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Pneumatic Squib For On-Actor Film Blood Effects

Step 2Build the Hand Held Control

Build the Hand Held Control
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The control unit allows the device to be charged with air, and holds pressure in the device until the actor triggers the effect. It is a design that was originally developed as a pilot trigger for an air cannon.

Clippard Parts List:

1x 3-way toggle valve (TV-3S)
1x Check-Valve ( I used a MCV-1BB and a short coupling 11999 - you can save a part and use a MCV-1AB)
Then, use one of the following air inlet designs

Design 1
1x 1/8" barb with 10-32 threads (CT4) capped with a
1/x short piece of 1/8" ID 1/4" OD urethane hose.

Design 2
A Quick Disconnect assembly made up of:
1x MJQC-VMT 10-32 threaded valve body
1x MJQC-CB4 1/8 barb quick disconnect cap

1. The check valve will have an arrow on it. If you ordered the valve with the suffix AA, screw a short coupling into the end of the valve the arrow points at. If you ordered the valve with the suffix AB, this end of the valve will already have male threads.

2. Screw the check valve into the bottom of the 3-way toggle so the arrow points towards the 3-way valve.

3. Screw either of the inlet assemblies described above into the open end of the check valve.

4. There is one remaining threaded port on the 3-way (the output)- attach your signal/control line to that port. The smaller, non-threaded opening on the 3-way is the exhaust and it should not be obstructed.

That's it - you should have something resembling the pictures from the above tutorial.
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