Setting quilt blocks on point with sashing is a dynamic way to add movement and sparkle to your quilt top. This technique transforms a traditional grid into a dynamic, secondary diamond grid that feels modern and energetic.
By combining neat sashing strips with on-point blocks, you control stretch, stabilize the design, and create crisp points that guide the eye across the surface. The following sections break down the practical methods, measurements, and finishing touches you need for successful results.
| Technique | Purpose | Best For | Considerations |
|---|---|---|---|
| On-point layout | Creates diamond secondary grid | Modern, energetic quilts | Requires cornerstones or setting triangles |
| Sashing between blocks | Spaces blocks and adds structure | Sampler quilts, scrappy designs | Width affects overall scale and stability |
| Corner setting triangles | Fills corners when set on point | All on-point quilts | Cut larger than finished to trim later |
| Side setting triangles | Used on two sides of the quilt | Rectangular quilt layouts | Direction matters to match block angle |
| Sashing as cornerstone frames | Defines each block unit clearly | Very long sashing strips | Reduces stretching and drift |
Planning Your On Point Layout
Before cutting, decide whether your quilt will be rectangular or square and how much sparkle you want. On-point quilts read diagonally, so the plan for sashing and triangles directly affects the final dimensions.
Use a simple math approach: measure the finished block size, multiply by the number of blocks across and down, then add setting triangles and sashing to find the exact quilt top size. This prevents surprises when you attach the last borders.
Measuring and Cutting for Sashing
Accurate cutting is the backbone of a neat on-point layout. Cut sashing strips to a fixed width that suits your block size, and use this width to keep spacing consistent between every block row and column.
Calculating Side Setting Triangles
For side setting triangles, multiply the finished block size by 1.414, then add 1 1/4 inches for seam allowance and trimming ease. This gives you a square to cut once on the bias for each corner of the quilt’s outer edge.
Calculating Corner Setting Triangles
For corner setting triangles, divide the finished block size by 1.414 and add 7/8 inch for seam allowance. Cut two of these squares on the diagonal to create the corner pieces that frame the quilt top neatly.
Sewing and Pressing Strategies
Stagger your sashing strips and use a consistent 1/4 inch seam to keep all points sharp. Press seams toward the sashing or toward darker fabrics to control bulk and make the secondary grid pop visually.
For long sashing rows, add a sashing cornerstone at the center to prevent drift. This small frame piece keeps each on-point block aligned and reduces the need for frequent trimming at the end of the row.
Final Planning and Assembly Tips
Refining measurements, stabilizing long seams, and pressing carefully ensure that your on-point quilt with sashing looks sharp and professionally constructed.
- Measure finished block size and decide on sashing width before cutting fabric.
- Use setting triangles to complete the quilt top edges and corners accurately.
- Add sashing cornerstones in long rows to control stretch and drift.
- Press seams consistently to maintain sharp points and a flat quilt top.
- Double-check diagonal lines and seam intersections before final assembly.
FAQ
Reader questions
How wide should my sashing be for on-point quilt blocks?
Choose a sashing width that is roughly one third to one half the finished block size for a balanced look, and keep the same width across all rows and columns to maintain consistent spacing and structure.
Do I need a special ruler for cutting side and corner setting triangles?
A clear quilting ruler that matches your finished block size simplifies cutting; for side triangles, use a square ruler aligned with the bias, and for corner triangles, use a square ruler to cut the smaller hypotenuse line accurately.
How can I prevent stretch when adding sashing to on-point blocks?
Use a sashing cornerstone at the intersection of each block row and column, stitch with a consistent 1/4 inch seam, and press seams vertically or toward darker fabrics to stabilize the units and minimize distortion.
Should I stitch and flip or chain piece when sewing sashing strips?
For faster, more consistent results, chain piece the sashing strips across the blocks first, then cut and press the seams before adding the setting triangles and final borders to complete the layout.