---
title: 'Uma undies: Sewing Instructions'
sidebar_label: Sewing Instructions
sidebar_position: 20
---
## Step 1: Pin/baste the front to the first gusset piece
Place one of the gusset pieces on the front piece, _good sides together_, so
that the crotch seams are aligned. Pin or baste at the seam allowance.
## Step 2: Open flat
Open flat. You can press if you want to, but who presses underwear?
## Step 3: Pin/baste the back to the first gusset piece
Place the back piece on the gusset, good sides together. Pin or baste at the
seam allowance.
## Step 4: Open flat
Open flat.
## Step 5: Attach the second gusset piece
Get the front and back pieces out of the way by rolling them to the center.
Place the second gusset piece good sides together on top so that it lines up
with the first gusset piece. The rolled-up front and back pieces should be
sandwiched between your gusset pieces.
Sew the front and back gusset seams at your seam allowance using a serger or a
zigzag stitch.
## Step 6: Turn right side out
Turn the undies right side out. All gusset seams should be enclosed.
## Step 7: Sew the side seams
Pin the side seams good sides together. Sew the side seams at your seam
allowance using a serger or a zigzag stitch.
:::note
Good work! Technically you could leave the edges raw since knit fabrics do not
fray, but to help your undies stay up, you should probably add elastic to the
legs and waist. Keep going.
:::
## Step 8: Prepare elastic
Overlap the edges of each piece of elastic by your seam allowance and stitch
together. You should have three elastic pieces: one for the waistband and two
for the legs.
To ensure that you stretch the elastic evenly, divide the elastic into four
quarters and mark the points with pins or chalk. Do the same to the waist and
leg openings, marking the quarter points.
## Step 9: Sew elastic to the outside of the garment
Pin the elastic to the waist and leg openings on the good side of the fabric,
ensuring that you line up the quarter markings. If your elastic has a
decorative edge, make sure that you line up the plain edge (not the decorative
edge) of the elastic to the edge of the fabric. The decorative edge should be
pointing towards the garment, not away from it.
Sew the elastic to the garment using a zigzag stitch. You will have to stretch
the elastic slightly as you sew to make it lay flat against the fabric. Avoid
stretching the fabric itself.
Trim away any excess fabric that causes bulk or sticks out from the elastic.
## Step 10: Fold the elastic in and sew it down again
Fold the elastic and fabric to the inside, enclosing the raw edge of the fabric
under the elastic. You should be looking at the outside of the undies, a folded
edge with a bit of the elastic peeking out. Sew using a zigzag stitch.
Repeat these steps for each of the waist and leg openings.
You did it!
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