What You're Making and Why It Matters

A sewing machine cover is a fitted fabric shell that protects your machine from dust, spills, and accidental damage when it's not in use. You sew it from two pieces of fabric—an outer layer and a lining—then join them at the edges, leaving an opening to turn it right-side out. The finished cover slides over your machine like a pillowcase and takes about two to three hours to complete, depending on your sewing speed.

The cover sits on your machine when it's stored, so it needs to fit snugly enough not to slip but loosely enough to slide on and off without forcing. Most home sewers make one from quilting cotton or canvas for the outer layer and cotton broadcloth or flannel for the lining, using a basic running stitch on a standard sewing machine.

Key Takeaways

  • Measure your machine's width, depth, and height, then add one inch to each dimension to account for seam allowance and ease of fit.
  • Cut two identical rectangles from outer fabric and two from lining fabric using your measurements, then pin and sew them in pairs with right sides facing.
  • Sandwich the outer and lining pieces together with right sides facing, sew around three sides, then turn the cover right-side out through the opening.
  • Topstitch around the opening edges to close it, press the finished cover with an iron, and test the fit on your machine before storing it.

Taking Accurate Measurements

Measure your sewing machine at its widest, deepest, and tallest points. Use a soft measuring tape or a ruler and a piece of string. Measure the width from the leftmost to rightmost part of the machine (usually the wheel or presser foot area), the depth from front to back, and the height from the table surface to the highest point (often the thread guide or presser foot lever when raised).

Write down all three measurements. Add one inch to the width and one inch to the depth—this gives you a half-inch seam allowance on each side and a half-inch of ease so the cover slides on smoothly. Do not add to the height; the cover should fit snugly from top to bottom. For example, if your machine measures 15 inches wide, 8 inches deep, and 12 inches tall, your finished cover dimensions are 16 by 9 inches (width by depth), and the height stays 12 inches.

Cutting Fabric and Preparing Pieces

Choose a medium-weight outer fabric like quilting cotton, canvas, or home-décor cotton. Avoid stretchy knits, which will not hold their shape. Pick a lining fabric like cotton broadcloth, flannel, or muslin. Both fabrics should be prewashed and dried to prevent shrinkage later.

Cut two rectangles from your outer fabric using your adjusted width and depth measurements. Cut two identical rectangles from your lining fabric. Label the pieces lightly with a pencil on the wrong side so you do not mix them up. Lay out one outer rectangle and one lining rectangle with right sides facing (the pretty sides touching), and pin them together around all four edges, spacing pins about four inches apart.

Sewing the Outer and Lining Layers

Thread your sewing machine with thread that matches your outer fabric. Set the stitch length to 2.5 millimeters (a standard stitch length). Sew around all four sides of the pinned outer and lining pieces using a half-inch seam allowance. Start at one corner, backstitch to lock the thread, and sew slowly so your seams stay straight. Leave the corners unsewn for now—you will trim them after.

When you reach a corner, stop with the needle down, lift the presser foot, rotate the fabric 90 degrees, lower the presser foot, and continue sewing. Backstitch at the end. Repeat this process with your second outer rectangle and second lining rectangle so you have two completed outer-and-lining units.

Trim the seam allowance at each corner to one-quarter inch to reduce bulk when you turn the cover right-side out. Clip diagonally across each corner without cutting into the stitching. Press both units with an iron on medium heat, pressing the seams flat.

Joining the Two Units and Turning Right-Side Out

Place the two units together so the outer fabrics face each other and the lining fabrics face each other (the wrong sides of the outer fabrics are now touching). Pin around all four edges. You are now sewing the outer pieces to each other and the lining pieces to each other in one step.

Sew around three complete sides using a half-inch seam allowance. On the fourth side, sew only six inches from one corner, then backstitch and stop. Leave a six-inch opening in the middle of that side—this is your turning hole. Trim the corners as before and press the seams flat.

Reach through the opening and grab the fabric on the inside. Pull gently and steadily until the entire cover turns right-side out. The outer fabric should now be on the outside and the lining on the inside. Poke out the corners with a blunt tool like a chopstick or the eraser end of a pencil so they are sharp and square. Press the entire cover with an iron, paying special attention to the opening edges.

Closing the Opening and Finishing

Fold the raw edges of the opening inward by half an inch on both the outer and lining fabrics. Press with an iron to crease the fold. Pin the opening closed so the folded edges meet in the middle. Thread your needle with thread that matches the outer fabric.

Topstitch around the entire perimeter of the cover, one-quarter inch from the edge. This stitch is both decorative and functional—it holds the opening closed and keeps the lining from shifting inside the outer fabric. Sew slowly and use a ruler or presser foot as a guide to keep the line straight. Backstitch at the start and end to lock the thread.

Press the finished cover one final time with an iron on medium heat. Slide it over your sewing machine to check the fit. It should sit snugly without bunching and should not require force to put on or take off. If it is too tight, you can carefully open one seam, trim a quarter-inch from the width or depth, and resew. If it is too loose, the cover will still protect your machine, though it may shift slightly.

Common Mistakes and How to Avoid Them

The most frequent error is measuring the machine without accounting for raised presser feet or thread guides. Measure with the presser foot in its highest position and the thread guide raised so your cover will fit even when the machine is in use. Another common mistake is using fabric that is too thin or stretchy, which will not hold its shape or protect the machine effectively.

Seam allowances that are too wide (more than half an inch) make the cover bulky and difficult to fit. Seam allowances that are too narrow (less than half an inch) can fray and weaken over time. Stick to a consistent half-inch allowance throughout. Finally, do not skip pressing. Pressing seams flat as you go makes the final cover look professional and helps you catch mistakes early.

Frequently Asked Questions

Can I make a cover for a serger or other specialty machine?

Yes, the same method works for any sewing machine or serger. Measure your specific machine and follow the same steps. Sergers are often taller and narrower than standard machines, so your measurements will straightforward be different. The sewing technique remains identical.

What if I do not have a sewing machine to sew the cover?

You can hand-sew the entire cover using a needle and thread. Use a running stitch (in and out of the fabric in one motion) or a backstitch (pushing the needle backward through the previous stitch hole for extra strength). Hand-sewing takes longer—usually four to six hours—but produces the same result. A backstitch is stronger and more durable for a cover that will be put on and taken off regularly.

Should I add padding or batting inside the cover?

Padding is optional. If you want extra protection against bumps or spills, you can add a layer of thin quilt batting between the outer fabric and lining. Cut the batting to the same size as your fabric pieces, then layer it between the outer and lining before sewing. This makes the cover slightly thicker and more protective but also slightly harder to fit on the machine.

Can I add a handle or drawstring to make it easier to remove?

Yes. Before you join the two units, sew a fabric loop or ribbon handle to the top center of the outer fabric (between the two units). When you turn the cover right-side out, the handle will be on the outside. A drawstring is trickier—you would need to leave a small opening in the seam, thread the drawstring through a channel, and close the opening by hand. A straightforward handle is easier and works just as well.

How often should I wash the cover?

Wash the cover whenever it looks dusty or stained, usually once or twice a year depending on your sewing space. Remove it from the machine, turn it inside out, and wash it in cool water on a gentle cycle with mild detergent. Dry it on low heat or air-dry it flat. Do not bleach or dry-clean it, as these can fade or damage the fabric.