My instructions for working this jeans knee patch technique have just gone up on the Sewing Directory site over here.
It’s a ‘tidy’ repair and so might not be to everybody’s taste. But here’s my elevator pitch. Mending, in general, offers bite-sized opportunities to test out a variety of needlework techniques. This repair is a great way to practise how to control a smoothly curved edge which is well worth mastering. Curve control is a type of fabric manipulation that’s used a lot in dressmaking (creating armholes, necklines etc) and in all kinds of other sewing projects (toy-making, soft furnishings etc), so it’ll stand you in good stead.
In technical sewing jargon, this is also an example of ‘reverse appliqué‘ – because the patch goes beneath the damaged area rather than on top of it. So, you neaten the worn area and turn it into a kind of window, behind which your patch sits. This repair is worked by hand, because it tends to be tricky to get a sewing machine into the restricted area of a jeans leg and (to my thinking, anyway) isn’t really worth the fuss of getting your machine out. But it doesn’t take very long to work, so please have a go. You should find that the resulting patch is smooth against the skin and comfortable to wear, while also feeling robust and secure. And if you try it and like it, then please come back and let me know!