Carpenter's Star Quilt - Mycrafts.site

Queen Size Carpenter’s Star Quilt (approx. 88 x 100 inches / 223 x 254 cm).

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Unlike a rag quilt, a traditional quilt uses a 1/4-inch seam allowance, pieced top blocks, inner/outer borders, separate batting, and backing fabric.

Quilt Anatomy & Dimensions

Center Star Block: 60 x 60 inches (A 6×6 grid of 10-inch finished blocks)
- Solid Squares: Background (White) and Star Accents (Dark Navy / Medium Blue)
- Half-Square Triangles (HSTs): Two-color HST combinations generating the star points
Inner Border (Solid Navy): 2 inches wide
Pieced Piano Key / Braided Border: 6 inches wide
Outer Border & Binding (Dark Navy & Light Blue): 4 inches wide

Fabric Requirements (Assuming 42″ Printable Fabric Width)

Fabric Role / Color	Design Function	Total Yardage Needed
Background (White/Off-White)	Star background & border spacers	3.5 yards
Dark Blue (Navy)	Star points, inner border, outer border & binding	4.5 yards
Medium Blue (Patterned/Floral)	Star body accents & pieced border keys	2.5 yards
Light Blue (Patterned/Tone-on-Tone)	Star body accents, piano keys & outer edge trim	2 yards
Quilt Backing	Full single-sheet or pieced backing	8 yards (or 2.75 yards of 108″ wide fabric)
Batting	Queen size (at least 95 x 108 inches)	1 Queen Batting Roll

Cutting Instructions for the Central Star (60″ x 60″)

To build the 6×6 grid (36 total 10.5″ unfinished squares):

Solid Background Squares: Cut (10) 10.5″ x 10.5″ squares from White.
Solid Star Center Squares: Cut (2) 10.5″ x 10.5″ squares from Dark Navy, (2) from Medium Blue, and (2) from Light Blue.
Half-Square Triangles (HSTs): Cut (10) 11.5″ x 11.5″ squares of Background and matching 11.5″ squares of blues to pair up, draw diagonal lines, sew 1/4″ on both sides, cut down the center, and trim down to 10.5″ x 10.5″.

Key Assembly Tips

Square Up Your HSTs: The precision of the Carpenter’s Star relies entirely on sharp 45-degree points. Always trim your Half-Square Triangles precisely to 10.5″ before joining them.
Press Seams Open or Nesting: Press seams toward the darker fabrics, or press them open to reduce bulk where multiple diagonal star points meet at the center intersections.
Borders First, Braids Second: Assemble the central star top completely, attach the solid inner navy border, and then build the top/bottom piano key strips and left/right chevron border strips separately before sewing them onto the center panel.

Project Overview

Skill Level: Intermediate
Finished Size: Queen Size (approx. 88″ x 100″ / 223 cm x 254 cm)
Block Units: 10″ Finished Half-Square Triangles (HSTs) and Solid Squares
Grid Layout: 6×6 Center Grid (36 blocks total) + Borders

Fabric Requirements (42″ Width)

Fabric	Color / Pattern	Function	Total Yardage
Fabric A	White / Off-White Solid	Star Background & Border Spacers	3.5 Yards
Fabric B	Dark Navy Blue	Outer Star Points, Inner Border, Outer Border & Binding	4.5 Yards
Fabric C	Medium Blue Floral/Print	Middle Star Ring & Chevron/Piano Key Borders	2.5 Yards
Fabric D	Light Blue Print/Tone-on-Tone	Inner Star Accents & Border Keys	2 Yards
Backing	Choice Fabric	Quilt Backing	8 Yards (or 2.75 yards of 108″ wide)
Batting	100% Cotton or Blend	Mid-layer Insulation	1 Queen Roll (min. 95″ x 108″)

Step 1: Cutting the Central Star Grid

All central units are cut to 10.5″ x 10.5″ to finish at 10″ x 10″ in the quilt.

