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Halloween Prop Menu : Pneumatic Control of Props Pneumatic Control of Props A lot of effects can be animated with the use of a pneumatic cylinder. You will need the following items:
Now you will need to prepare the washing machine filler valve. Most washing machine filling valves are standard and can be purchased at an appliance repair store. I got mine for about $20 at a local repair shop. There is a hot and cold water inlet, as well as a single water outlet. The pressurized air will be connected to either the hot or cold water connector. You will want to plug up the other inlet connector, since they are both connected and air escapes if you don't. To the outlet connector you need to connect the pneumatic cylinder. In between the outlet connector and the pneumatic cylinder, you need to put a brass drain cock. This will allow the prop to return to its original position after it is deactivated. You can, at your own discretion, connect the pneumatic cylinder and the washer fill valve with assorted pipe fittings (see pictures below for ideas). To activate the pneumatic cylinder, connect 120VAC to the washing machine filler valve solenoid as shown in the pictures below. After connecting the washing machine filler valve and pneumatic cylinder, you can connect the cylinder to whatever you want to animate. The average cylinder only has a 6.25 inch thrust. Although there is a limited cylinder movement, pivot points and rotational leverage can be used to move objects at much greater distances.
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