Mandrels help to make demanded shapes beautifully. An appropriate mandrel helps much.
There are also mandrel tools sold in the market.
In household, you can find many items to serve as a mandrel. The pen and the pencil are of the most popular items and I use them often.
Another good mandrel idea is using the thick wire.
Wires are produced by different gauges.
Thick ones can serve as mandrels as well.
Put it simply, the wire itself is not only one kind of materials but also is a good tool.
|3 mm thick wire mandrel|