1. Solid Squares (10.5″ x 10.5″)

Fabric A (White): Cut (10) 10.5″ squares (Corners and side background blocks)
Fabric B (Navy): Cut (2) 10.5″ squares
Fabric C (Medium Blue): Cut (2) 10.5″ squares
Fabric D (Light Blue): Cut (2) 10.5″ squares

2. Half-Square Triangles (HSTs)

To make HSTs using the 2-at-a-time method, cut oversized 11.5″ x 11.5″ squares, pair them, and trim down to 10.5″ x 10.5″:

A + B Pairs: Cut (5) 11.5″ squares of Fabric A and (5) of Fabric B $\rightarrow$ Yields 10 HSTs
A + C Pairs: Cut (3) 11.5″ squares of Fabric A and (3) of Fabric C $\rightarrow$ Yields 6 HSTs
B + C Pairs: Cut (1) 11.5″ square of Fabric B and (1) of Fabric C $\rightarrow$ Yields 2 HSTs
B + D Pairs: Cut (1) 11.5″ square of Fabric B and (1) of Fabric D $\rightarrow$ Yields 2 HSTs

Step 2: Sewing the Central Star (6×6 Grid)

Make the HSTs:
- Place two 11.5″ contrasting squares right sides together.
- Draw a diagonal line from corner to corner.
- Sew 1/4 inch away from the drawn line on both sides.
- Cut along the center drawn line to yield 2 HSTs.
- Press seams toward the darker fabric and trim/square up precisely to 10.5″ x 10.5″.
Assemble the Grid:
- Lay out the 36 blocks into 6 rows of 6 blocks according to the Carpenter’s Star pattern (4 white corners, diamond star center, radiating outer points).
- Sew blocks into 6 horizontal rows using a standard 1/4-inch seam allowance.
- Nest row seams alternately (Row 1 left, Row 2 right) and join the 6 rows together.
- Finished Center Unit: 60.5″ x 60.5″ (Unfinished).

Step 3: Assembling the Custom Borders

1. Inner Border (Fabric B – Dark Navy)

Cut (4) strips at 2.5″ x width of fabric (WOF).
Attach left and right side borders first (60.5″), then top and bottom borders (64.5″).

2. Pieced Border (Chevron Sides + Piano Keys Top/Bottom)

Sides (Chevron/Braided): Piece 2.5″ x 6.5″ rectangles of Fabric B, C, and D at 45-degree angles to form vertical chevron strips. Sew to the left and right sides.
Top & Bottom (Piano Keys): Piece alternating 2.5″ x 6.5″ strips of Fabric A, B, C, and D horizontally. Sew to top and bottom.

3. Outer Border (Fabric B – Dark Navy)

Cut (8) 4.5″ x WOF strips of Fabric B.
Piece together and attach around all four outer edges to frame the quilt.

Step 4: Quilting & Finishing

Basting: Layer the backing fabric (wrong side up), batting, and finished quilt top (right side up). Pin or spray baste securely.
Quilting: Perform custom longarm or machine quilting (the example photo uses a swirling edge-to-edge floral/feather pantograph).
Binding: Cut (10) 2.5″ x WOF binding strips from Fabric B (or Fabric D for contrast accent). Join with diagonal seams, fold in half lengthwise, press, and sew to the outer perimeter.

Here is the exact Block-by-Block Diagram Layout for the 36 central squares (6×6 Grid) of the Carpenter’s Star.

Fabric Letter Key

A: Background (White / Off-White)
B: Dark Navy Blue
C: Medium Blue Floral / Print
D: Light Blue Print / Accent
Slash (/): Indicates a Half-Square Triangle (HST). The first letter is the top-left triangle, and the second letter is the bottom-right triangle.

The 6×6 Grid Block Map

Row 1: [ A ] [ A ] [ A/B ] [ B/A ] [ A ] [ A ]

Row 2: [ A ] [ A/B ] [ C/B ] [ B/C ] [ B/A ] [ A ]

Row 3: [ B/A ] [ C/B ] [ D ] [ C ] [ B/C ] [ A/B ]

Row 4: [ A/B ] [ B/C ] [ C ] [ D ] [ C/B ] [ B/A ]

Row 5: [ A ] [ B/A ] [ B/C ] [ C/B ] [ A/B ] [ A ]

Row 6: [ A ] [ A ] [ B/A ] [ A/B ] [ A ] [ A ]

HST Orientation & Pressing Checklist

Diagonal Alignment:
- The HSTs in Rows 1 & 2 slant diagonally inward toward the center.
- The HSTs in Rows 5 & 6 slant diagonally outward, completing the diamond points.
Center Diamond Focus:
- Notice how the 4 center squares (Row 3, Cols 3-4 and Row 4, Cols 3-4) consist of two solid [ D ] (Light Blue) and two solid [ C ] (Medium Blue) squares to form the inner focal diamond.
Pressing Direction Strategy:
- Odd Rows (1, 3, 5): Press all seam allowances to the Left.
- Even Rows (2, 4, 6): Press all seam allowances to the Right.
- This ensures every intersection nests automatically when you join the horizontal rows together.