Johnathan,
  If you have a flat surface as in a cement slab or something, use water. You
don't need a clamp one. Assemble trash cans, big buckets, or whatever and some
padding scraps, maybe 3/4 ply. Glue on your panel, pad with the scraps, top wit
h
the containers and bring on the garden hose. Leave the hose in the last one whe
n
you shut off the water. When the glue is done just unscrew the hose and it will
siphon itself back out. Just before the first container empties plug the hose
with your thumb and put in the next. The siphon will continue.
    Works for me and the price is right.
   Say, I think I just told this tale last month. Sounds familiar to me.
     yours,  Scott
*******************************
   Scott Grandstaff
   Box 409 Happy Camp, Ca  96039
   scottg@s...
   http://www.snowcrest.net/kitty/hpages/index.html