I made some in Excel by putting a border around a group of cells. So I have 6 per page - each with 6 strings (border on rows) and 4 or maybe 5 (I don't remember) frets (column borders). Then with a new computer, as I didn't need Excel anymore since the computer came with Numbers, I did the same thing in numbers. I also made a fretboard and tabluture.

-Dave