I found a sample on line and was able to determine the size of the acetate letters.
I used a layout program to align all the letters then printed them on a laser acetate sheet.
I printed 2 sheets of letters including numbers and punctuation symbols.
I think this will do me nicely. It was sold at Indigo so I may check at Christmas time to see if I could buy another to get the letters.
Very happy with the project!