Lesson 1
Who coverest thyself with light as with a garment: who stretchest out the heavens like a curtain:
Psalm 104:2
Straightening the Grain Before the Pattern Goes Down
Yardage comes off the bolt pulled, rolled, and creased. Before a single pattern piece touches it, the cloth has to be opened out and brought back to square. Everything downstream depends on it. A bodice cut on a skewed layer will twist on the body no matter how carefully you sew the seams, and no amount of pressing later will talk it out of the twist.
What the grain actually is
A woven fabric is two sets of yarns crossing at right angles. The lengthwise grain runs parallel to the selvage, the finished edge the loom leaves down both sides. That direction has the least give, carries the most strength, and is the direction most garment pieces are cut along, which is why a skirt hangs instead of sagging. The crosswise grain runs from selvage to selvage, over and under the lengthwise yarns, and has noticeably more stretch. Pull a scrap gently in both directions and you will feel it in a second.
Bias is the 45-degree diagonal across both sets of yarns. It has the most give of all and it drapes in soft curves rather than folds. Bias is a tool, not an accident, and cutting a piece on the bias by mistake is one of the fastest ways to get a hem that dips.
Squaring the cut end
The store's cut end is almost never square. To find the true crosswise line, clip through the selvage about half an inch, catch one crosswise yarn with a pin, and draw it gently while easing the fabric along the pulled thread. The yarn either slides free or breaks; when it breaks, find the end again and keep going. It leaves a visible channel across the cloth, and cutting along that channel gives you a genuinely square end. On a firm, plain-weave cotton or linen you can often simply snip the selvage and tear across instead — fast, accurate, and it makes a startling noise. Test-tear a few inches on a scrap first, because some fabrics distort along the tear.
Bringing the layers into agreement
Fold the fabric selvage to selvage on a table long enough to hold most of it, and look at what the crosswise ends do. If the cut ends line up and the selvages stack without strain, the piece is on grain. If the ends form a diagonal, the fabric was rolled off-grain and needs coaxing: take opposite corners, one at each end of the short diagonal, and pull steadily on the bias. Work down the length in sections. Then press the fabric with a damp press cloth, moving the iron along the grain rather than in circles.
Some fabrics will not come true, and it is important to know that before you cut. Permanent-press finishes and heat-set prints can lock a skew in place. If the crosswise line and the selvage are stubbornly not at right angles, cut single-layer and follow the woven grain rather than the printed stripe, or set the piece aside for something forgiving.
Spreading out the cloth
Work on a hard, flat surface — a table, a cutting board, a sheet of plywood on the bed. Fabric that hangs off the edge drags itself out of position under its own weight, and by the time you notice, the lower pieces have crept. Smooth the layer with your open hand from the fold outward, never pulling. Fold-line creases from the bolt should be pressed out first; a crease that will not release, especially the white line down the center of a long-shelved cotton, marks a weakened place, and pieces should be planned around it.
The psalmist pictures God stretching out the heavens like a curtain — a spread of cloth pulled true and hung straight. There is something quietly fitting in beginning a garment the same way: the cloth laid out flat and honest, squared to itself, before anything is asked of it. Care at this stage is not fussiness. It is the difference between a garment that hangs and one that fights the wearer all day.
Check yourself
Which direction runs parallel to the selvage and has the least stretch?
- Crosswise grain
- Lengthwise grain
- True bias
- Nap direction
Answer
B. Lengthwise grain
The selvage is:
- The finished edge the loom leaves down both sides
- The cut end made at the fabric store
- The center fold of the yardage
- The raw edge after preshrinking
Answer
A. The finished edge the loom leaves down both sides
True bias lies at what angle to the grain lines?
- 15 degrees
- 30 degrees
- 45 degrees
- 90 degrees
Answer
C. 45 degrees
To find a truly square crosswise end, the described method is to:
- Measure with a yardstick from the selvage
- Fold the fabric in half and trust the fold
- Cut along the printed stripe
- Clip the selvage, pull one crosswise yarn, and cut along the channel it leaves
Answer
D. Clip the selvage, pull one crosswise yarn, and cut along the channel it leaves
If the cut ends form a diagonal when the fabric is folded selvage to selvage, you should:
- Cut the pieces anyway and press afterward
- Pull on the bias at opposite corners, then press with a damp cloth
- Trim the selvages off
- Refold crosswise instead
Answer
B. Pull on the bias at opposite corners, then press with a damp cloth
Which grain direction has the most stretch of the two woven grains?
- Lengthwise
- They stretch equally
- Neither stretches at all
- Crosswise
Answer
D. Crosswise
Fabric hanging off the edge of the table is a problem because:
- It picks up lint from the floor
- It cools too fast after pressing
- Its own weight drags the layers out of position
- It cannot be pinned
Answer
C. Its own weight drags the layers out of position
A permanent-press finish or heat-set print may mean that:
- The fabric cannot be pressed at all
- The grain skew cannot be pulled back true
- The fabric has no lengthwise grain
- Bias cutting is impossible
Answer
B. The grain skew cannot be pulled back true
Psalm 104:2 pictures the heavens being stretched out like what?
- A curtain
- A tent peg
- A robe of scarlet
- A woven basket
Answer
A. A curtain
A bolt crease that will not press out should be treated as:
- Proof the fabric is off grain
- A helpful fold line for layout
- A weakened place to plan pieces around
- A sign the fabric needs starch
Answer
C. A weakened place to plan pieces around