Plasma-powered Death Ray




Store-bought death rays are too weak. They injure your victim or light him on fire, but fail to vaporize him completely.

Higher-end models will vaporize individuals, but what if you need to bring down a helicopter?

Now you can harness the power of the atom in a convenient, hand-held laser blaster. Use this power to obliterate armies, navies, and even small cities with a single blast!

Great for invading Earth, establishing yourself as someone's arch-nemesis, or dispatching handsome British government operatives, the Plasma-powered Death Ray is a necessity for today's busy super-villain.

The gun is shown in this video with my Realistic Alien Costume.

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Step 1: Made Of


1. Plastic toy water pistol.
2. Plasma ball "mood light" from auto parts store.
3. Laser pointer pen.
4. Antique spray paint.
5. Crayola Model Magic or other filler


1. Soldering iron.
2. Dremel or other rotary tool.
3. Super glue
4. Glue gun.

Step 2: The Plasma Ball

I bought my plasma ball online as a "mood light" auto accessory.

Although it is meant to be plugged into a car cigarette lighter, the packaging includes two battery packs so that you can see what it looks like before you buy it. These battery packs were the ones I used to power my plasma ball.

I carefully cracked open the plastic casing around the glass globe. I opened up the plastic casing and discarded it. I also cut off one of the battery packs (it works with just one) and the LED light. I found that there was no need to connect the wires the connected to the LED light.

Step 3: The Laser Pointer

I bought a cheap $2 laser pointer at the discount store. It was the kind you use to torment your pets. Using a rotary tool, I cut out the section of the metal tube that has the button.

I removed the button and then soldered some longer (about 12') wires onto the contact points where the button was.

I attached a new, bigger button to the other end of the wires.

Step 4: The Gun

I cut open the back of the water pistol with a rotary tool. Through this hole I gutted the gun, removing the trigger, pump, and little plastic tube. I also cut out a hole in the muzzle of the gun for the laser pointer and where the trigger was for the button.

Working through the back of the gun, I pushed the tip of the laser pointer out through the muzzle of the gun and ran the wires of the button the inside of the gun to where the trigger was. The button was pushed out through the hole I had made there.

Next I stuffed in the guts of the plasma ball and its battery pack. The plasma ball was left sticking out the back, the switch was left sticking out the side, and everything else was hidden inside the body of the gun.

I superglued some of the panels back on that I had had to break off in order the put everything inside the gun. Then I covered the cavity with Crayola Model Magic.

Step 5: Paint!

I spray painted it silver.

The gun fires the laser light when the trigger button is squeezed. The plasma globe turns on separately by flipping the switch on the side of the gun. Looks very cool in the dark!

Use your death ray responsibly!
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    17 Discussions


    2 years ago

    hilarious! creative! good job!


    3 years ago

    with technology you can make a lightsaber(not actually light or laser[which are pretty much the same things]) but plasma and magnetic fields. Same with the energy swords.

    That's really cool.
    Great for a vacation in a video game world or some other exotic dimension. ;)


    8 years ago on Introduction

    Great job aiming the laser directly into the camera and messing up the color balance.


    8 years ago on Introduction

    Nice! Wonder if it would have been possible to remove the two globes in the middle of the gun, and replace those with two plasma balls? That would look great! On your next build, try keeping the original gun trigger, but have the button attached to the trigger inside the gun body, so pulling the trigger actually activates the button. Or a spring (for tension and trigger return) and some bare wire contacts would work too, cut down on weight and cost.

    Great build, though! I'm lovin that plasma ball!

    1 reply

    Reply 8 years ago on Introduction

    Howdy! That would indeed look cool. I had some trouble fitting the plasma ball guts inside the gun as it was, so that would probably have to be done with a gun with a bigger body. The battery pack and the transformer necessary to run the sphere are each about as big as the sphere itself.

    As for the trigger, I actually intended to use the original trigger, but broke it by mistake in the process of removing the water pump.

    Both great ideas! I think my next step will be to make it look more weathered and battle-worn.


    8 years ago on Introduction

    Now all you need is a robot army before you can begin your plan of World Conquest!

    1 reply

    Reply 8 years ago on Introduction

    A robot army. That would be perfect. Who wants to get going on that instructable? I would be much obliged!