The short answer
Aurifil Mako Cotton 50wt is the fine 2-ply cotton picked as the answer in an r/quilting “go-to cotton thread” thread, Gutermann Natural Cotton is a mid-size mercerized spool for everyday cotton sewing, and Connecting Threads Essential puts 1,200 yd of 50 wt cotton on one budget spool.
Our verdict
Top Picks
The best thread for a sewing machine depends on the seam: polyester has “a little bit of stretch”, so Suzy Quilts advises it for anything you wear, while quilters favour cotton for quilting cotton and hot pressing (owners report polyester melting under the iron). With cotton, the weight matters as much as the brand: 50 wt for piecing and most sewing, 40 wt for quilting stitches that show, 30 wt for bold lines. Below, eight 100% cotton machine threads from eight brands, compared on weight, ply, length and needle from the makers and listings.
Finder
Find a cotton thread for your project and budget
Pick what you sew and a price tier. Tiers are per item as sold, from a 500 yd spool to a 3,000 yd cone, not per yard. For garments, cotton suits low-strain woven seams; use polyester for knits. The suggestion is our editorial starting point, not a test result.
Price tier legend: $ = entry level, $$ = mid-range, $$$ = premium, per item as sold and relative to the products in this guide, not per yard.
Compare the picks
Compare the cotton threads
Each row is the exact item we link; “Not published” means no maker or listing figure.
Aurifil 50wtBest for PiecingPiecing, quilting50 wt1422 yd$16.39
Evidence: Guilty Quilty Studio, Aurifil 50 wt piecing test; spool size and colour not stated
Gutermann CottonBest Everyday CottonGarments, piecing50 wt876 yd$12.02
Evidence: owner reports, no independent test
Mettler Silk-FinishBest for Natural-Fibre GarmentsGarments, quiltingNo. 50547 yd$9.49
Evidence: owner reports, no independent test
MasterPiece 50 wtBest 3-Ply Egyptian CottonPiecing, quilting, sewing50 wt600 yd$16.34
Evidence: owner reports, no independent test
Konfetti 50 wtBest Aurifil AlternativePiecing, quilting50 wt1094 yd$12.81
Evidence: Guilty Quilty Studio, Konfetti 50 wt piecing test; spool size and colour not stated
CT EssentialBest Budget Big SpoolPiecing, quilting, sewing50 wt1200 yd$8.99
Evidence: owner reports, no independent test
Signature 40 wtBest Cone for QuiltingQuilting40 wt3000 yd$15.62
Evidence: Stitched in Color (2018), a 40 wt 3,000 yd cone on a longarm; colour not stated, not a home machine; found linty, some breakage
Sulky 30 wtBest Bold 30 wt CottonQuilting, decorative30 wt500 yd$9.31
Evidence: maker specs only, no independent test
How We Chose the Cotton Threads
How this guide was built
built from manufacturer documentation, published third-party reviews and owner reports; we have not tested these products ourselves.
What decided the picks
- 100% cotton only: cotton-wrapped polyester core thread is left out.
- Thread weight or needle size: with the ply, as the maker or listing gives them; needle published for 4 of 8.
- Spool length and colour count: where published.
- Machine and fabric fit: piecing, quilting or garments, as the maker names them.
- Lint: owner reports; makers’ low-lint claims named as claims.
- Availability: in stock on Amazon, new, on 8 November 2026.
Where the information comes from and what sewists report about cotton thread
Where the information comes from
Figures come from the makers’ pages (Aurifil, Mettler, Superior, WonderFil, Connecting Threads, Sulky) and the linked listings; Gutermann’s weight comes from retailer WAWAK. Two bloggers who do not sell thread ran threads here: Guilty Quilty Studio pieced the same blocks with Aurifil 50 wt and Konfetti, and Stitched in Color ran a Signature 40 wt cone on a longarm in 2018. Other picks rest on owner reports.
What sewists report about cotton thread
In the r/quilting thread “What is your go-to cotton thread?”, the poster selected “Aurifil 50 wt in dove gray”; others named Gütermann, MasterPiece, WonderFil, Mettler, Signature and Connecting Threads. Lint splits owners: one writes “Aurifil fills my machine with lint!!”, while the poster found Gütermann (line not stated) “very linty”.
Detailed Reviews
Aurifil Mako Cotton 50wt, 1,422 yd, Dove, Best for Piecing
Quilters who piece quilting cotton and want a fine thread on a large spool.
$16.39 from AmazonAs of Nov 9, 06:25 UTCVerdict
A fine 2-ply cotton that matched Konfetti in Guilty Quilty’s piecing test.
