
Building a fake electric chair can be a fun project, especially for Halloween. The process involves constructing a wooden chair, adding restraints, and creating a convincing electric effect. The chair can be made from scrap wood, with stains for an authentic look. A mannequin or dummy is then needed, dressed in a convict costume, with LED lights in the head to simulate electrocution. To make the mannequin move, a jig saw or wiper motor can be used, with car door lock actuators to make the body jolt and the head thrash. Sound effects and strobe lights add to the overall experience, and the chair can be triggered by a button or a small fuse box.
| Characteristics | Values |
|---|---|
| Chair Construction | Basic and straightforward construction made from scrap wood |
| Mannequin | 6 ft full-body standing mannequin purchased from eBay |
| Assembly | Cut up at each joint and rebuilt using spray foam and fiberglass |
| Clothing | Orange jumpsuit, black pillowcase, elastic strap, metal wristbands, convict costume |
| Headpiece | Sheet metal headband with a sponge underneath, bolted with thick cable leads |
| Footwear | Black canvas shoes, old boots |
| Arm and Hand | Severed arms from a Halloween store |
| Head | Styrofoam head from a beauty supply store, mounted with LED lights and covered with a burlap sack |
| Restraints | Wrist straps, ankle straps, chest strap made from leather |
| Sound Effects | Mounted speakers, including one in the mannequin's throat for screaming sounds |
| Lighting | Strobe light aimed upward behind the mannequin |
| Fog Machine | Hose slipped into the jumpsuit to emit fog, creating the illusion of smoking |
| Power Source | Car battery hidden inside a stainless steel trash can |
| Actuators | Car door lock actuators for body movement and head thrashing |
| Trigger Mechanism | Small fuse box with a cutoff switch wired to a controller, activated by a button or partygoers |
| Vibrations | Hair clippers mounted under the seat, creating a hum and sharp crack |
| Control Algorithm | Power ramps up oscillatory from low to full, with a random delay for unpredictability |
What You'll Learn

Construct the chair from wood
Constructing an electric chair from wood is a simple and straightforward process. You can use scrap 2x4 wood pieces to build a basic chair structure. Start by cutting the wood to your desired dimensions and assembling the frame using wood screws or glue. Ensure the chair is sturdy and stable by reinforcing the joints and legs.
Once the chair frame is built, you can add additional features to enhance its authenticity. Consider staining the wood to give it an aged or distressed appearance. You can also add armrests, a headrest, and a seat cushion to provide comfort and realism. If you want to include restraints, you can attach wrist and ankle straps made from leather or fabric.
To create a more intricate design, you can incorporate moving parts to simulate the electric shock effect. This can be achieved by mounting a jig saw or a wiper motor to the back of the chair, allowing the upper body of the dummy to move back and forth. Ensure that all electrical components are safely secured and out of sight.
For a finishing touch, consider adding props or accessories, such as a headset made from aluminium bar stock or a metal bowl. You can also include a control panel or a transformer box to further enhance the illusion of a functional electric chair. Remember to prioritize safety and ensure that all electrical connections are properly insulated and secured.
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Create a mannequin or dummy
Creating a mannequin or dummy for your fake electric chair can be a fun project and will cost you less than $50. Here is a step-by-step guide to help you get started:
Prepare the Base
Start by putting on a fitted shirt that you don't mind ruining. You will use this shirt as the base for your mannequin. If you want to create a mannequin with your measurements, extend the shirt using paper towels from the hips to the neck, similar to a turtleneck. Tape the paper towels to the shirt, either inside or outside.
Duct Tape Moulding
Now, cover yourself (or the person you are sizing the mannequin to) with strips of duct tape from the neck to the waist. Ensure the tape is tight and secure, creating a body double mould.
Cut and Seal
Have an assistant cut the shirt off your body. Seal the cut ends with duct tape, ensuring all gaps are covered. You can also use duct tape to touch up any ragged or jagged edges on the mannequin.
Stuffing
Stuff the shirt with polyester filling or wadded-up newspaper. Avoid over-stuffing to maintain the shape and structure. You can also use plastic shopping bags or spray foam for stuffing, but be cautious with the latter as it can distort the form.
Cardboard Base
Cut cardboard pieces in the shape of the neck, arms, and bottom holes of the mannequin. Place these pieces in their respective spots and tape them securely. This step helps prevent the stuffing from falling out, so precision is not necessary. Don't forget to cut a hole for the hanger in the cardboard that fills the neck hole.
Final Assembly
Secure the mannequin to a sturdy metal stand, such as a lamp post. You can also use fishing line attached to hooks in the ceiling to suspend the mannequin if you don't want it to stand on the floor. Weights in the feet, such as canned food, will help your mannequin stay upright.
Optional Details
You can cover the mannequin with fabric, such as a fitted shirt or a sewn cover using cotton or jersey fabric. For a realistic face, apply a bathing cap greased with petroleum jelly over the model's head, paying attention to the eyebrows and eyelashes. You can also purchase a cheap Styrofoam head from a craft store and add a wig and a mask.
