The Steve Mason Luthiers. Luthier: one who repairs, improves and creates stringed musical instruments. We are a loose confederation of 5 Luthiers, making and repairing Guitars, Banjos, Violins, Mandolins, etc. in Lawrence, Kansas. We are open by appointment, which just means that we don't have anyone waiting at the counter. Call us and tell us when you want to come and we'll meet you at the door..