Plans
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The Basics:

Build a modular ignition system.
We've found that most people don't want to buy another grill lighter for each gun they make so we've designed a modular ignition system. This allows you to easily use one grill lighter for all of you guns. (uses screw electrodes in the following plans)
What you need: 4" of 3/4" PVC pipe, 2 alligator clips, 4-8' of cable, one grill lighter, some electrical tape

  1. Take the wire and cut it in half.
  2. Connect a alligator clip to the end of each wire.
  3. Tape the two wires together.
  4. Connect the other ends to the grill lighter (connecters should be included)
  5. Slip the 3/4" PVC over the clips and over the wire to the trigger (the PVC should fit perfectly around the trigger)


Build a modular ignition system Type 2.
INSTEAD of using the screws in the following gun plans use this setup!!

Another way to use the modular ignition system, is to permanently glue the ends of the wires into a cap to use with all the guns.
What you need: 4" of 3/4" PVC pipe, a paper clip, 4-8' of cable, one grill lighter, some electrical tape, cap to use in all of your guns, Quick Steel glue, soldering equipment.

  1. Take the wire and cut it in half.
  2. Drill 2 tiny holes in the cap (on either side of the square deal).
  3. Insert the wires in the cap.
  4. Use Quick Steel to secure the wires in place.
  5. Solder a paper clip to the end of one wire.
  6. Bend the paper clip so that is almost touches the other wire end.
  7. Tape the two wires together on the outside.
  8. Slip the 3/4" PVC over the clips and over the wire.
  9. Connect the other ends to the grill lighter (connecters should be included)
  10. Slip the 3/4" PVC over the trigger (the PVC should fit perfectly around the trigger)

Build a spud-shell cutter
After making a gun you need an easy way to make the cylindrical shells that you fire out of your gun What you'll need: 3" of PVC pipe (it should be the same size of the gun's barrel.)

  1. Cut the piece of the barrel sized PVC
  2. Spend some quality time sharpening one end of the PVC
  3. To use the spud-shell cutter
    1. Put a spud on the ground
    2. Place the spud-shell cutter on top of the spud
    3. Smack the top of the spud-shell cutter
    4. Remove the shell form the spud-shell maker
    5. Lock and load

Build a basic spud gun.
Refer to these instructions when build any of the other Spud Works designed guns below.

What you'll need: 6-10" of 3" PVC pipe, 1' to 2' of 1.5" PVC pipe, a 1.5" to 3" reducer, a 3" female converter (goes on the 3" pipe and has threads), cap for the 3" female converter, PVC purple primer, PVC glue, one 2" screw, one 1.5" screw, and a modular ignition system

  1. Cut all the pieces to length.
  2. Purple prime all the areas which will require glue.
  3. Put the female converter to the 3" pipe, then glue the 3" to 1.5" converter, then the 1.5" barrel to that. Only put glue on the pieces you are currently putting together.
  4. Screw the 2" screw in to the center of the 3" pipe.
  5. Screw the 1.5" screw in to the center of the 3" pipe a quarter turn.
  6. LET IT DRY!
  7. After you let it dry, let it dry some more.
  8. Think about how glue fumes blow up, let it dry some more.
  9. Take your new toy (ok, spud guns are not toys) outside.
  10. Connect the modular ignition system (above) to the electrodes (those screws).
  11. Have a friend stand 5 feet or so away from the gun and have him look in the rear leave the cap off silly!. Click the igniter. Did he see a spark?
  12. If he did, do it again.
  13. Isn't that fun? Do it again, if your friend is not giddy, STOP.
  14. You now have a spud gun! To figure out how to fire these damn things look at the "What the?" pages.

Intermediate:

Build The Spudinator
spudinator.gif (12351 bytes)
What you'll need: 1' of 3" PVC pipe, 3' of 1.5" PVC pipe, two 1.5" to 3" reducers, a 3" female converter (goes on the 3" pipe and has threads), cap for the 3" female converter, PVC purple primer, PVC glue, one 2" screw, one 1.5" screw, and a modular ignition system
This gun is built the same way as the basic gun but its a lot bigger and has a bigger trajectory and a bigger boom. The second 1.5"-3" reducer goes on the end of the barrel and is just for looks.

Build The Big Burtha
What you'll need: ~1' of 6" PVC pipe, 3' of 2" PVC pipe, a 6" to 2" reducer (you may need more than one reducer to do this job), a 6" female converter (goes on the 6" pipe and has threads), cap for the 6" female converter, PVC purple primer, PVC glue, two real long screws, and a modular ignition system
This gun is built the same way as the basic gun but its a lot lot lot bigger and has a insane trajectory and a bigger boom blast ka-boom. (We have not built one of these big suckers...yet. If you do decide to build this bastard, tell us your experience with it, what you blew away, etc.

Build The Zookenie (patent pending)
What you'll need: 6-8" of 3" PVC pipe, 1' of 3/4" PVC pipe, a 2" to 3/4" reducer (or series of reducers), a 2" female converter (goes on the 2" pipe and has threads), cap for the 2" female converter, PVC purple primer, PVC glue, 2 screws, and a modular ignition system
This gun is built the same way as the basic gun but its a lot smaller and is VERY portable.