Now you have a completed mannequin that can be dressed in an orange jumpsuit and placed in your fake electric chair! Don't forget to add the final touches, like a black pillowcase over the head and metal bands on the wrists, to create a truly terrifying display.
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Add sound and lighting effects
To add sound and lighting effects to your fake electric chair, you can use a variety of methods and materials.
For sound effects, one option is to mount speakers strategically. You can place one speaker at the back of the chair and another in the throat of a mannequin, so the screams seem to come directly from the mannequin. You can also add a soundtrack of electricity crackling, which can be played through a cellphone or iPad to enhance the illusion. If you're looking for a more cost-effective option, a simple switch that makes screaming and elocution sounds can be purchased for around $10.
For lighting effects, strobe lights are a popular choice. Attach two strobe lights to the top of the chair's frame, alternating between on and off settings to simulate an intense electric shock. You can also use red LEDs, which can be secured with a hot glue gun, to create an eerie effect.
Additionally, consider incorporating a fog machine to emit fog from the mannequin's clothing, making it appear as if the mannequin is smoking.
To control the sound and lighting effects, you can use a controller such as a 4-channel picaboo plus controller or a variable-speed drill, which produces an appropriately "electric" sound.
For an interactive element, you can wire a small fuse box with a cutoff switch to the controller, allowing guests to trigger the effects themselves, becoming the "executioners."
Remember to be creative and have fun with the process, and always prioritize safety when working with electrical components.
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Make a control mechanism
Making a control mechanism for a fake electric chair can be done in several ways, depending on the desired level of interactivity and complexity. Here is a step-by-step guide to creating a control mechanism:
- Decide on the Trigger Mechanism: Firstly, determine how you want the electric chair to be triggered. You can opt for a simple button that, when pressed, initiates the electric chair's animation. Alternatively, for a more interactive experience, you can use a small fuse box with a cutoff switch, allowing users to act as the executioner by flipping the switch.
- Choose a Controller: You can use a microcontroller like an Arduino or a 4-channel Picaboo Plus controller to orchestrate the various components of the electric chair. These controllers can be programmed or wired to respond to the trigger mechanism and activate the subsequent effects.
- Connect Actuators: To create movement in the mannequin or dummy, you can use actuators or a jigsaw. Car door lock actuators can be wired to the mannequin's body and head, making them jolt and thrash around convincingly. Alternatively, a jigsaw mounted to the back of the chair can be used to shake the dummy back and forth. Ensure that the actuators or jigsaw are securely attached and won't detach during the performance.
- Add Sound and Lighting: Enhance the realism of your electric chair by incorporating sound and lighting effects. Mount speakers near the mannequin to play pre-recorded screams, making it seem like the sound is coming directly from them. Strobe lights aimed at the mannequin can further intensify the illusion.
- Power the Mechanism: Consider using a car battery to power the actuators, fog machine, and any other electrical components. Hide the car battery inside a stainless steel trash can, which can be decorated with off-white table legs and cables to resemble a "transformer" box.
- Test and Adjust: Once you've assembled the control mechanism, thoroughly test each component to ensure they work as intended. Make any necessary adjustments to the timing, sound levels, and movement to create the desired effect.
Remember to prioritize safety when building and operating the fake electric chair, especially when working with electrical components and power sources.
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Design a power source
Designing a power source for a fake electric chair can be a fun and creative project, especially for Halloween or other themed events. Here are some detailed instructions to help you get started:
Power Source Options:
Firstly, consider your power source options. You can choose between using electricity or battery power for your fake electric chair. Both options have their advantages and can be designed in creative ways to enhance the overall effect of the chair.
Electrical Power:
If you decide to use electrical power, you can simply plug your chair into a power outlet. This option may require more planning and safe wiring practices to ensure the electricity flows correctly and safely. You can design a "transformer"-looking box, as mentioned in one source, to hide the electrical connections and make it look scarier. This box can be made from a stainless steel trash can, with added table legs painted to look like insulators, and wires wrapped around them for effect.
Battery Power:
Alternatively, you can use batteries as your power source. This option provides more flexibility in terms of placement since you are not restricted by the length of a power cord. Car batteries are a great option, as they can power actuators and fog machines, as mentioned by one source. You can hide the battery inside a box or within the structure of the chair itself.
Combining Power Sources:
You can also combine both electrical power and batteries for a more complex setup. For example, you could use a car battery to power certain components, such as the fog machine and actuators, while plugging other elements, like lighting or sound effects, into a power outlet.
Creative Power Source Ideas:
To enhance the theme and scare factor, consider adding creative elements to your power source setup. For example, you could use a small fuse box with a cutoff switch wired to a controller, giving trick-or-treaters the ability to "fry the death row inmate" by flipping the switch, as described in one source. This interactive element adds to the overall experience.
Remember to plan your power source setup based on the specific effects and features you want to include in your fake electric chair. Ensure that you follow safety guidelines and use the appropriate tools and connections for your power source to prevent any hazards.
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