Evidence: Independently reviewed, same series. Guilty Quilty Studio: 50 wt, spool size and colour not stated.
Aurifil calls its 50 wt “strong and thin”, with “remarkably flat and crisp seams”; the listing says long-staple mercerized Egyptian cotton, made in Italy. Guilty Quilty Studio strip-pieced blocks with it and Konfetti and found “both threads worked equally well in my machine”, with the same lint and flat seams but “a lot more thread on the bobbin” with Aurifil. In r/quilting, one owner pieces with it “in dove grey”; others find it linty.
Specs (linked: 1,422 yd, Dove 2600)
Pros
- Fine 2-ply 50 wt cotton for flat seams, per Aurifil
- More thread per bobbin than 3-ply Konfetti in Guilty Quilty’s test
Cons
- Premium tier per spool
- Some owners find it linty or fussy in their machine
Who should buy it
Quilters who piece quilting cotton and want a fine thread on a large spool.
- Weight: 50 wt, 2-ply (maker)
- Length: 1,422 yd
- Needle: 80/12 Microtex, Universal, Quilting or Denim (maker)
- Price tier: $$$ (live Amazon price in the table above)
Gutermann Natural Cotton, 876 yd, Best Everyday Cotton
Sewists who want a cotton for piecing and low-strain natural-fibre seams.
$12.02 from AmazonAs of Nov 9, 06:25 UTCVerdict
A mercerized 50 wt cotton for piecing and natural-fibre sewing.
Evidence: No independent test; owner reports. r/quilting, machine piecing thread: 50 wt, 876 yd, another colour.
The listing calls it “100% mercerized natural cotton”, “Strong enough for the sewing machine”; retailer WAWAK lists the 876 yd line as 50 wt (Tex 20), long-staple 3-ply, “applicable for garment sewing”. One r/quilting owner writes “I like Gutermann 50wt cotton”, linking this 876 yd line; in the top-ranking r/sewing thread, a UK sewist finds Gütermann cotton (line not stated) “doesn’t snap as easily compared to other cottons of the same weight”. One garment sewist had seams break “on tighter pants”.
Specs (linked: 876 yd, Black)
Pros
- Mercerized long-staple cotton, 50 wt (Tex 20) per WAWAK
- 876 yd, a mid-size spool among the eight
Cons
- Owners split on lint: one calls Gütermann (line not stated) “very linty”
- Black in this listing; other colours are separate listings
Who should buy it
Sewists who want a cotton for piecing and low-strain natural-fibre seams.
- Weight: 50 wt, Tex 20, 3-ply (retailer WAWAK)
- Length: 876 yd
- Needle: not published
- Price tier: $$ (live Amazon price in the table above)
Mettler Silk-Finish Cotton 50, 547 yd, Best for Natural-Fibre Garments
Garment sewists working in woven cotton or linen with some ease (use polyester for knits).
$9.49 from AmazonAs of Nov 9, 06:25 UTCVerdict
A mercerized cotton with a sheen, for sewing and quilting per Mettler and garments per its listing; best on low-strain woven seams (use polyester for knits).
Evidence: No independent test; owner reports. r/sewing, cotton thread users: Mettler cotton, line and spool size not stated.
Mettler says mercerization makes Silk-Finish 50 “more tearproof, low-shrink and iron-proof”, and calls it “ideal for quilting and sewing” in up to 273 colours; the listing adds a “silk-like sheen”, “custom garments” and a needle of 80-90; Mettler’s page gives Nm 70-80 (shown for the 150 m spool). In r/sewing, a sewist who makes heirloom garments writes “I use Mettler – cotton, Aurafil – cotton, YLI – cotton”.
Specs (linked: 547 yd, White)
Pros
- Mercerized for a “tearproof, low-shrink and iron-proof” thread, per Mettler
- Up to 273 colours in the line, per Mettler
Cons
- 547 yd, one of the two shortest spools here
- Few owner reports name this line
Who should buy it
Garment sewists working in woven cotton or linen with some ease (use polyester for knits).
- Weight: No. 50 (maker); ply not published
- Length: 547 yd
- Needle: 80-90 (listing); Mettler’s page gives Nm 70-80 (150 m spool)
- Price tier: $ (live Amazon price in the table above)
Superior Threads MasterPiece 50 wt, 600 yd, Best 3-Ply Egyptian Cotton
Verdict
A 3-ply Egyptian cotton one Juki owner found the most consistent of several 50 wt threads.
