When redoing a chair we bought at the Brimfield Flea Market, I wanted to make a really simple cushion for the back rest of the seat. I knew I wanted to use this gorgeous floral upholstery fabric and I was going to make a box cushion for the bottom of the seat, but I was really unsure what I was going to do for the back.
My best description of this style is a knife edge cushion but I really could not find anywhere on the internet that had this exact style that I came up with, even though I have seen this style before on furniture in stores.
I am naming it the basic cushion, because you only need to cut one piece of fabric to make it. You can make yours with a zipper, or you can leave an opening in that space and use an invisible stitch to sew it closed. I went with the zipper, because I wanted to be able to take the cover off. And here’s how you can make your own.
The cushion I will be making is 21 ” x 21” x 3”
First, decide the size you want your cushion to be.
Mark a piece of foam to your dimensions and use an electric or serrated knife to cut it to shape.
Now you will want to cut out your piece of fabric. To determine the size you will want to use the following equations.
width = width + height + 1” SA
length = (length x 2) + (height x 2) + 1” SA
gussets (square cutout size) = (height / 2) + ½” except for on folded edge, don’t add ½””.
So, my piece of fabric will be 25”x 49” with 2” gussets on the sides and 1.5″ x 2” gussets in the middle.
Usually when you make cushions and pillows you want the cover to be slightly smaller than your form, by 1 or two inches, this is so the cushion looks nice and full. In this case we are making the cover the same size as the foam because we added the Dacron padding so that will give it that extra oomph we are looking for.
Sew the short sides together with right sides facing using the longest stitch length your machine will allow.
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