How to Join Adjacent Tapestry Color Areas Without Leaving Gaps

A slit forms when neighboring wefts repeatedly turn back without connecting to one another. Packing the rows closer together does not supply that missing sideways connection. The Art Institute of Chicago distinguishes this structure from interlocking, where neighboring wefts loop together, and dovetailing, where they share a warp. Weaving Structures

First check whether you are seeing a continuous opening or a temporarily uncovered warp. Rebecca Mezoff explains that a warp appearing bare where two colors meet may be covered on the next pick. Complete the two-pick sequence before changing the yarn path. A pick is one pass through the warp; a sequence here means an outward and return pass. Four things a tapestry weaver needs to remember

Choose according to the boundary you want to weave and whether the neighboring areas are still accessible. The following decision aid applies the structural distinctions described by the Art Institute and Schacht’s interlock instructions. Weaving Structures, Explore Tapestry Weave-Along

Your situation	Method to sample	What connects the areas
You want to connect a vertical boundary while weaving	Weft interlock	Neighboring wefts loop around one another
You want both colors to turn around one boundary warp	Dovetail	Both colors share that warp
A vertical slit has already been woven	Sew the slit, or unweave to introduce joins	Stitching connects the existing edges; reweaving changes the structure
The boundary moves sideways rather than stacking vertically	Assess whether a continuous slit actually forms	Staggered meeting points may need no additional join

Sewing an existing slit is an established option. Mezoff describes sewing or interlocking long slits, while explaining that small, staggered openings can disappear into the fabric. Avoid choosing a universal slit-length limit: her explanation does not establish one for every yarn, sett, and project. Tapestry and legos: built like bricks

Schacht’s same-direction method connects the wefts every other row and produces a serrated color boundary. Work both areas across each row instead of completing one tall block first. Its teaching example uses an even number of warps per section. Explore Tapestry Weave-Along, lesson 3

For a two-color practice version, use green on the left and cream on the right:

1. In one shed—the opening between alternating warp threads—weave each color through its own area from right to left. Leave both working bundles at the left edges of their respective areas.
2. Change sheds and pack the row.
3. Weave green from left to right, bringing it out at the boundary.
4. Pass the cream bundle around the green working weft, then into the same shed through the cream area. The connection is weft around weft between the areas.
5. Leave enough weft for packing, change sheds, and beat.
6. Return both colors right to left within their areas. Repeat the interlock on the next left-to-right pass. Explore Tapestry Weave-Along

Pause after the first connection and trace both working yarns. Identify the loop before packing more rows over it. If you cannot find where cream passes around green, undo that pass and repeat it slowly.

Dovetailing uses a common warp rather than a weft-to-weft loop. Select one boundary warp as the turning point for both neighboring colors. Bring the left color to that warp and turn it back into its own area; bring the right color to the same warp and turn it back into its area. Their turns alternate around the shared warp as the weaving advances. Weaving Structures

On your sample, mark the chosen warp above the weaving so you can check each turn. Follow the existing over-under sequence and inspect the boundary after each completed sequence. The useful check is whether both colors actually turn around the marked warp. If each turns around a different neighboring warp, you have left two independent edges.

A connection still needs enough weft to travel over and under the warp. Mezoff explains that the required yarn length exceeds the straight distance across the weaving; thicker warps require a longer path. When warp threads begin gathering together or the weaving narrows, allow more weft. Four things a tapestry weaver needs to remember

Lay the weft with a small arc or bubble before packing it. Watch the boundary while you settle the loop: if tightening the connection moves the surrounding warps, back up and allow more yarn. Check the width at the join as well as at the outer edges. This applies Mezoff’s yarn-path explanation to the joining point.

Use this diagnostic order:

1. One apparently bare warp: finish the return pick before intervening.
2. A persistent vertical opening: trace the turns and check for a missing connection.
3. Warps gathering toward the join: loosen the latest pass and increase its available weft.
4. An unfamiliar boundary texture: compare the yarn path with your chosen method before changing techniques. Four things a tapestry weaver needs to remember

Small openings do not necessarily require a connection at every meeting point. Mezoff explains that staggered weft meeting points can disappear into the fabric, whereas repeatedly aligning them produces a slit. This makes the direction of the boundary relevant: examine where the turns accumulate rather than treating every color change alike. Tapestry and legos: built like bricks

For a curved shape, inspect its near-vertical portions separately from the parts moving sideways. Ask whether several turns are stacking in one place. Keep the planned outline as your reference; moving the boundary merely to conceal an opening also changes the shape. Where the outline requires a sustained vertical edge, sample a deliberate connection.

Make a comparison sampler using your intended warp and two contrasting wefts. The following dimensions are illustrative practice choices, not a required specification. Use 24 warp ends: divide them into two groups of 12 for the slit and interlock exercises. For the dovetail exercise, designate a central boundary warp that both colors will share.

Weave three short bands, bringing both colors to the same height before changing methods:

• Separate turns: weave two neighboring blocks without connecting their edges. This gives you a reference slit.
• Weft interlock: follow the same-direction sequence above. Stop after several connections and trace one loop.
• Dovetail: use the marked shared warp and check that both colors turn around it.

Record what you observe: the color line, any opening, the surface at the boundary, and whether the warp spacing changes. Compare the sample while weaving and again after removing it from the loom. These are observations to make yourself; no particular sample result is assumed.

Choose the join whose appearance suits your design and whose yarn path you can repeat consistently. Before continuing a vertical color boundary, check three things: both areas have reached the working row, the intended connection is present, and the surrounding warps remain evenly spaced.

• Art Institute of Chicago — Weaving Structures
• Jane Patrick, Schacht Spindle Company — Explore Tapestry Weave-Along
• Rebecca Mezoff — Four things a tapestry weaver needs to remember
• Rebecca Mezoff — Tapestry and legos: built like bricks