The sample and adjustments before production

What you take from this lesson: Catch in one garment what you would otherwise discover in a hundred.

One garment is cheaper than a hundred

The sample is the only real defense against a sewing pattern error. It costs one garment: a short length of fabric and a little sewing time. What it prevents is discovering the problem with the entire production run already cut, when there is no turning back.

And it has to be made in the actual fabric. A sample in a "similar" fabric is no good for evaluating fit, because fabric weight and stretch change how the garment hangs.

What to check with the garment on

• The shoulder: the seam has to land on the shoulder bone, neither inside it nor hanging off it.
• The armhole: raise the arm. If it pulls or the whole garment rides up, the armhole is too high or too narrow.
• The neckline: it has to sit flat without gaping or choking. If it opens up, the neckline is too wide or the neckband came out too long.
• The length: of the body and of the sleeve, with the arms in a normal position.
• The drape: the garment should not twist to one side or hang crooked.
• The waist: it should sit where it was designed to and not ride up when you move.

How to turn an adjustment into a pattern change

Each problem seen in the sample has a specific correction in the pattern:

• Dropped shoulder: shorten the shoulder width on the front and back equally.
• Armhole that pulls when you raise your arm: lower the armhole and adjust the sleeve cap by the same amount.
• Neckline that gapes: shorten the neckband, not the neckline.
• Garment that twists to one side: almost always the grainline was laid down wrong, so it is not a pattern problem.

After the adjustment, another sample

If the adjustment was big, sew a second sample. If it was one centimeter of length, you can go on without repeating it.

The rule of thumb: if the change touches an area where two pieces join — armhole, neckline, shoulder — it is worth repeating. If it only touches a length or a hem, it is not.

Once the sample is approved, photograph it and keep it together with the pattern: it is the reference you will compare the production against, and also the physical reference you hand to the sewing workshop.

Common mistakes

• Sewing the sample in a fabric different from the production fabric.
• Approving the sample without trying it on someone.
• Fixing the production instead of fixing the pattern: the same error comes back in the next run.

In short

A sample in the actual fabric, tried on, checking the shoulder, armhole, neckline, length and drape. Every problem is fixed in the pattern, not in the production.