re: Wall must drip "blood"
This is how we managed the
effect:
Our blood wall rig has a 16
foot length of 4" plastic pipe with one quarter of it cut out lengthwise. That long cut
edge was attached to the plastic sheet "wall". The plastic sheet wall actslike an
apron to catch the blood when the pipe was rotated a
bit. The ends of the plastic pipe were capped and fastened to large homemade wooden spindle with a trough for the fixed rope that pulled all of 8 inches to tip the blood contents onto the sheet wall. The rope end was fixed to one
edge of the troughed spindle which was in turn fixed to the cap end of the pipe, and caused the spindle to rotate the whole pipe like a steering wheel a little
bit. The whole thing simply hung on aircraft cable slings which allowed the pipe to rotate within the slings when someone pulled the rope going around the wooden spindle. The length of the wall is about 20 feet, and the blood runs down about halfway.
The blood mixture was bubblebath ( pinkish) and dishwashing liquid (blueish) and made a nice viscous easily cleanable mess. The blood poured out of the trough like cake batter out of a cakepan, then fingers of the mixture trailed onwards to the floor...
Cleanup involved wiping off the majority of the blood with a
sponge, and then taking the rig down to be hosed off. The floor is seald so it simply gets mopped. Clean-up does take some time.
It is worth it to see the glee with which students pour buckets of blood mixture into the trough to
preset the
effect. The wall of blood is very effective.
Major problems come in the method of fastening the plastic sheeting to the pipe. We used staples, and needed to reenforce that with strapping tape.