Since I was bored, and I'm cheap, I decided to make my own contact print frame. I started with .25"x1.5"x2' strips of poplar which I got at Home Depot. I don't have a table saw, so I alternated 5 strips to make grooves for the glass, and the springs. The grooves for the glass are 3/8" deep. This is the result of the glue up.
After glue up, I roughly trimmed down the back of each piece, which is the part with the two boards sticking out. This weekend I'll use a hand plane to bring everything down to level.
I will probably line the groove for the glass with black felt just to protect the glass and prevent it from shaking in the frame.