Cant he make his own templates out of 1/4" MDF?
The letters would have to be larger to account from the guide bush he has.
An adjustable pantograph could be used to draw the letters to the desired size.
I'd be inclined to make templates of a set width so they can all be lined up right and also have a centre line marked on each letter to keep them equi-spaced.
If the letters are well spaced he could have 5 or 6 letters on each template so would need 6 templates for the alphabet plus 2 more templates for all the numbers.
The letters would have to be larger to account from the guide bush he has.
An adjustable pantograph could be used to draw the letters to the desired size.
I'd be inclined to make templates of a set width so they can all be lined up right and also have a centre line marked on each letter to keep them equi-spaced.
If the letters are well spaced he could have 5 or 6 letters on each template so would need 6 templates for the alphabet plus 2 more templates for all the numbers.