How To Use the Creative Grids 4", 6", and 8" Log Cabin Trim Tools

Creative Grids® Log Cabin Trim Tools make one of quilting’s most classic blocks easier, more accurate, and more beginner-friendly than ever. Available in 4″, 6″, and 8″ finished block sizes, these tools allow you to create traditional log cabin blocks, half log cabin blocks, and courthouse steps with consistent results.

This tutorial walks through the process of making a traditional log cabin block using the 8″ Log Cabin Trim Tool, with notes that apply equally to the 4″ and 6″ versions.

What the Log Cabin Trim Tools Can Make

Each Log Cabin Trim Tool includes instructions for three block styles:

• Traditional Log Cabin
• Half Log Cabin
• Courthouse Steps

All three styles are included with each size tool, making it easy to experiment with variations once you understand the core process.

For this tutorial, the focus is on the traditional log cabin block.

Recommended Resource: Sewing & Trimming Sequence

While the trim tools include instructions, Creative Grids® also provides a free Sewing & Trimming Sequence PDF for each size (4″, 6″, and 8″).

This resource:

• Specifies exact fabric cutting sizes
• Improves accuracy and alignment
• Reduces fabric waste
• Creates a cleaner finished block with no excess fabric inside seams

Using this sequence is strongly recommended, especially if you prefer precision over improvisational strip cutting.

Cutting Instructions (8″ Log Cabin Block)

Center Square

• Cut one 2.5″ square (this is the center of the block)

Round 1 Fabric Cuts

Follow the Sewing & Trimming Sequence for exact sizes. For the 8″ block:

• First light: 1.75″ × 2.5″
• Second light: 1.75″ × 3.75″
• First dark: 1.75″ × 3.25″
• Second dark: cut per sequence chart

If using scraps, labeling pieces by round and light/dark value helps prevent confusion later.

Sewing Notes Before You Begin

• Use a scant .25″ seam allowance
  This is important for proper framing when trimming. A seam guide or seam guide setter can help maintain consistency.
• Press seams to the outside after each addition.
• Don’t worry if edges don’t align perfectly while sewing — the block is intentionally oversized and will be trimmed after each round.

Round 1: Building the Center

1. Sew the first light strip to the center square, right sides together.
2. Press to the outside.
3. Add the second light strip, aligning and sewing carefully.
4. Press to the outside.
5. Add the first dark strip, sewing from the side that allows the seam to “travel” smoothly to avoid rolling.
6. Press to the outside.
7. Add the second dark strip to complete Round 1.
8. Press to the outside.

Trimming After Round 1

1. Orient the block so the center square and smallest rectangle are at the top (north).
2. Place the Log Cabin Trim Tool over the block, aligning the framing lines around the center square.
3. Trim the exposed sides as indicated on the tool.
4. Rotate the block 180° (or rotate your mat).
5. Re-align and trim again.

After trimming, the block will be perfectly squared for the next round.

Round 2: Repeat the Process

1. Confirm orientation: center square and smallest rectangle remain at the top.
2. Add:
• First light
• Second light
• First dark
• Second dark
3. Press to the outside after each seam.
4. Use the trim tool’s Round 2 markings to trim:
• Align the tool
• Trim
• Rotate 180°
• Trim again

The block will once again be squared and ready for the next round.

Round 3 and Beyond

From this point forward, the process becomes rhythmic:

• Add fabrics in the correct light/dark sequence
• Press to the outside
• Use the trim tool’s round markings
• Trim fully around the block

For later rounds, a rotating cutting mat is especially helpful, allowing you to trim the entire block without lifting or repositioning fabric.

Why the Sewing & Trimming Sequence Matters

While it’s possible to cut strips “at least” a certain size, the Sewing & Trimming Sequence offers clear advantages:

• Cleaner seam alignment
• No excess fabric trapped inside the block
• More consistent visual balance
• Less fabric waste overall

The finished blocks may look similar from the front, but precision cutting creates a noticeably cleaner result when pressed and quilted.

A Beginner-Friendly Way to Make Perfect Log Cabins

These trim tools remove much of the frustration traditionally associated with log cabin blocks. Because each round is trimmed square, accuracy is built into the process.

• Beginners can achieve success on their very first block
• Experienced quilters can relax and enjoy the process
• Scraps can be used efficiently without sacrificing precision

Whether you prefer 4″, 6″, or 8″ blocks, the construction method remains the same — only the scale changes.