@yazamitaz, I just winged it man! Materials needed are; (1) 1" dowel rod, (2) 3/8x3/8 square rods, (1) 1x3, (1) 1x6, (1) 1x10, some wood screws, a 1" holes saw, a drill and a saw. I just measured in 1" from each end and 3/8" from the edge and spaced my holes 1-1/2" apart from center. Just use your own dimensions for number of pipes you want it to hold.
I'm sure it would work better with a harder wood like oak.