There were some questions about Christina's bean bag chair project. Specifically, why not just make a shell that covers the existing shell, instead of transferring the beans from one shell to another? I brought up the same question myself, and as always, she had an answer. Here it is, in her own words.
You all doubt me. Fine.
There are two reasons I decided not to just encase the existing shell, having to do with the amount of work required and the comfort and stability of the finished thing.
(1) Doing it that way, less of the work could be done by machine. I'd have to leave a big enough hole to put the entire bean bag through (almost 4 feet in diameter) and then sew up the rest by hand. I hate sewing by hand, and a seam 2-3 yards long through two or more layers of denim? I don't think so. This way, the sewing was all by machine - just an 18 inch gap left, and I stuck a zipper in there (which is then covered by another panel, secured by velcro).
(2) The existing plastic or whatever covering material sucks. When pressure is put on it, the seams tear. Having an additional piece of material between one's rear and the bean bag doesn't change that, it'll still tear. Only then, we wouldn't be able to get at the tear to patch it with duct tape, even, like we've been doing. Pellets would escape the inner shell, faster and faster as the rips extended, and then there'd be a layer of loose pellets between the two shells. Which would be a lot less comfortable to sit on, and sort of unstable, too.
I'll admit that the pellet transfer is likely to be a comedy of errors. But I'd still rather do it this way. Plus, it'll just look nicer.
You all doubt me. Fine.
There are two reasons I decided not to just encase the existing shell, having to do with the amount of work required and the comfort and stability of the finished thing.
(1) Doing it that way, less of the work could be done by machine. I'd have to leave a big enough hole to put the entire bean bag through (almost 4 feet in diameter) and then sew up the rest by hand. I hate sewing by hand, and a seam 2-3 yards long through two or more layers of denim? I don't think so. This way, the sewing was all by machine - just an 18 inch gap left, and I stuck a zipper in there (which is then covered by another panel, secured by velcro).
(2) The existing plastic or whatever covering material sucks. When pressure is put on it, the seams tear. Having an additional piece of material between one's rear and the bean bag doesn't change that, it'll still tear. Only then, we wouldn't be able to get at the tear to patch it with duct tape, even, like we've been doing. Pellets would escape the inner shell, faster and faster as the rips extended, and then there'd be a layer of loose pellets between the two shells. Which would be a lot less comfortable to sit on, and sort of unstable, too.
I'll admit that the pellet transfer is likely to be a comedy of errors. But I'd still rather do it this way. Plus, it'll just look nicer.
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