The loom decides what can be repeated. A fabric's dobby figure has to fit inside the dobby mechanism's repeat capacity, not just look drawable.
Dobby Loom: How Small Geometric Figures Get Woven
A dobby loom uses a dobby mechanism to lift selected groups of warp ends on each pick, weaving small geometric figures directly into the cloth rather than printing them on.
A dobby loom weaves small geometric figures into the cloth. On each pick, a dobby mechanism lifts a selected group of warp ends, and the pattern that falls out of that lifting is the figure.
That single difference — figure woven rather than figure printed — is what separates dobby from every other way of getting a pattern onto fabric, and it is also why dobby survives washing differently.
What the mechanism actually does
| Loom | What it controls | Figure it can produce |
|---|---|---|
| Plain / waterjet | One end at a time on a fixed plan | No figure — a solid or striped ground |
| Dobby | A group of ends, repeating on a fixed pick count | Small geometric motifs: dots, diamonds, ribs, small repeats |
| Jacquard | Every end independently, one by one | Large, detailed, curving figures |
Dobby lifts a group. That is the whole constraint and the whole opportunity: within its repeat capacity a dobby is fast and economical, and beyond it the figure has to be a jacquard.
Electronic versus mechanical
- Mechanical dobby — patterns on punched cards or rolls that are physically exchanged. Fine for a long-running single article, awkward when programs change.
- Electronic dobby — the pattern is held in memory and changed from a control. Faster setup, trivial corrections, and the only sensible choice when a mill runs short greige programs across many articles.
Most modern waterjet mills run electronic, which is why a small dobby programme is no longer a special production job.
How the loom compares for a mill
Dobby weaving is a machine feature, not a separate mill. The same waterjet loom that runs plain weave and twill can carry the dobby equipment, and on a home-textile programme the figure, the yarn choice and the finish are frequently woven in one pass. So asking "do you run dobby?" is really asking whether the loom has the equipment — not whether the mill is capable.
What limits the figure
The ceiling is the repeat: how many ends and picks one pattern cycle occupies. Within it the figure is repeatable and cheap; past it, the pattern card grows until the design needs a jacquard.
This is worth settling before the artwork, not after, because a design drawn outside the mechanism is a design that cannot be woven.
Dobby or print
| Dobby (woven in) | Digital print (applied on) | |
|---|---|---|
| Where the figure sits | In the structure, both faces | On the surface, face only |
| Washing | Stays, because it is the cloth | Fades with the finish and wear |
| Reverse side | Carries the figure too | Plain or a blurred reverse |
| Minimum order | Usually a repeat-based mill minimum | Low, some routes from a few hundred metres |
| Cost driver | Pattern card and loom time | Ink and setup |
Both are legitimate. They answer different requirements: dobby for durability and a two-sided figure, print for long-tail designs and small runs.
Writing it on a purchase order
Name:
- Weave — dobby, and the figure's own name
- Repeat, expressed in ends and picks, not in centimetres
- Yarn, width and finish on the same line
- Colourway count, since a dobby programme runs warp and weft colours
"Make it dobby" is not a specification; "dobby diamond repeat, 24 ends × 24 picks, 150D polyester, 280 cm" is.
Read next: dobby weave for the construction and its fabric character, jacquard loom for the step up in figure complexity, waterjet loom for the loom class most home-textile mills run, and digital printing for the alternative route to the same visual result.
Common questions
What is a dobby loom?
- A loom that carries a dobby mechanism instead of a plain heddle pattern. On every pick the mechanism lifts a selected group of warp ends, typically 8, 12 or 16 ends at once, so small geometric figures come out of the weaving rather than being printed on afterwards.
How is a dobby loom different from a jacquard loom?
- By what it can lift. A dobby raises whole groups of warp ends within a fixed repeat — enough for small geometric motifs. A jacquard controls every single end independently, so it can build large, detailed, curving figures. Small repeat does not mean worse; it means different.
What is the difference between an electronic and a mechanical dobby?
- A mechanical dobby uses a punched card or roll pattern that is physically exchanged. An electronic dobby stores the pattern in memory and is changed from a control, which is faster, easier to correct and far more practical when you are running short greige programs across many articles.
Can you make a dobby figure bigger by repeating the warp?
- You can scale it by repeating, not by drawing an arbitrary larger figure. A dobby pattern repeats on a fixed number of picks, so a larger motif normally means a larger repeat, which means more ends in the pattern card — and there is a ceiling. Beyond it the figure needs a jacquard.
Does a waterjet loom run dobby weaving?
- Yes. Modern waterjet dobby looms carry dobby or jacquard equipment, and on a home-textile programme the weave figure, the yarn and the finish are often woven in one pass on the same machine. That is why a dobby construction does not imply a different mill from a plain one.
How do you write a dobby on a purchase order?
- Name the weave, the repeat in ends and picks, the yarn and the width. 'Dobby' alone does not specify the figure, and a repeat stated in centimetres rather than in ends will be interpreted differently by each mill.
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