This is based on Puzzle generator. It places a multiplication table on a puzzle. The piece's height, as the number shown, is in millimeter.
n parameter may be any positive value, but I restrict it from 1 to 9 in the Customizer because I don't want the number too small. The number size is
piece_side_length / 3 is the .scad file.
If you want to generate a multiplication puzzle with a
n bigger than 9. Download the .scad file and modify the
size parameter of the
text in the
Find all my puzzles in puzzles collection.