Hmm, well I'm trying to think of a way that I'd do it without any power tools (since I don't have any). So take my comments with a grain of salt. I haven't tried this out.
I think that I might plane a bevel off the end of a board. Put a line about, say, 1/8" or 1/4" down (on the end), and another line on the face however far back you need for your wedge length, and then plane down to those lines.
Now you need to cut the wedges. Put the board up on end, and cut down to the line you drew on the face, starting 1/8" or so away from the end of your bevel. With a good handsaw, this isn't too hard. Then make your other cut (starting on the face line) to release that block, and then cut that into however many wedges you need.
If you need a lot, it should be no problem to make them uniform since you'll be marking the lines at the same points.
I think that I might plane a bevel off the end of a board. Put a line about, say, 1/8" or 1/4" down (on the end), and another line on the face however far back you need for your wedge length, and then plane down to those lines.
Now you need to cut the wedges. Put the board up on end, and cut down to the line you drew on the face, starting 1/8" or so away from the end of your bevel. With a good handsaw, this isn't too hard. Then make your other cut (starting on the face line) to release that block, and then cut that into however many wedges you need.
If you need a lot, it should be no problem to make them uniform since you'll be marking the lines at the same points.