![[Queen Mary University of London]](https://www.phase-trans.msm.cam.ac.uk/QMUL.png)
"Rebars" are long steel-rods that are used to reinforce concrete (which cannot support a tensile load). The steel may be placed in tension while the concrete sets, thereby leaving the concrete in compression. The ribbed surface helps the concrete to transfer stress on to the steel.
These rebars are scrap but as you will see, useful things are made from this by Ethiopian artisans.
NOtivce the shaped ends. These devices can be used to open crates, for example.
Here, there is a notch on the shaped end, presumably to enable nails to be extracted.
A variety of tools made from rebars.
This is amazing, a hacksaw skilfully fashioned from rebar.
To make such a saw takes a lot of very careful metalwork, an impressive demonstration of the blacksmith's abilities.
A cutting tool.
