[grandcider]

I have a strange problem. One of the keys on my keyring has somehow become firmly wedged across the diameter, making it impossible to add or remove any keys.

I brought it to a locksmith's shop and he tried cutting through the ring with wire-cutters but said it was impossible. Then I went and bought a little hacksaw and tried sawing through the damn thing, but only managed to cut my finger.

Can anyone suggest what I might do?