how to make a knife
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Glass Bottles
Glass bottles are bottles created from glass. They can vary in size considerably, but are most commonly found in sizes ranging between about 10ml and 5 litres.
The history of glass can be traced back to at least 12,000 BC where glass coated objects have been found.[1]
Millions of glass bottles are created worldwide every day. On average there are at least 2 bottle-making factories in each county. It is a highly mechanized process, and the bottles in use now are no longer hand blown as they were in the past.[citation needed]
Such bottles can be used as weapons, either being used to hit someone by themselves, broken to create a make-shift knife, or made into a Molotov Cocktail.
To strengthen glass bottles, the process of lamination is sometimes done. Laminated safety glass is made by combining a layer of plastic over glass. When a non-laminated bottle is dropped, the glass breaks sending pieces of glass everywhere. When a laminated bottle is dropped, the glass still breaks, though the outer layer of plastic contains the broken pieces of glass.[1]
Coca-Cola's "Contour Bottles" are a well known type of glass bottles.
How to make a Knife (A-Z of Bushcraft)
