The nib on the Sonnet can be easily changed. I have more Sonnet nibs than pens and I change them now and again. The nib comes in a plastic tube that doubles as a tool for screwing out and in the nibs. A kind of spanner or wrench if you will.
My question is: how much torque should one use when putting in a nib? Is it sufficient just to screw it in with a gentle hand until it stops (or bottoms) or should an extra amount of torque be a applied to lock it in place?
Cheers
Anthony