i enjoyed scootermm's triptych so i decided to try a diptych of my own.
maybe i cheated....i flowed two plates and put them into the 5x7 holder together and then exposed them. i used my extra "drops" so they are about 5x3 inches each)next time i may leave a bit of space between them and i will be sure to make sure no collodion hits the edge so it does not look like i just cut them in half.