SeeMyQuilt
Classics · Confident beginner

Double Wrench quilt block

A Churn Dash drawn on a five-by-five grid: large corner triangles, narrow two-square side units and a small center square. Also called Double Monkey Wrench.

Double Wrench: main and background. A 5 × 5 grid.

Cutting chart by block size

5" Double Wrench (cut for one block)

FabricCutSizeThen
Main2 squares2 7/8" × 2 7/8"4 triangles (cut once on the diagonal)
Main4 squares1 1/2" × 1 1/2"–
Background2 squares2 7/8" × 2 7/8"4 triangles (cut once on the diagonal)
Background5 squares1 1/2" × 1 1/2"–

7 1/2" Double Wrench (cut for one block)

FabricCutSizeThen
Main2 squares3 7/8" × 3 7/8"4 triangles (cut once on the diagonal)
Main4 squares2" × 2"–
Background2 squares3 7/8" × 3 7/8"4 triangles (cut once on the diagonal)
Background5 squares2" × 2"–

10" Double Wrench (cut for one block)

FabricCutSizeThen
Main2 squares4 7/8" × 4 7/8"4 triangles (cut once on the diagonal)
Main4 squares2 1/2" × 2 1/2"–
Background2 squares4 7/8" × 4 7/8"4 triangles (cut once on the diagonal)
Background5 squares2 1/2" × 2 1/2"–

15" Double Wrench (cut for one block)

FabricCutSizeThen
Main2 squares6 7/8" × 6 7/8"4 triangles (cut once on the diagonal)
Main4 squares3 1/2" × 3 1/2"–
Background2 squares6 7/8" × 6 7/8"4 triangles (cut once on the diagonal)
Background5 squares3 1/2" × 3 1/2"–

How to make a 15" Double Wrench block

  1. Cut the pieces in the chart above. All measurements include a 1/4" seam allowance.
  2. Cut the squares marked "cut once" in half on the diagonal. Each gives two triangles. Sew them to their neighbours along the long edge first and press toward the darker fabric.
  3. 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.
  4. Join the rows. The block should measure 15 1/2" now and 15" once it is sewn into the quilt.

Yardage for a Double Wrench quilt (15" blocks)

Quilt sizeBlocksFinished sizeMainBackgroundBorder & bindingBacking
Baby2 × 3 (6)36" × 51"3/4 yd3/4 yd1 yd3 1/2 yd
Lap3 × 4 (12)51" × 66"1 3/8 yd1 3/8 yd1 1/8 yd4 1/4 yd
Throw4 × 4 (16)66" × 66"2 yd2 1/8 yd1 3/8 yd4 1/4 yd
Twin4 × 6 (24)66" × 96"2 5/8 yd2 3/4 yd1 1/2 yd6 yd
Queen6 × 6 (36)96" × 96"3 7/8 yd4 1/8 yd1 7/8 yd8 3/4 yd
King7 × 7 (49)111" × 111"5 1/2 yd5 7/8 yd2 1/8 yd10 yd

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

Four ways to set it

A throw quilt of 15" Double Wrench blocks in each setting.

SettingBlocksFinished sizeExtra fabric
Side by side1666" × 66"–
With sashing1255" × 72"Sashing 3/4 yd, Cornerstones 1/8 yd
Alternating plain blocks8 pieced + 8 plain66" × 66"Plain blocks 2 yd
On point1369 3/4" × 69 3/4"Setting triangles 1 3/4 yd

See Double Wrench 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

How many fabrics does a Double Wrench 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 Wrench?

2 main squares at 6 7/8" × 6 7/8"; 4 main squares at 3 1/2" × 3 1/2"; 2 background squares at 6 7/8" × 6 7/8"; 5 background squares at 3 1/2" × 3 1/2".

How many Double Wrench 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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