Bias tape makers come in a variety of widths, too, so you aren't just stuck with the standard 1/2" width.
The first step of the process is to make a long strip of fabric cut on the bias, diagonal to the grain of the fabric. A long strip of bias cut material is sewn together to make a loop. However, the ends of the loop are offset.
Now the fabric is cut in a helical pattern. The trick is to make the strip a very uniform width. It should be 1/2" wider than the bias tape.
Unfortunately, on attempt #1, the width of the fabric strip was to variable and too narrow in spots. There wasn't enough to fold over in some places. I actually had go give up on this and buy new fabric!
I discovered that using scissors to cut the strip is a disaster. It's better to use a ruler and rotary cutter. Also, the 1/2" bias tape maker will actually accept a 1 1/4" strip. That leaves a little room for error in the cutting, especially since I cut the strip 1 1/2" wide, then trimmed where necessary. That was a lot of work, but it did work!
The final step is to feed the fabric through the tool. It goes in flat, it comes out folded. Then you use an iron to crease the material. You use the loop to pull the bias tape maker along the fabric strip.
I did try making bias tape by folding over the edges of a fabric strip. Don't do it! Getting a uniform width, especially if the fabric strip isn't a uniform width is very difficult.
Come back next time for some applications of the bias tape maker.
Rotary cutters rule............
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