OR: One finished patchwork sudoku.
I think the colouring works well to bring out the nine different blocks, and at closeup the individual squares made up of 1-9 patches are actually discernible.
So will I ever make another? Possibly. This example measures 40,5 cm x 40,5 cm and will most likely find use as a bread basket liner. The measurement is 27 units of 1,5 cm. each. But if one unit was 8 cm. the finished sudoku would be 216 cm. square, making it a good size for a bed spread for a double bed. It could be kind of cool.