A number of people have suggested that I download commentaries already digitised on-line and use them. I did some work this week to see if this would be possible. Below is a screenshot of C.F. Burney’s commentary on Judges.
To me this well below the standard that I would want to use. The page colour is uneven and makes the text difficult to read. I experimented extracting the images, which removes the shadows and the colour-cast, but the resulting text is very pale and, again, difficult to read.
Fortunately I have access to commentaries through Book Aid locally and can order what they don’t have elsewhere, provided that the cost is reasonable. I will consider crowd-funding this if the cost becomes too great.