ferrule ferrule

A pencil's ferrule is the metal part that connects the wood with the eraser.

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No, ferrule is not an element. To be an element, a substance must have all the same type of atom. Once it has this, it can go on the Periodic Table. So, as ferrule has many different types of atom in it, it's not an element.

The old ferrule is cut off, the tip is cleaned, and the new ferrule is applied using cement. After this has dried, the cue tip must be applied and clamped. After the cement for the cue tip has dried, the cue tip need to be properly finished.