Can you reduce the pattern pieces on a copy machine?
To reduce, divide the size you want by the size you have. In other words, if your current pattern is 10.5" tall, and you want them to be 6" tall, divide 6 by 10.5, which is .57. On the copier, reduce by 57% and your alphabet will be 6".
To enlarge, swap the numbers. If you have 6" letters and want 10.5" letters, divide 10.5 by 6, which equals 1.75. Set your copier to enlarge by 175%.
Hope this helps!