread is not available in other weights, so for those specialized cases you would need a different thread line. Also, if you prefer a matte finish, note that this thread has a slight sheen from the glazing process.
Decision rules for choosing Fil Au Chinois patchwork thread
- For hand piecing: Use No. 50 Fil Au Chinois thread with a short length (18–20 inches) and a needle appropriate for hand piecing (e.g., betweens size 10 or 11). The glazed finish helps prevent tangling. Test a small sample to confirm the thread doesn’t shred with your needle choice.
- For machine piecing: Use No. 50 Fil Au Chinois thread with a 70/10 or 80/12 needle for quilting cotton. Set a moderate tension and sew a test seam to check for puckering. If puckering occurs, adjust tension before starting your project.
- For color matching: Choose a thread color that blends with the dominant fabric or matches the darker fabric in the seam. With 30 colors available, you can find a close match for most palettes. Buy one spool to test color under your lighting before committing to multiple spools.
- When to choose a different thread: If you are piecing very lightweight or heavy fabrics, or need a specific thread weight other than No. 50, select a thread designed for that purpose. Fil Au Chinois patchwork thread is optimized for standard piecing. Keep a spool of No. 50 for general piecing and specialized threads for exceptions.
Product facts
- Fil Patchwork - Fil Au Chinois: Fil Au Chinois patchwork thread is a No. 50 glazed polyester thread wrapped in cotton, available in 30 colors. The No. 50 weight is versatile for most piecing, and the 30-color range helps you match or contrast with your fabrics.
Fil Patchwork - Fil Au Chinois
Is Fil Au Chinois patchwork thread right for you?
Best for
- Quilters who piece with quilting cotton by hand or machine
- Sewists who want a strong, smooth thread that works in both methods
- Projects where a slight sheen is acceptable or desired
Not for
- Piecing ultra-fine fabrics where a lighter thread is needed
- Heavy-duty projects requiring a thicker thread
- Sewists who prefer a completely matte thread finish
