Have you ever wondered how to make a buttonhole that is exactly the right size to accommodate a large button with a shank? There's an easy, fail safe method for determining the length of a buttonhole.
Until the other day, I've always measured the diameter of the button, and then added a little bit. I've never worried too much about the exactness of the extra little bit.
Two factors combined to make me find out just how much extra to add. The button was a big, round one with a shank, and adding the button was the last step in a pattern testing project.
The formula over at Sew Mama Sew resulted in a buttonhole that was the perfect length first time. I wasn't game enough to test it on the actual project. First buttonhole on scrap fabric, then the machine automatically sews identical buttonholes till I switch it off.
How do you work out the length of your buttonholes?
That's all of the test project that I can show you for now. You'll have to wait till next week to see the whole thing.