well I tried taping pop bottles to a tripod, then made a wooden frame... neither would get the droplets into the same place so I dug out an old enlarger and used that to hold a couple of smaller bottles rather than 2 litre pepsi... The old Vivitar enlarger is an ideal shape, with a solid frame, adjustable in height, directly over a nice flat surface... works well.
edit; "contraption" is spot on! Heath Robinson would have rejected the design for being silly!
yep, 10 (ten) second exposure...