Here's a little tutorial for you on how to make box corners. These can be used for all sorts of projects, I mainly use them for my bags and fabric storage boxes. They're really easy to do.....I've used a basic rectangle shape so you can see how simple and effective they are.
Take your project, which for this example I have sewn 2 flat pieces of fabric together and sewn a 1cm hem on 3 sides leave the top seam open...
Slot your hand in the open seam between the two layers....
Flatten both one of the side seams and the bottom seam, pinching them flat creating a point with the corner of your project....
Your corner will look like this....
Check to make sure that your bottom and side seam match and flow along the bottom and up the side as evenly as you can.....
Measure from the point down to a suitable place and make a mark with a pencil....
**tip: the further away your mark is from the point the deeper your box corner will be**
Using a ruler (or graders square) draw a horizontal line across your seam where you made your pencil mark, this will be your sewing line....
Run one line of stitching along your pencil mark......
I always like to go back and sew an extra line of stitching just over the seam, this will prevent your seam opening up once you have trimmed off the excess....
Now trim your corner approx 1cm away from the sewing line, this makes the corner sit better once turned through the correct way.....
Your box corner will now look like this :D
Now repeat this process again on the other corner....
Your box corners should now look like these....
Press open your seams....
Your box corners will now look like this...
Standing up all on its own thanks to the box corners....
Now you can turn your project in the right way....
And admire your handy work :D
Ta dahhhhh!!!
There you go, box corners that you can apply to any project you like! Go create!!