Kite builder's instructable
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- Kite builder commented on skeinywoman's instructable Desktop Message in a Bottle
- Kite builder commented on The King of Random's instructable 5 Ways to Start a Fire, Using Water
the filst for ways are all creating a lense out of the water to focus the sunlight to a small point.
View Instructable »the first four ways are all creating a lense out of the water to focus the sunlight to a small point.
tip for the plastic bottles version with the really floating small bottle:mix the sand with some glue to something like dough and push that with a stick to the bottom of the small bottle.so the sand stays at the bottom of the small bottle if some one shakes the big bottle, too