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How to design and baste a simple quilt using strip-piecing techniques

Strip-piecing speeds quilt making by sewing long fabric strips together and cutting them into repeated units. This guide walks you through designing a simple lap-size quilt, sewing strip sets, cutting and arranging blocks, and basting for quilting. Expect to spend about 6–10 hours total, including cutting, piecing, and basting, depending on speed.

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  1. Step 1: Choose quilt size and layout

    Decide on a finished size such as lap (50" x 65"), baby (36" x 45"), or throw (60" x 72"). Plan a grid based on block size — for a 50" x 65" lap using 10" finished blocks, cut 5 across by 6.5 down, so adjust to 5 x 7 blocks and trim to fit. Choosing size first fixes how many strips and yardage you need.

    [Illustration: diagram of quilt dimensions and grid with block counts and arrows showing measurements]

  2. Step 2: Select fabrics and calculate yardage

    Pick 3–6 fabrics: one background, two to four prints for strips. For 10" finished blocks, cut strips 2.5" wide (for a 4-strip unit) and allow 1/4" seams. For a 5 x 7 layout with 4 strips per block, you’ll need about 1.5–2.5 yards total of assorted fabrics and 3–4 yards for background plus 4 yards backing and 1.5 yards batting for a lap. Calculating first prevents costly shortages.

    [Illustration: pile of fabric bolts labeled with yardage numbers and color palette swatches]

  3. Step 3: Cut strips accurately

    Use a rotary cutter, 24" ruler, and cutting mat to cut strips the planned width (e.g., 2.5"). Cut several strips from each fabric: for 5 x 7 blocks with 4 strips per block you’ll need 5 x 7 x 4 = 140 strip pieces; cutting long continuous strips reduces joins. Accurate cutting reduces waste and ensures seams line up.

    [Illustration: hands cutting multiple fabric strips on a cutting mat with a rotary cutter and ruler]

  4. Step 4: Sew strip sets with consistent seam allowance

    Chain-piece strips by stacking and sewing edges with a 1/4" seam allowance; press seams open or to one side depending on thickness. Sew strips in the planned order into strip sets until each set reaches the length of your block (about 10.5" if making 10" finished blocks including seam allowances). Chain-piecing saves time and keeps tension consistent.

    [Illustration: sewing machine stitching long strip sets with ruler showing 1/4-inch seam allowance]

  5. Step 5: Cut strip sets into blocks

    Use a square ruler to subcut strip sets into block units the correct size including seam allowances (for 10" finished block cut 10.5"). Keep orientation in mind so patterns read consistently. Cutting all sets at once produces uniform blocks and speeds layout.

    [Illustration: strip set being cut into uniform square blocks on a cutting mat with a large square ruler]

  6. Step 6: Arrange and sew blocks into rows

    Lay out blocks on a flat surface or design wall in the planned order, stepping back to check color balance. Sew blocks into rows using 1/4" seam, then join rows to make the quilt top. Press seams in alternate directions between rows to help nests meet and reduce bulk; this improves alignment and smoothness.

    [Illustration: quilt top partially assembled on a design wall with rows being sewn together]

  7. Step 7: Baste the quilt for quilting

    Make a sandwich: backing right side down, batting centered, quilt top right side up. Use spray adhesive, safety pins (every 4–6 inches), or large basting pins to hold layers smooth; for a 50" x 65" quilt, 50–80 pins or 12–20 safety pins are typical. Smooth from center outward to remove wrinkles, and trim backing and batting even with the top before quilting.

    [Illustration: three-layer quilt sandwich laid flat with pins being inserted from center outward]


  • Prewash and press fabrics to reduce shrinkage and color bleed; cotton shrinks about 3–5% on first wash.
  • Label strip sets and keep them in order with clips to avoid reordering mistakes.
  • Chain-piece continuously and clip threads later to save time; keep a seam guide on your machine for a true 1/4" seam.
  • Press seams with a hot iron and starch small amounts to keep blocks flat; avoid over-pressing hard seams to prevent distortion.
  • Make a few extra blocks (5–10%) to allow for trimming or mistakes.
  • If new to basting, practice with a smaller sample sandwich about 20" square to get comfortable with smoothing and pin spacing.

  • Always keep pins pointing away from your hands when smoothing layers to avoid injury.
  • Use caution with spray baste in a well-ventilated area and follow manufacturer instructions to avoid inhalation or sticky buildup.
  • Don’t skip measuring seam allowance — a wrong 1/8" can cause significant mismatch over multiple blocks.
  • Avoid stretching fabric while sewing or basting; stretching distorts block size and makes rows not line up.

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