Cans should be kept empty in a collection. At least that's my opinion, based on experience.
Cans with liquid inside are more prone to corrosion, which leads to the liquid spilling out of the can and damage other cans. In some cases, pressure buildup inside the cans causes them to "explode", where the top opening were forced open, and the contents burst out.
There was one time when the pressure inside a can was so high and it didn't explode, but instead the bottom of the can was "pushed out", making it bulge outwards. It was the very first item in my Coke collection, so I was pretty sad about it.
If these don't happen, then most likely the gas inside the cans disperse away, leaving less than half of the actual content. This would be pointless since if you're going to collect full cans, it should actually be full.
This is why I believe cans should be kept empty in a collection. Furthermore, empty cans cost less to ship if you're thinking of moving or trading as they weigh less.
Funnily enough, I've never experienced any of these problems in my bottle collection. Most people keep "full bottle" collection anyway, since the contents can be seen and it is cooler than empty bottles.
There are three common ways to empty your cans; top-opened, bottom-opened, and fake air-filled.
Top-Opened
This is the most obvious and easiest way to empty your cans. You open the cans through it's normal intended way, and drink it's contents. However, the opening is an eyesore.
Bottom-Opened
Using this way, you can empty your cans but still keep the top part sealed. You make two holes on the bottom of the cans, and empty out its contents.
Fake Air-Filled
This is my favorite method of emptying cans. There are no visual damage to the cans. It's a bit tricky, I will explain with the help of photos.
Turn the ring sideways, and using a sharp pointed object (knife) make a tiny hole where the ring would cover it in its original position.
Turn the can upside-down, and shake the can so that the trapped gas would push the liquid from the tiny hole.
To remove excess liquid, put the can upside down in hot water. The air inside will expand, pushing the liquid out of the can.
Wipe your can clean and return the ring to its original position. Now you have an empty can, without any obvious visual damage.
Cans with liquid inside are more prone to corrosion, which leads to the liquid spilling out of the can and damage other cans. In some cases, pressure buildup inside the cans causes them to "explode", where the top opening were forced open, and the contents burst out.
There was one time when the pressure inside a can was so high and it didn't explode, but instead the bottom of the can was "pushed out", making it bulge outwards. It was the very first item in my Coke collection, so I was pretty sad about it.
If these don't happen, then most likely the gas inside the cans disperse away, leaving less than half of the actual content. This would be pointless since if you're going to collect full cans, it should actually be full.
This is why I believe cans should be kept empty in a collection. Furthermore, empty cans cost less to ship if you're thinking of moving or trading as they weigh less.
Funnily enough, I've never experienced any of these problems in my bottle collection. Most people keep "full bottle" collection anyway, since the contents can be seen and it is cooler than empty bottles.
There are three common ways to empty your cans; top-opened, bottom-opened, and fake air-filled.
Top-Opened
This is the most obvious and easiest way to empty your cans. You open the cans through it's normal intended way, and drink it's contents. However, the opening is an eyesore.
Bottom-Opened
Using this way, you can empty your cans but still keep the top part sealed. You make two holes on the bottom of the cans, and empty out its contents.
Fake Air-Filled
This is my favorite method of emptying cans. There are no visual damage to the cans. It's a bit tricky, I will explain with the help of photos.
Turn the can upside-down, and shake the can so that the trapped gas would push the liquid from the tiny hole.
To remove excess liquid, put the can upside down in hot water. The air inside will expand, pushing the liquid out of the can.
Wipe your can clean and return the ring to its original position. Now you have an empty can, without any obvious visual damage.
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