WilliamT081423
Active member
This may not be the best place for this, so it can be removed if needed.
I've picked up three vintage vacuum bottles off of shop goodwill recently, and it may be like three strikes, and you're out. So far, two out of three of them seem to have their vacuum compromised and they don't hold heat. I've compared them to my newer Dutch military thermos, which will keep coffee piping hot for over 24 hours after being primed with hot water just off the boil from the kettle for 10 minutes.
The Stanley had a nice-looking patina and a couple of small dents on its bottom. I didn't think that would be a big deal, but from what I've found out, that's the worst place one of these can take a hit. Within five minutes of filling it with hot water, its outside was hot to the touch.
The large Uno-Vac looked more battered than its photos would suggest, which was strange, but whatever. I go to clean it with hot water and efferent tabs , and its outside became hot to the touch within a few minutes.
The third one is a quart-sized Uno-Vac that appears to be in almost mint condition, like it came right out of a 70s time capsule. It even came with a neat leatherette-looking zipper carry case. I've filled it with hot water and three efferdent tablets for cleaning, and after that's done, I'll fill it with just off the boil hot water and see if it feels hot to the touch and how much temperature it retains in 24 hours.
Is this sort of thing normal? Kind of a disappointment if it is. What do you do with a no longer functioning vacuum bottle? I'm not inclined to set up some kind of vintage display shelf, so the temptation is to put it in the metal recycling. The spiteful thing to do would be to donate it, but I'm not that terrible.
Edit: The minty-looking Uno-Vac lost 40deg or thereabouts overnight. Its sides felt like room temperature, but up at the top where it's filled, it was hot the whole time. So, it loses heat out of the top, which seems odd. Disappointing.
Edit 2: A little research shows that the vac may be intact on the Uno-Vac, but the o-ring in its #4 stopper may be past its prime and not sealing well. A 40-60 degree loss over 19 or so hours isn't terrible. Coffee would still be hot at that temp.
I've picked up three vintage vacuum bottles off of shop goodwill recently, and it may be like three strikes, and you're out. So far, two out of three of them seem to have their vacuum compromised and they don't hold heat. I've compared them to my newer Dutch military thermos, which will keep coffee piping hot for over 24 hours after being primed with hot water just off the boil from the kettle for 10 minutes.
The Stanley had a nice-looking patina and a couple of small dents on its bottom. I didn't think that would be a big deal, but from what I've found out, that's the worst place one of these can take a hit. Within five minutes of filling it with hot water, its outside was hot to the touch.
The large Uno-Vac looked more battered than its photos would suggest, which was strange, but whatever. I go to clean it with hot water and efferent tabs , and its outside became hot to the touch within a few minutes.
The third one is a quart-sized Uno-Vac that appears to be in almost mint condition, like it came right out of a 70s time capsule. It even came with a neat leatherette-looking zipper carry case. I've filled it with hot water and three efferdent tablets for cleaning, and after that's done, I'll fill it with just off the boil hot water and see if it feels hot to the touch and how much temperature it retains in 24 hours.
Is this sort of thing normal? Kind of a disappointment if it is. What do you do with a no longer functioning vacuum bottle? I'm not inclined to set up some kind of vintage display shelf, so the temptation is to put it in the metal recycling. The spiteful thing to do would be to donate it, but I'm not that terrible.
Edit: The minty-looking Uno-Vac lost 40deg or thereabouts overnight. Its sides felt like room temperature, but up at the top where it's filled, it was hot the whole time. So, it loses heat out of the top, which seems odd. Disappointing.
Edit 2: A little research shows that the vac may be intact on the Uno-Vac, but the o-ring in its #4 stopper may be past its prime and not sealing well. A 40-60 degree loss over 19 or so hours isn't terrible. Coffee would still be hot at that temp.
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