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It is a happy robot bag!
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This is the outside view, front and back.
I just love the canvas robot fabric. It is awesome. And its heavier weight works really well for the bag. The pattern actually calls for two decorator-weight fabrics. But when I bought the robot fabric, the coordinates I picked were quilting-weight. I decided to use both of them anyway. I didn't have much of the stripe, so it is just used as an accent. For everything else, I used the number print. Numbers just seemed appropriate for robots (though I suppose if I wanted to be really cool, I would have found one with just 0s and 1s).
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And here's the reverse side.
I did make a couple of changes to the design (in order to incorporate more of the 3rd print), including a small pocket on the inside of the bag and adding contrast bands to the the big pockets.
The instructions for this bag were clear and concise. I think it definitely fits the "easy" rating ascribed to it in the book. If not for the massive time-sink involved in applying interfacing to every single piece, it would be a pretty quick project. But because I used quilting-weight cotton for some the bag, I definitely felt like that was a step I couldn't skip.
Like the Cosmo bag, this one is HUGE. But I think it is going to make an excellent library book bag.
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Bonus: Big Bear likes it too!