Instructables

How to make a water filter

Picture of how to make a water filter
a way to turn saltwater into drinking water.
 
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Step 1: Materials

Picture of materials
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salt.jpg
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bowl
plastic wrap
rubber bands
rock
water
salt
small jar

Step 2: Finish the construction

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next put the plastic wrap on the top a little loose and put the rubber band on the edges. then put the rock in the middle above the glass.

Step 3: Wait

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wait as long as you want, set it directly in sunlight ,just observe what happens after about a half hour, the the water starts to collect on the top. when you want, open it and taste the water.
enjoy!
tincanz5 years ago
this isn't water filtering... it's distillation :(
Very cool! I have tried this before, and it is very effective during the summer months. You can also drink your urine this way. And you can put a plastic bag over the leaves of a tree and when water evaporates from the leaves (transpiration) you can get a bit of clean water. Please change the title, because this is a still not a filter.
Double post.
sorry bout that........
ijo5 years ago
me crazzzzzzzzzzzzzzzzzzzy!
Not just saltwater either. Other sources of water can be re-used with this.
Bartboy6 years ago
Good, but as they said, it is NOT A FILTER!
littlewit6 years ago
Xrovevansx is right, it is a still and if you make the one that survivor man made using a hole instead of a bowl, you can procure up to two pints of water a day If you want to make it a little easier, add a straw from some surgical tubing so you don't have to disassemble it every time you want to get water from it. This will make it a lot easier and less frustrating, especially if you are in a real survival situation. I have actually have used this method and it is very effective.
xrobevansx6 years ago
this is not a filter, it is a still.
This is really useful, I first saw it on Survivor Man. Luckily I haven't had to use it.