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Picture of Sewing a perfect 3-D corner (for a cube)
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I have always had trouble making tidy corners for 3-D sewing projects. Since I worked out this technique I thought I'd share; it works well on heavier fabrics and for projects like fabric baby blocks where it really shows if you fudge the corner.

Hope this tutorial is helpful; leave a comment if you have questions.

Melissa
http://underconstructionblog.typepad.com
 
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Step 1: Cut out your fabric

Picture of Cut out your fabric
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In this example I'm making a cube so I cut out 6 identical squares of fabric but this technique works for any project where you need three pieces to intersect in a perfect 90 degree corner.

You'll also need a sewing machine.

(I also let my daughter decorate the fabric to make blocks for her cousin--this step is optional ;)

Step 2: Sew the first 2 pieces together

Picture of Sew the first 2 pieces together
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Here's the only trick to this project; start and stop sewing 1/4 inch away from the end of the fabric. This assumes a 1/4 inch seam allowance. If you use a different seam allowance, just stop that distance from each end. For example, if your seam allowance is 1/2 inch, start and stop 1/2 inch from the ends.

Ok, so to do this, stack your pieces of fabric good sides together with the edges lined up. You can see in the photo that I drew a line to show exactly where I needed to sew (this is just for the tutorial--you don't need to do this). Plant the needle 1/4 inch in from the edge and take a few stitches. Back stitch to lock the threads and continue stitching all the way across the project.

1/4 inch from the end, plant your needle and back stitch again.

Step 3: Attach the third piece of fabric

Picture of Attach the third piece of fabric
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Now attach the third piece of fabric; you want them to make an "L" shape.

When you're lining up the fabric, again, put good sides together. Then line up the edges of 2 pieces and fold the seam allowance of the third piece out of the way (you can do this because you left 1/4 in at the end of the seam). Look at the photo, this is hard to describe.

When stitching this seam, once again start and stop 1/4 inch from each end of the fabric and back stitch to lock the stitches. (see the second photo)

Step 4: Sew the last seam

Picture of Sew the last seam
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Now fold the fabrics to make the corner (this will make sense when the fabric is in your hands). Again, tuck the seam allowances out of the way and stitch. This time, on the end where all three pieces of fabric intersect, you can sew off the end. But be sure to backstitch.

Step 5: Turn your corner right side out (plus bonus content)

Picture of Turn your corner right side out (plus bonus content)
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When you finish the third seam, your project will look like the first photo (from the inside). Turn it right side out (second photo) and you're done.

If you wish to make a cube, continue adding squares to create a cube shape (it will be inside out). When you're ready to sew the last seam, stitch the corners and leave a gap along the center of the edge so you can turn the cube right side out (see third photo). You'll have to hand stitch closed the opening.
Thank soooo much!!!!! It works like a bom :))
nklaewkla4 years ago
That is great !
Thank you ever so much for your kindness.
Easy understanding and well photo..
I made it.
Thanks again.

Joy. Chiangmai , Thailand.
momm6 years ago
Thanks alot for that info you make it look so simple;especilly with the photos
I think I sort of had this idea when I was working on corners (and other tricky junctures), but I would always forget from one project to the next. (One always gets frustrated near the end and thinks it's time to swear the seams into submission; rarely works.) Thanks much for the writeup!
deregering6 years ago
Thank you, I might try it (again) now, with new hope!
This is great. I fought and fought with this when making my Robot plushie. Then again, I also took the lazy route and cute out a + and one extra square. :P
mdhaworth (author)  jessyratfink6 years ago
Yep, that's what I had been trying to do, cut as few pieces as possible, but it always came out funky and this seems to work so much better!
canida6 years ago
Nicely explained!
Corners are hard.
pfirsch6 years ago
Thank you for sharing! This will definitely come in handy.