The batch of fincar I got was very easy to split.
I used a razor blade and placed the pill on a piece of stiff cardboard for support. Take it nice and slow, don't try to crack it with the blade, it'll actually cut. The coating keeps it together nicely. After you split it in half, stand the cut piece up so the cut side is facing down and make the last cut. Do not saw, hold the blade on either side and slowly just push it down. I was really suprised how easy it was. The first couple I tried didn't turn out so nice because I was trying to "crack" them and not let the blade do its job.