Lead (Pb, from the Latin word for the metal, plumbum), is a soft, dense, toxic metal that is the highest known element with stable isotopes. It is the end product of many nuclear decay chains. Lead has a low melting point, a property that allowed it to be smelted since antiquity.

Lead was widely used for plumbing applications (the word plumbing derives from the Latin name of lead) until its high toxicity was recognised in the 1950s. It still has numerous uses in everyday life, notably for automotive batteries and terminals.

Automotive battery terminal connectors are also often made of lead. These can be purchased relatively cheap from a parts shop. You can also obtain lead from some fishing sinkers marked as such, although it is increasingly rare to find them these days.

I simple took a battery connector and melted it. There are two steel nuts embedded in the lead that can be removed from the liquid. Liquid lead has a high surface tension and will not stick to most surfaces.