Lesson 1
He is like a man which built an house, and digged deep, and laid the foundation on a rock: and when the flood arose, the stream beat vehemently upon that house, and could not shake it: for it was founded upon a rock.
Luke 6:48
Reading a Neckline: Where the Grain Turns to Bias
A neckline gives more trouble than any other edge on a garment, and the reason has nothing to do with your machine. It is a matter of grain. Before you stitch a single neckline you need to be able to look at a cut bodice piece and see where that edge is strong and where it is about to betray you.
One cut edge, three different fabrics
Lay a shirt front on the table, cut with the center front on the lengthwise grain. At center front, the neckline edge runs across the crosswise threads — reasonably stable, with only the small give that any crosswise cut has. Follow the curve up toward the shoulder and the edge swings until, somewhere along the way, it crosses the true bias: 45 degrees to both the lengthwise and crosswise threads. There the woven cloth behaves like a mild knit. It will lengthen under its own weight if you let the piece hang off the table edge while you go answer the door.
Keep following the curve and the edge approaches the lengthwise grain near the shoulder seam, where it is firm again. So a single continuous cut runs through stable, elastic, and stable once more. That is the whole difficulty in one sentence. If the bias section grows a half inch while you handle the piece, the neckline no longer matches the facing, band, or collar that was cut to fit it, and nothing you do at the machine will make the extra length disappear.
Why fronts gape and backs seldom do
Almost every pattern scoops the front neckline deeper than the back, because a body is deeper from the shoulder to the hollow of the throat than it is to the nape. A deeper scoop means a longer run of bias-cut edge and a more sharply curved one. That is why a gaping neckline is nearly always a front neckline, and why the front is the piece you must handle most carefully between the cutting table and the machine.
The back neckline is shallow and close to crosswise grain for most of its length. It stretches less, but it is also the edge that must sit smooth against the nape where it is most visible to everyone but the wearer.
The vocabulary of the edge
Work from the seamline, not the cut edge. On most commercial patterns the neckline is drafted with a 5/8 inch seam allowance, so the seamline lies 5/8 inch in from what your scissors cut. Every measurement, every stay stitch, every match point is referenced to that line.
Notches are your alignment marks: on many commercial patterns a single notch marks the front and a double notch the back, which keeps you from setting a collar or facing on backwards. Transfer the shoulder dots and center front mark before you unpin the pattern, because once the tissue is off, one smooth curve looks much like another.
Handling the piece before you sew
Support the whole bodice piece. Carry it flat, in both hands or over a rolled towel, and never let the neckline hang from the table. Do not pick a piece up by its neckline. When you press before assembly, lift and lower the iron rather than sliding it along the curve; sliding drags the bias out of shape as surely as pulling does.
Then check your work. Set a tape measure on edge and walk it along the neckline seamline of the cut piece, and compare that number to the same seamline walked on the paper pattern. Within about an eighth of an inch, you are fine. A half inch of growth means the piece stretched during cutting or handling, and you should steam it gently, coax it back with your fingers, and let it cool flat before going on.
The work under the work
The Lord Jesus described a man who dug deep and laid a foundation on rock, so that when the flood beat against the house it could not be shaken. Nobody admired the digging. Nobody could see it once the house stood. The storm proved it anyway. Grain sense is the digging of garment sewing. No one who sees your finished collar will know you carried the piece flat and measured the seamline twice, but the neckline that still lies smooth after two years of washing was founded on that care.
Check yourself
Where along a front neckline cut on lengthwise grain does the edge cross the true bias?
- At the center front
- Roughly partway between center front and shoulder
- Only at the shoulder seam
- Bias never occurs on a neckline
Answer
B. Roughly partway between center front and shoulder
True bias runs at what angle to the lengthwise and crosswise threads?
- 30 degrees
- 60 degrees
- 45 degrees
- 90 degrees
Answer
C. 45 degrees
Why is a gaping neckline almost always a front neckline?
- Fronts are cut on crosswise grain
- Front pieces are cut larger on purpose
- Thread tension differs on front seams
- The front scoop is deeper, so more of the edge is bias
Answer
D. The front scoop is deeper, so more of the edge is bias
What seam allowance do most commercial patterns draft at the neckline?
- 1/4 inch
- 3/8 inch
- 1/2 inch
- 5/8 inch
Answer
D. 5/8 inch
On many commercial patterns, a double notch usually marks which piece?
- The back
- The front
- The facing
- The interfacing
Answer
A. The back
How should you press a cut bodice piece before assembly?
- Lift and lower the iron rather than sliding
- Slide the iron along the curve
- Press only from the wrong side with no steam
- Stretch the edge while pressing
Answer
A. Lift and lower the iron rather than sliding
How much growth in the neckline seamline is acceptable when you compare the cut piece to the pattern?
- Up to a full inch
- Any amount, since sewing corrects it
- Exactly zero, or the piece is ruined
- About an eighth of an inch
Answer
D. About an eighth of an inch
Why should you never pick a bodice up by its neckline?
- It dulls the shears
- The bias section will lengthen under the weight
- It wrinkles the hem
- It pulls the notches out of the fabric
Answer
B. The bias section will lengthen under the weight
The back neckline is comparatively stable because most of its length lies near which grain?
- True bias
- Lengthwise grain
- Crosswise grain
- Off grain
Answer
C. Crosswise grain
How does Luke 6:48 apply to neckline work?
- It teaches that decorated collars are vain
- It warns against sewing during storms
- It shows that unseen foundation work is what holds up under strain
- It commands that garments be made of linen
Answer
C. It shows that unseen foundation work is what holds up under strain