This instructable will show how to patch a knee hole so that it doesn't immediately rip again.
Working Jeans: The jeans that I'm patching are "working" jeans-- they're the ones I put on to get messy in the yard, painting something or I know I'm going to get dirty working hard. They're not stylish- in fact they're probably "mommy jeans" because...they're OLD!
They're also really comfy and soft (because they're...OLD!)
So having a hole in the knee doesnt work for me- it snags, gets my knee dirty and makes life uncomfortable.
I'm also fixing a hole next to the pocket on the rear because while I'm patching, I might as well do it too!
Step 1: Flex the Hole
Put the pants on a curved surface, like your lap and slightly flex the hole and pin it carefully. You don't want to sew the hole up exactly the same size but give it a little flexing room because your knee bends and you need extra room for bending. Places where you don't bend you don't need to do this.
With your chosen material for your patch, make sure you have extra fabric all the way around.
For the "butt" hole (couldn't resist the pun!) pin on the inside, turn it right side out and re-pin with the pins on the outside where you can see them. I'll sew next to a pocket on the outside as I want to see where I'm sewing.
You'll have to decide if you want the patch to show or not, or maybe just peek out a little.
Step 2: Sewing the Patch
Leave the pins while sewing until the presser foot is just barely on the pin, then take them out. I'm using these big quilting pins because they're easy to see and long. I try not to sew over the pins because they're bigger than normal and will break a needle.
Use a zigzag stitch that is fairly wide. Sew all the way around at least twice. If it is too hard to sew all the way around, do it in two L shape parts. I also discovered that sometimes it is easier to use the reverse button and sew backwards rather than trying to turn the pants around. It can be pretty tight especially around that third side.
Put your arm/hand inside periodically so you can feel what is going on inside. Since the fabric is really scrunched up, it is easy to accidentally snag it and sew it shut. And then you'll have to not only rip out stitches, but get it scrunched up on your machine, AGAIN!
Depending on whether you sewed the patch on the outside or the inside of the pants, you may be able to skip this next part.
Step 3: Sewing Next to the Hole
Step 4: New Patch and a Good Flex!
Step 5: Final Thoughts
I'm submitting this simple instructable for those who like to fix things, rather than throwing away. I know it isn't a flashy and even really dazzling kind of thing to do, butt rather practical and thrifty. But I hope someone can use this knowledge for their problem, even if the problem is just a silly little hole in your comfy jeans.