Evidence: No independent test; owner reports. r/quilting, thread brands: MasterPiece 50 wt spool, colour not stated.
Superior designs MasterPiece “for piecing, sewing, and quilting” and calls it “a strong, low-lint cotton thread that doesn’t add bulk to your seams” (its claim). One r/quilting owner who tried several 50 wt threads found it “the most consistent and least lint in my machine”.
Specs (linked: 600 yd, #186 Blanc)
Pros
- Extra-long staple 3-ply cotton for piecing and quilting, per Superior
- An owner’s side-by-side pick for consistency
Cons
- Premium tier for 600 yd
- Needle size not published by Superior
- Weight: 50 wt, 3-ply (maker)
- Length: 600 yd
- Needle: not published
- Price tier: $$$ (live Amazon price in the table above)
WonderFil Konfetti 50 wt, 1,094 yd, Best Aurifil Alternative
Verdict
A double-gassed 3-ply cotton that tied Aurifil in Guilty Quilty’s piecing test.
Evidence: Independently reviewed, same series. Guilty Quilty Studio: Konfetti 50 wt, spool size and colour not stated.
WonderFil describes Konfetti as “50wt, 3-ply double-gassed and mercerized Egyptian cotton”, “Free of any type of wax or coating that can cause build up in machines”, for piecing and quilting among other uses. Konfetti was Guilty Quilty Studio‘s usual piecing thread, and it tied Aurifil there on tension, lint and seam flatness; the tester found Konfetti cheaper by the spool, Aurifil by the cone.
Specs (linked: 1,094 yd, Soft White)
Pros
- Double-gassed 3-ply cotton, per WonderFil
- Tied Aurifil on lint and flat seams in Guilty Quilty’s test
Cons
- Less thread per bobbin than 2-ply Aurifil in that test
- Few owner reports in the threads we read
- Weight: 50 wt, 3-ply (maker)
- Length: 1,094 yd (1,000 m)
- Needle: 80/12 Microtex, 90/14 Quilting or 80/12 Topstitch (maker)
- Price tier: $$ (live Amazon price in the table above)
Connecting Threads Essential, 1,200 yd, Best Budget Big Spool
Verdict
1,200 yd of 50 wt 3-ply cotton on one entry-level spool.
Evidence: No independent test; owner reports. r/quilting, go-to cotton thread: Essential cotton, spool size and colour not stated.
The listing calls Essential “50-weight thread crafted from 100% triple-ply, long-staple cotton” with a “smooth, low-lint finish” (its claim) on spools that “fit standard sewing machine spindles”. Connecting Threads itself sold it when we checked on 8 November 2026. In r/quilting, one owner “just tried Connecting Threads Essential 100% cotton thread” and “really like it”; others found Connecting Threads cotton (line not named) fuzzy or “very uneven”.
Specs (linked: 1,200 yd, White)
Pros
- 1,200 yd of 50 wt 3-ply cotton on one spool
- Sold by the brand on Amazon when we checked
Cons
- Owner reports on lint and evenness conflict
- Mercerization not stated by the maker
- Weight: 50 wt, 3-ply (listing)
- Length: 1,200 yd
- Needle: Topstitch 80/12 (maker)
- Price tier: $ (live Amazon price in the table above)
Signature Cotton Quilting 40 wt, 3,000 yd Cone, Best Cone for Quilting
Verdict
The most thread per item here, in a 40 wt for visible quilting; a 2018 longarm review found it linty with some breakage.
Evidence: Independently reviewed, same series. Stitched in Color: 40 wt 3,000 yd cone on a longarm, colour not stated.
The listing describes “100% long staple mercerized cotton” for machine quilting, made in India: “Low lint. 3-ply. 40wt. Cone thread”. Stitched in Color ran a 3,000 yd cone on a longarm in 2018 and found it “Linty and matte, basic thread”, with “Some tension challenges” and “Some breakage”. Other owners are kinder: “Signature is my go to for quilting”, one writes. Plan on a cone stand for a home machine.
Specs (linked: 3,000 yd cone, Linen)
Pros
- 3,000 yd of 40 wt quilting cotton on one cone
- Heavier stitch line than the 50 wt threads here
Cons
- Linty with some breakage on a longarm, per Stitched in Color
- 40 wt is “too chunky for a flat seam”, per Guilty Quilty Studio
- Weight: 40 wt, 3-ply (listing); Tex 40 (retailer Cleaner’s Supply)
- Length: 3,000 yd
- Needle: not published
- Price tier: $$$ (live Amazon price in the table above)
Sulky 30 wt Cotton, 500 yd, Best Bold 30 wt Cotton
Quilters who want visible, chunky quilting or decorative lines.