More Advanced

Build The Silencer
(untested)

silencer.gif (3125 bytes)
What you'll need: 6" of 3" PVC pipe, 8"-9" of 1 1/2" pipe, two 3" to 1 1/2" reducers, some foam rubber.

  1. Take the 1.5" Pipe and drill 1/8" holes in it each about 1" from eachother.
  2. Take both of the reducers and file out the ridge that prevents the 1.5" pipe from going all the way through.
  3. Slide the 1.5" throught the reducer so that it looks like an umbrella
  4. Glue the pipe to the reducer so that it leaves room for the silencer to be glued to the gun straight.
  5. Glue the filed reducer, with the 1.5" pipe through it, to the end of the 3" pipe
  6. Stuff the gap between the 1.5" and the inside of the 3" pipe with the foam rubber.
  7. Glue the other reducer to the end of the 3" letting the 1.5" go throught it
  8. Glue it to the end of your gun

Build The Lil' Bastard (patent pending)
lilbastard.gif (13527 bytes)
What you'll need: 18",4",& 1 1/2" sections of 1 1/2" PVC pipe, 6" section of 2" PVC pipe, a 2"X 2"X 1 1/2" 45 degree Tee, a 2" to 1 1/2" reducer, a 1 1/2" pipe cap, 2" female converter (goes on the 2" pipe and has threads), a 2" threaded cap, two screws for the electrodes.
The Lil' Bastard is a gun that a step ahead of the Zookenie. It still shoots a 1.5 inch, but it's very portable and, spite the size, packs a punch.

  1. Start with the 45 degree Tee piece, glue the 4" 1.5" section to the protruding 1.5" 45 degree part.
  2. Glue the 1.5" pipe cap to the 4" 1.5 section. This is your handle.
  3. Hold the components you've glued together, so that the handle is pointing up and out to the side.
  4. Glue the 6" 2" section to the top of the current components.
  5. Glue the 2" female thread converter to the top of that.
  6. Glue the 18" 1.5" section to the bottom of the current components.
  7. Lastly install your electrodes.
  8. You now have a Lil' Bastard (patent pending).

Build The Psycho Sniper
Still under development

Most Advanced

Build the All in One Spud Gun
Designed by: Allen Forsman

Assemble all PVC parts as shown in drawing.

  • The igniter is your basic gas grill igniters.
  • Take a small nail or cut a short piece of stiff wire
    Run from the ground connection near the base of the unit
    to the tip and epoxy in place with some 5 minute epoxy.
  • You want to leave about 1/16" to 1/8" between
    the tip of the wire and the tip of the sparker.
  • After the epoxy is hard you can adjust the gap to get the best spark.
  • Drill a hole is the PVC threaded plug and epoxy the spark unit into the plug.
  • Use enough epoxy on the inside to fill the square hole about half-way up.


For can and ramrod attachments, use PVC glue.
You can make the attachments a lot sturdier by saving the PVC "sawdust" from cutting the pieces and using it as filler around the gaps and soaking it with PVC glue.

Can Cradle-

  1. Cut 1" long pieces of 1.5" PVS in half.
  2. Glue both pieces upside down to top ot the 3" tee.
  3. Use rubber bands to hold the WD-40 can in place.
  4. You can use just about any flammable spray stuff that has a tube.
  5. Drill a small hole in the top of the 3" cleanout just big enough to stick the tube into.
  6. Cut the tube to leave about 1/2" inside the combustion chamber.
  7. If you want you can seal around the spray tube with silicone or epoxy
    (the small size will not make a noticeable drop in pressure even if it leaks)

I used WD-40 because you can get it in small cans, but it tends to leave an oily residue.
Just about anything that uses butane or propane as a propellant will work.
If you use a big can of whatever, size your can cradles accordingly.

Ram Rod Clips-

  1. Use two 1" pieces of 1" pipe or 3/4" flared parts.
  2. Cut each piece a little more than half way around.
  3. Glue the pieces to the bottom of the barrel.
  4. The ramrod will clip into these when not in use.

A couple of notes:
Sharpen the inside of the tip of the barrel
with a file or some heavy sandpaper
to cut the potatoes cleanly and evenly.
Also, cut the ramrod long enough to leave the potato about
2 or 3 inches from the combustion chamber.

To fire the gun simply:

  1. Ram a potato into the gun as far as the ramrod will go.
  2. Close the ball valve and give a little shot from the spray can.
    (You may have to experiment a few times to find out just the right amount.)
    (Start with a very short squirt and work your way up.)
  3. Take aim and press the igniter button to fire the cannon.
  4. Whoop and holler. While this has absolutely no effect on the trajectory, it's really a lot of fun!
  5. Open the ball valve and blow lightly into the barrel a couple of times
    (like in the John Wayne movies). This forces fresh air into the combustion chamber.
  6. Go to step 1.

Build The Spudzooka (patent pending)
spudzooka.gif (18213 bytes)
Bazooka type gun
Plans still being written

Stay tuned more guns to come!

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