Chains & crosses · Beginner

Double Irish Chain, Block B quilt block

A background block with a small square in each corner. The corner squares match the outer chain fabric of block A and link its chains.

Double Irish Chain, Block B: main and background. A 5 × 5 grid.

Cutting chart by block size

Fabric	Cut	Size	Then
Main	4 squares	1 1/2" × 1 1/2"	–
Background	1 rectangle	5 1/2" × 3 1/2"	–
Background	2 rectangles	3 1/2" × 1 1/2"	–

Fabric	Cut	Size	Then
Main	4 squares	2" × 2"	–
Background	1 rectangle	8" × 5"	–
Background	2 rectangles	5" × 2"	–

Fabric	Cut	Size	Then
Main	4 squares	2 1/2" × 2 1/2"	–
Background	1 rectangle	10 1/2" × 6 1/2"	–
Background	2 rectangles	6 1/2" × 2 1/2"	–

Fabric	Cut	Size	Then
Main	4 squares	3 1/2" × 3 1/2"	–
Background	1 rectangle	15 1/2" × 9 1/2"	–
Background	2 rectangles	9 1/2" × 3 1/2"	–

Cut the pieces in the chart above. All measurements include a 1/4" seam allowance.
Lay all the pieces out as in the diagram. The block is a 5 × 5 grid, and each cell finishes at 3". Sew neighbouring pieces into sections, then the sections into rows, pressing seams in opposite directions from row to row.
Join the rows. The block should measure 15 1/2" now and 15" once it is sewn into the quilt.

Yardage for a Double Irish Chain, Block B quilt (15" blocks)

Quilt size	Blocks	Finished size	Main	Background	Border & binding	Backing
Baby	2 × 3 (6)	36" × 51"	1/4 yd	1 1/4 yd	1 yd	3 1/2 yd
Lap	3 × 4 (12)	51" × 66"	1/2 yd	2 1/2 yd	1 1/8 yd	4 1/4 yd
Throw	4 × 4 (16)	66" × 66"	3/4 yd	3 1/4 yd	1 3/8 yd	4 1/4 yd
Twin	4 × 6 (24)	66" × 96"	7/8 yd	4 7/8 yd	1 1/2 yd	6 yd
Queen	6 × 6 (36)	96" × 96"	1 3/8 yd	7 1/4 yd	1 7/8 yd	8 3/4 yd
King	7 × 7 (49)	111" × 111"	1 7/8 yd	10 yd	2 1/8 yd	10 yd

Blocks side by side with a 3" border, 2 1/2" binding, 42" usable width and 10% extra.

A throw quilt of 15" Double Irish Chain, Block B blocks in each setting.

Setting	Blocks	Finished size	Extra fabric
Side by side	16	66" × 66"	–
With sashing	12	55" × 72"	Sashing 3/4 yd, Cornerstones 1/8 yd
Alternating plain blocks	8 pieced + 8 plain	66" × 66"	Plain blocks 2 yd
On point	13	69 3/4" × 69 3/4"	Setting triangles 1 3/4 yd

1. Your fabrics (tap a fabric, then choose a sample or your own photo)

2. Block

3. Quilt size

4. Block size

5. Setting

Border

Fabric	Yardage	Cut

Based on 42" usable fabric width, 1/4" seams and 10% extra. Your photos stay on your device.

How many fabrics does a Double Irish Chain, Block B block need?

Two: main and background. Choose a main fabric that contrasts clearly with the background so the design reads from a distance.

What size pieces do I cut for a 15 inch Double Irish Chain, Block B?

4 main squares at 3 1/2" × 3 1/2"; 1 background rectangle at 15 1/2" × 9 1/2"; 2 background rectangles at 9 1/2" × 3 1/2".

How many Double Irish Chain, Block B blocks for a lap quilt?

12 blocks at 15", set 3 by 4 with a 3" border, make a 51" × 66" quilt.

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