$9.31 from AmazonAs of Nov 9, 06:25 UTCVerdict
A heavier cotton for quilting and decorative lines you want seen.
Evidence: No independent test; maker specs. Source: Sulky.
Sulky says its 30 wt cotton is “1/3 thicker than your standard 40 Wt. quilting cotton”, “highly mercerized Egyptian cotton with a matte finish” for “quilting, serging, embroidery and other decorative projects”; the listing says made in Italy. We found no owner report on it; owners of 30 wt cotton advise a big needle and 30 wt on top only.
Specs (linked: 500 yd, Bright White)
Pros
- 30 wt cotton for bolder quilting lines, per Sulky
- Matte finish, per Sulky
Cons
- Too heavy for piecing or bobbins, per owners of 30 wt cotton
- No independent test or owner report found
- Weight: 30 wt (maker); ply not published
- Length: 500 yd
- Needle: not published
- Price tier: $ (live Amazon price in the table above)
Choosing Cotton Thread for Your Machine
When cotton beats polyester
Cotton holds up under “the heat of fast friction” better than polyester, per Suzy Quilts; under the iron, one r/quilting quilter wrote that “my iron melted some of the thread” on a Coats poly-cotton spool. Cotton also takes dye with cotton fabric, as one r/sewing owner notes. Polyester “has a little bit of stretch to it”, so Suzy Quilts advises it for anything you wear.
Which weight: piecing, quilting or garments
- Piecing: 50 wt. Guilty Quilty Studio calls 30 and 40 wt threads “too chunky for a flat seam”.
- Quilting: 40 wt is “more typical for machine or longarm quilting”, one r/quilting owner writes; 50 wt suits “subtle quilting”, per Aurifil.
- Bold quilting or topstitching: 30 wt, with a big needle and a finer thread in the bobbin, as owners advise.
- Garments: 50 wt cotton on woven natural fibres with some ease. In r/sewing, several owners had cotton seams pop under strain (“any seam where there may be any strain at all, ping!”). Use polyester for knits and tight fits.
Mercerized, long-staple and gassed
Mercerizing makes Mettler’s thread “more tearproof, low-shrink and iron-proof”, per Mettler. Seven of the eight are sold as long-staple cotton (Mettler’s page does not say); gassing burns off loose fibres, per WonderFil. These are maker descriptions, not test results.
Lint
In Guilty Quilty Studio’s test, with quality thread over 21 strips, most lint “actually came from the fabric and not the thread”. “All cotton thread will have lint,” one quilter notes, so brush out the bobbin area often.
Spools, cones and needles
Match the needle to the thread: the four published needle sizes here all include 80/12; see our sewing machine needle guide. For other thread jobs, see invisible thread, thread for Singer machines, sewing machines for quilters and Needles, Pins & Thread.
Frequently Asked Questions
Q. What is the best cotton thread for sewing machines?
For piecing, Aurifil Mako Cotton 50wt or WonderFil Konfetti, which tied in Guilty Quilty Studio’s test; on a budget, Connecting Threads Essential.
Q. Is cotton the best thread for a sewing machine?
Not for every job: quilters favour cotton for quilting cotton and hot pressing, and Suzy Quilts advises polyester for garments that stretch or take strain; owners report cotton seams breaking under strain.
Q. Can I sew clothes with cotton thread?
Yes, on woven natural fibres with some ease; owners report broken seams at stress points, so test a seam first.
Q. What weight of cotton thread is best for piecing?
50 wt. Aurifil is the only 2-ply among the six threads with a published ply, and in Guilty Quilty Studio’s test it fit more thread on a bobbin than 3-ply Konfetti.
Q. Is cotton thread linty?
Some lint is normal. Makers call MasterPiece, Konfetti, Essential and Signature low-lint (their claims); Stitched in Color found Signature linty on a longarm, and owners disagree brand by brand.
The bottom line
Final Verdict
Piecing: Aurifil Mako Cotton 50wt (check price), WonderFil Konfetti 50 wt (check price) or Superior Threads MasterPiece 50 wt (check price); on a budget, Connecting Threads Essential (check price). Everyday cotton: Gutermann Natural Cotton (check price); woven natural-fibre garments with some ease (use polyester for knits): Mettler Silk-Finish Cotton 50 (check price). Quilting: Signature Cotton Quilting 40 wt (check price) (most yardage; one longarm review found it linty), or Sulky 30 wt Cotton (check price) for bold lines. Test new thread on a scrap.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.
