Every Welsh home had a carthen, the woven blanket that lived on beds and over the backs of chairs, folded away in a cupboard for the cold nights. My Nanna had them. So did everyone's. The patterns are so familiar that people recognise them before they can say why.

Carthenni Silhouette began there. We took the weave and cut it into solid silver, leaving the pattern and the space around it. A carthen is really a pattern of gaps as much as threads. The geometry is still unmistakable, and it turns something very old into something that reads as entirely contemporary.

The designs come from real blankets. The Caernarfon in particular, which is the one most people picture, along with the hatch and the long patterns that run through them.

Nothing is wasted. Every piece cut away becomes something in its own right, so the centre of a cross ends up as a pair of square earrings, and the offcut from one design is the beginning of another. That was deliberate from the start.

This is a collaboration with the artist Bex Elliott, who brought her knowledge of the old weave patterns to it.