The shape is about right. Get the old Dremel out and cut off the top and come up with a lid of some kind.
Sue
Yup. Done that - I cut away an old bottle just to enjoy a bit of dremeling. Works.
But all flasks I have seen have those wretched seams at the bottom ... I suppose they're fine for storing beverage, but I don't want to fuss with heating them. Soldering melts at pretty low temperature.
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