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Chains & crosses · Beginner · 7 1/2" finished

7 1/2 inch Double Irish Chain, Block B quilt block

Cutting chart, piecing steps and yardage for a Double Irish Chain, Block B block that finishes at 7 1/2". The block is a 5 × 5 grid and each cell finishes at 1 1/2".

Finished block 7 1/2" × 7 1/2". Unfinished 8" × 8".

Cutting chart for one block

FabricCutSizeThen
Main4 squares2" × 2"–
Background1 rectangle8" × 5"–
Background2 rectangles5" × 2"–

How to piece it

  1. Cut the pieces in the chart above. All measurements include a 1/4" seam allowance.
  2. Lay all the pieces out as in the diagram. The block is a 5 × 5 grid, and each cell finishes at 1 1/2". Sew neighbouring pieces into sections, then the sections into rows, pressing seams in opposite directions from row to row.
  3. Join the rows. The block should measure 8" now and 7 1/2" once it is sewn into the quilt.

Yardage for a quilt of 7 1/2" Double Irish Chain, Block B blocks

Quilt sizeBlocksFinished sizeMainBackgroundBorder & bindingBacking
Baby4 × 6 (24)36" × 51"3/8 yd1 1/4 yd1 yd3 1/2 yd
Lap6 × 7 (42)51" × 58 1/2"1/2 yd2 1/8 yd1 1/8 yd3 3/4 yd
Throw7 × 9 (63)58 1/2" × 73 1/2"3/4 yd3 yd1 3/8 yd4 3/4 yd
Twin9 × 12 (108)73 1/2" × 96"1 3/8 yd5 1/8 yd1 3/4 yd6 yd
Queen12 × 12 (144)96" × 96"1 3/4 yd6 3/4 yd1 7/8 yd8 3/4 yd
King14 × 14 (196)111" × 111"2 3/8 yd9 1/8 yd2 1/8 yd10 yd

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

What a lap quilt looks like

6 × 7 blocks, 51" × 58 1/2" with border.

This diagram uses plain colors. To see the quilt in your own fabrics, with sashing or on point, use the tool below: tap a fabric and choose a photo.

5" Double Irish Chain, Block B10" Double Irish Chain, Block B15" Double Irish Chain, Block BAll Double Irish Chain, Block B sizes

See it in your own fabrics

1. Your fabrics (tap a fabric, then choose a sample or your own photo)
2. Block
3. Quilt size
4. Block size
5. Setting

What to buy

FabricYardageCut

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

Questions

What do I cut for a 7 1/2 inch Double Irish Chain, Block B block?

4 main squares at 2" × 2"; 1 background rectangle at 8" × 5"; 2 background rectangles at 5" × 2".

What size is the block before it is sewn into the quilt?

8" square. It finishes at 7 1/2" once the seams on all four sides are sewn.

How much fabric for a throw quilt of 7 1/2 inch Double Irish Chain, Block B blocks?

63 blocks make a 58 1/2" × 73 1/2" quilt. Buy 3/4 yd of main, 3 yd of background and 1 3/8 yd of border & binding, plus 4 3/4 yd for the backing.