The saw is built out of scraps and odd bits using angle iron as a base and an electric die grinder to spin a cut-off wheel. A small gear motor feeds the brass rod down a guide tube until it hits a ...

More portable saws are usually pushed by 10A motors ... Powered saws are often called chop saws or cut-off saws, but metal-cutting band saws and metal-cutting circular saws also are available.

It also has a pretty ergonomic design that supports one-handed operation, making it not just portable but also easier to operate in hard-to-reach places where a traditional cut-off saw might not fit.