Bass for camera

Where is the best place to buy engraving templates/stencils and what should I buy? - templates

I bought one of these small rotary instruments and I put my name and address on some things. I want to see clean, so I want to use a kind of model letters. Somewhere (?), I saw a mention of small metal models of letters and numbers to use when burning. I think that's what I need. My questions are: What should I do and what is the best place to buy?