This guide is sponsored by BO-MA, a Maribor-based importer and online shop that sells household sewing machines, overlock machines, embroidery machines and sewing accessories to buyers in Slovenia; readers there can see its mechanical, computerised and overlock sewing machines. The sponsor does not appear in the comparison below, and Dexitex does not rank shops or machine brands.
This guide starts with the fabric instead of the feature list (the number of stitches, a built-in buttonhole, a screen), because the cloth you sew decides how much a machine has to do. Sewing machine types for home sewing come in three main kinds: mechanical, computerised and overlock. A fourth, the sewing-embroidery machine, is a computerised machine that can take an embroidery unit.
The short answer: stable wovens and everyday projects sew well on a mechanical or computerised machine. Add an overlock when you sew stretch knits such as jersey, because it finishes stretchy edges in one step. Choose a computerised or sewing-embroidery machine when you want more stitch variety or embroidery. Then read the spec sheet of both the fabric and the machine before you commit.
Start with the fabric's weight and stretch
Two fabric properties drive the decision: how heavy the cloth is, and whether it stretches. Stretch comes mostly from construction. A knit is built from interlocking loops, so it gives and recovers. A woven interlaces warp (lengthwise) and weft (crosswise) threads at right angles, so it stays stable along those two directions and gives mainly on the bias, unless elastane is blended in. Weight is usually quoted in grams per square metre (GSM), the mass per unit area; the Wikipedia entry on grams per square metre defines the unit. If weave, knit or GSM are new terms, the fabric basics guide defines them first.
The weights in the table are illustrative typical ranges for this guide, not sourced figures: mills and lots vary, so verify the spec sheet of the cloth before you buy it for a project.
| Fabric | Illustrative weight | Stretch | What the machine has to do |
|---|---|---|---|
| Poplin, chambray, cotton shirting | about 100–160 GSM | little or none | Straight and zigzag seams; any machine type handles it |
| Single jersey (T-shirts) | about 140–200 GSM | high | Seams that stretch with the fabric, and clean edges that do not ladder |
| Cotton twill (trousers, chinos) | about 200–320 GSM | little | Steady feeding through two to four layers at the seams |
| Denim | about 340–475 GSM | little | Feeding through thick, stacked layers at hems and belt loops |
| Embroidery on a stable base | depends on the base | depends on the base | Dense decorative stitching, with a stabiliser under the fabric |
Denim is a sturdy cotton twill (Denim) and the heaviest cloth in the table. Its seams and hems stack several layers, so the maximum fabric thickness on a machine's spec sheet matters most for it.
What the fabric asks of each machine type
The general descriptions below follow the common definitions of a sewing machine and an overlock. Details differ between models, so treat them as type traits, not promises about any one machine.
Mechanical machines: stable wovens
A mechanical machine sets stitch type, length and width with dials and levers. It has fewer built-in functions than a computerised one, which makes it easy to learn. For poplin, shirting, cotton canvas and most blends, a straight stitch and a zigzag cover nearly every seam, so fewer functions are rarely a limit. For jersey, a narrow zigzag lets the seam stretch with the fabric.
Computerised machines: more stitches, less repetition
A computerised machine selects stitches electronically and usually offers far more of them, including stretch stitches suited to knits. Many models also do some steps by themselves, such as locking a stitch or cutting the thread. That matters on projects with many short seams, or when you switch between wovens and knits often. These machines generally cost more than mechanical ones with similar build.
Overlock machines: knit edges and seam finishes
An overlock (also called a serger) sews, overcasts and trims the fabric edge in one pass. It is used mostly on stretch knits such as jersey, because the looped stitch stretches with the fabric and the trimmed edge stays clean. It cannot make buttonholes and it cannot insert zips. Treat it as a finishing machine that works alongside a standard machine, not as the only machine for a project.
Sewing-embroidery machines: decorative work on a stable base
A sewing-embroidery machine is a computerised sewing machine. With an embroidery unit attached, it stitches designs from a hoop (machine embroidery). Dense designs pull on the cloth, so a stable woven or a knit backed with a stabiliser gives the cleanest result. Check whether the embroidery unit is included before you compare prices.
Matching the machine to your projects
Work backwards from the project, using the five-question fabric framework. Three common cases:
- Woven shirts, cotton totes, cushion covers. Fabrics of about 100–320 GSM with little stretch (illustrative). A mechanical or computerised machine covers the work. An overlock is optional, useful only if you want neat seam finishes on fraying wovens such as linen.
- Jersey T-shirts and fitted tops. High-stretch knits. A standard machine with a stretch or narrow zigzag stitch for the seams, plus an overlock for the edges. The overlock keeps knit edges tidy without extra handwork.
- Denim, canvas and heavy bags. Fabrics above about 340 GSM (illustrative), stacked at the seams. A sturdy mechanical or computerised machine with a stated thickness limit that covers your thickest seam, plus a needle sized for heavy fabric.
A common setup for people who sew both wovens and knits is one standard machine for buttonholes and zips, and an overlock for finishing stretch edges. Since an overlock cannot make buttonholes or insert zips, it does not replace the standard machine.
What to check before you buy
Machines are sold on their specifications, and a few details decide whether the purchase still suits your fabrics a few years later:
- Maximum fabric thickness. Compare it with your thickest seam, not with a single layer. Four layers of a heavy twill test a machine far more than the fabric's GSM suggests.
- Stitch list. For knits, look for a stretch stitch or a narrow zigzag; for wovens, a straight stitch, zigzag and a buttonhole cover most projects.
- Included accessories. Presser feet (zip foot, walking foot for layered or slippery fabrics), needles for knits and for denim, and, for embroidery, the hoop and the embroidery unit itself.
- Warranty, per model. Warranty periods often differ between models in the same range and between private and business buyers. Read the period for the exact model on its warranty card.
- Who services it. Some sellers repair machines themselves; others rely on authorised service centres listed on the warranty card. Find out which before you buy, and keep the card with the machine.
Frequently asked questions
Which sewing machine type should a beginner buy?
A mechanical or a computerised machine; both suit beginners. If you expect to sew mostly stable cottons at first, a mechanical machine has fewer functions to learn. If you want stretch stitches and stitch variety from the start, a computerised machine gives you more to work with, usually at a higher price.
Do I need an overlock to sew jersey?
Not always. A standard machine can sew many knit seams with a stretch stitch or a narrow zigzag, but an overlock finishes stretchy edges in one pass, which is why it is the machine most often used on jersey. If you sew knits often, it earns its place.
Can an overlock replace a sewing machine?
No. An overlock cannot make buttonholes or insert zips. Treat it as the finishing machine in a two-machine setup.
Which machine type suits denim?
A sturdy mechanical or computerised machine whose stated maximum fabric thickness covers your thickest seam, with a denim needle. Denim commonly runs about 340–475 GSM (illustrative), so verify the spec sheet of the cloth and test a scrap of the stacked seam first.
Comparing before you buy? Choose the fabric first, then match the machine to it. Compare the weight, fibre and construction of the cloth you plan to sew across the knit and woven fabric entries on Dexitex. The spec of the fabric decides how much the machine has to do, so answer that question before you buy.