Singer Heavy Duty 6700C review
VerdictSpecs checked against Singer data · Checked Sep 2026
7.4/107.4
out of 10
The 6700C is the middle of Singer's computerized Heavy Duty line, adding lettering, a speed slider and a 10-foot kit with a walking foot to the 6600C head while leaving the thread cutter to the 6800C.
Who it's for
A beginner or returning sewer who wants a walking foot, speed control and monogram lettering on a 1,100 spm metal-frame machine under $350.
Skip it if
You want an automatic thread cutter or needle up/down button, or you would rather have dials than menus on a heavy fabric machine.
Price bandUnder $500
$ under 500Computerized
Check price at Sewing Machines PlusAffiliate link · opens new tabLast seen $330 on September 29, 2026 at Sewing Machines Plus. Today's price is on the Sewing Machines Plus page.
Real cost to get sewing
Machine $ under 500Extension table for quilting, sold separately or in the Walmart bundleExtra Class 15 transparent bobbins beyond the 4 includedDenim and leather needles for heavy fabricHard case; only a soft cover is included
Specs
Research pass 2026-09-29 · manufacturer page check pendingSource: amazon.com · sewingmachinesplus.com · bobbinhub.com · kenssewingcenter.com · sewingpartsonline.com · singer.com. Bracketed cells are values the manufacturer does not publish; we never fill a spec we can't source.
Where sources disagree
- Stitch count: Singer's page is quoted as 200 built-in stitch applications while Amazon, Walmart and dealer titles say 411 stitch applications. No source gives a plain count of stitch patterns. Catalog leaves stitchCount null and quotes both numbers.
- Weight: 15.4 lb (parts dealer) vs 14.6 lb (Amazon) vs 16.3 lb (a review blog). Catalog will use 15.4 lb and flag [verify].
- Type label: sewingpartsonline titles the page 'Heavy Duty 6700C Mechanical Sewing Machine'. Singer, Amazon and every other source call it computerized. Treated as a dealer typo.
- Buttonhole styles: 7 (Ken's Sewing Center) vs '1-step buttonhole' with no count (Amazon title). Catalog will use 7 flagged [verify].
Manufacturer claims we quote but do not assert (5)
- "Heavy Duty" (Singer series name, product page; it is a model line, not a duty rating)
- "a workhorse with endless possibilities" (manufacturer claim, repeated on the Sewing Machines Plus listing)
- "Strong Motor with Enhanced Piercing Power" (manufacturer claim in the Walmart listing title)
- "able to sew through thick fabrics like denim and leather with ease" (manufacturer claim, singer.com product page)
- "411 stitch applications" (manufacturer count of techniques, not of built-in stitch patterns)
Size and space
Throat space, drawn to scaleThroat space is the distance from the needle to the machine body: how much rolled quilt fits through.
Weight15.4 lbLight enough to move between table and shelf.
Table footprint17.5 x 7.5 x 11 (W x D x H, Amazon listing) inAdd room on the left for the fabric to spill.
Strengths
10 presser feet including even feed, open toe and cording feet on Singer's accessory list.
Speed control slider and adjustable presser foot pressure, both absent on the 6600C.
Same 6.4 in throat and 1,100 spm as the 6800C at a lower price.
Weaknesses
No automatic thread cutter and no needle up/down button.
Stitch count is marketed as 411 applications with no plain count of patterns.
Owner help threads cluster on top thread tension on new units.
Check before you buy
3 checks01
Extension table bundleWalmart lists an HD6700EXTBUN bundle with an extension table. The base box does not include one. If quilting, price the bundle against buying the table separately.
02
Applications are not stitches411 is Singer's count of techniques. Ask the dealer for the stitch chart or check the manual to see the actual pattern list before comparing with a machine that quotes built-in stitches.
03
Tension on first useOwner threads describe looping top thread on new machines. Thread with the presser foot up and confirm the take-up lever is engaged before assuming a fault.
Buying from Sewing Machines Plus
Checked Sep 2026WarrantySinger publishes: 25 yr limited on machine head, 2 yr on motor, light, wiring, switches, speed control and electronics, 90 days on adjustments, belts, rings, bulbs and attachments. Warranty runs through an authorized dealer; confirm SMP is one for Singer before you buy.
ReturnsSewing Machines Plus lists a 60-day return window; the buyer pays return shipping and opened machines may be refunded as store credit. Restocking fee: [verify]. Re-check the policy page before ordering a heavy machine.
ServicingWarranty repairs go through Singer's authorized service network. Whether a local Singer dealer will service a machine bought online varies by dealer; ask before you buy.
Setup and lessonsOnline orders may not include the lessons a local dealer offers. Ask before you buy if that matters to you.
Owner and buyer signals
Paraphrased, attributed. We did not operate this machine.negative
Several owner help threads describe top thread looping mid-seam on a new 6700C after a clean test swatch; the answers point to rethreading through the tension discs, cleaning lint from the bobbin area, and the small bobbin case screw.justanswer.com
mixed
Walmart owner reviews (4 of 5 stars over about 200 reviews) call it smooth and good for quilting, curtains and clothing, with one experienced sewer saying it is not a first machine.walmart.com
mixed
PatternReview members discussing the launch of Singer's computerized Heavy Duty line note that earlier HD models were all mechanical and question what the electronics add on a budget frame.sewing.patternreview.com
Questions people ask
How many stitches does the Singer 6700C have?
Singer markets 411 stitch applications, and its own page is quoted at 200 built-in stitch applications. Neither is a plain count of stitch patterns, so we list both and flag the row.
Does the 6700C have an automatic thread cutter?
No. It has a tie-off button. The automatic thread cutter and needle up/down button are 6800C features.
Does the 6700C come with a walking foot?
Yes. The even feed (walking) foot is one of 10 feet on the accessory list, along with open toe and cording feet.
What is the throat space?
6.4 in (163 mm) from needle to tower, per the Sewing Machines Plus listing.
How much does it weigh?
15.4 lb per the parts dealer. Amazon lists 14.6 lb and one blog 16.3 lb, so treat the figure as approximate.
Can the 6700C sew letters?
Yes. A built-in lettering font is listed for monogramming; one comparison site counts 2 fonts.
Is the 6700C good for quilting?
It has a 6.4 in throat, a walking foot and a speed slider, which suits piecing and small quilts. Owner reviews call it good for quilting; the harp is small for anything larger than a lap quilt.
What is the warranty?
25 years on the head, 2 years on motor and electronics, 90 days on adjustments and attachments, per Singer's warranty page.
What is the difference between the 6700C and the 6800C?
Same motor, frame and throat. The 6800C adds an automatic thread cutter, needle up/down, start/stop button, stitch memory and more stitches.
