How to Make an Air Gun

Cut a spray bottle to make the handle.If your spray bottle has a molded handle, you can cut just below that., Trim the inside tube of the spray bottle down until it is flush with the cut edge., Drill a small hole in the bottom of a plastic water...

23 Steps 4 min read Advanced

Step-by-Step Guide

  1. Step 1: Cut a spray bottle to make the handle.If your spray bottle has a molded handle

    If your bottle does not have a molded handle, then cut just where it starts to widen, about 3 to 4 inches (7.62 to
    10.16 centimeters) down from the cap.

    Discard the bottom part of the spray bottle.

    If you can't find a spray bottle, use a small air pump instead, like the kind used to fill basketballs.

    Be sure to take the unscrew the top nozzle.If you'd like, you can wrap some colored tape around the bottom, cut edge of the spray bottle.

    This will add a little design, and hide any jagged edges.
  2. Step 2: you can cut just below that.

    You can also cut it just a little bit shorter too.

    This will prevent the tube from getting caught on anything. , The hole should be big enough for the nozzle of the spray bottle to fit though.

    You can drill the hole with an electric drill, a dermal, or even a pair of scissors.Make sure that your bottle has a sports cap.

    They are the kind that you pull to open, and push to close. , Twist the nozzle on the spray bottle until it is in the "open" position.

    Draw a ring of hot glue around the nozzle, then push the nozzle into the hole.

    Wait for the glue to set, then add more glue around the seam.

    You want it to be perfectly airtight. , Pull the cap open, and place a straw right over the opening.

    Draw a line of hot glue around the seam.

    Be careful not to get any glue inside the straw, or you may block the hole.

    You need to be able to push and pull the cap close/open.If you want something sturdier, you can use a short plastic or metal tube instead.

    You can also take a ballpoint pen apart, and use the body., You will eventually be pushing the circle hook over the top of your sports cap, so make sure it is big enough.

    The wire needs to be long enough to reach from the sports cap to the trigger on the spray bottle, plus extra. , Hold the small bottle firmly in one hand as you do this so that you don't accidentally break the gun apart.

    If you can't fit it, position it so that it sits comfortably on top of the cap, then secure it with lots of hot glue.Make sure that the end of the ring and the wire are pointing down. , Cut the popsicle stick in half, then use a folded piece of sandpaper to carve a U-shaped notch into one end.

    This ditch is important; it will act as a groove for the hook/lever. , The circle hook should rest comfortably in the groove you made earlier.

    If you'd like some extra security, you can tie the hook to the water bottle using zip ties. , Make sure that you can comfortably reach the loop with your forefinger.

    If the wire is too long, you may need to cut it.

    Twist the end of the wire around itself.

    This closes the loop and keeps it from coming undone. , If you are using the kind that are hallow inside, you can glue some toothpicks inside to make them more lethal.

    Only do this if you plan on being responsible; never shoot your toothpick bullets at another person or animal. , If the Q-tip won't slide into the straw easily, you'll either have to pull the cotton batting off, or cut it off with a pair of scissors.

    You can only load one Q-tip bullet at a time. , Simply squeeze the spray bottle trigger repeatedly.

    As the small bottle fills with air, the trigger will become harder and harder to pull.

    Once you can't squeeze the trigger anymore, stop. , If you made a trigger for it, pull on the metal loop.

    This will open the sports cap and send your "bullet" flying.If you didn't make a trigger, simply pop the sports cap open.

    The built-up air will push the bullet out, and send it flying!
  3. Step 3: Trim the inside tube of the spray bottle down until it is flush with the cut edge.

  4. Step 4: Drill a small hole in the bottom of a plastic water bottle.

  5. Step 5: Make sure that the nozzle of the spray bottle is open

  6. Step 6: then glue it into the hole.

  7. Step 7: Glue a straw on top of the sports bottle cap.

  8. Step 8: Wrap the end of some sturdy

  9. Step 9: metal wire around the bottom of a circle hook.

  10. Step 10: Push a circle hook over the sports cap top.

  11. Step 11: Break an L-hook near one of the screw holes to create a ditch.If you can't find an L-hook

  12. Step 12: or can't break one

  13. Step 13: use a popsicle stick instead.

  14. Step 14: Glue the broken L-hook under the water bottle

  15. Step 15: close to the cap.

  16. Step 16: Fold the end of the metal wire into a loop.

  17. Step 17: Cut some Q-tips in half.

  18. Step 18: Push a Q-tip

  19. Step 19: fuzzy-side down

  20. Step 20: into the straw.

  21. Step 21: Push the sports cap shut and pump the gun.

  22. Step 22: Aim your gun

  23. Step 23: and fire.

Detailed Guide

If your bottle does not have a molded handle, then cut just where it starts to widen, about 3 to 4 inches (7.62 to
10.16 centimeters) down from the cap.

Discard the bottom part of the spray bottle.

If you can't find a spray bottle, use a small air pump instead, like the kind used to fill basketballs.

Be sure to take the unscrew the top nozzle.If you'd like, you can wrap some colored tape around the bottom, cut edge of the spray bottle.

This will add a little design, and hide any jagged edges.

You can also cut it just a little bit shorter too.

This will prevent the tube from getting caught on anything. , The hole should be big enough for the nozzle of the spray bottle to fit though.

You can drill the hole with an electric drill, a dermal, or even a pair of scissors.Make sure that your bottle has a sports cap.

They are the kind that you pull to open, and push to close. , Twist the nozzle on the spray bottle until it is in the "open" position.

Draw a ring of hot glue around the nozzle, then push the nozzle into the hole.

Wait for the glue to set, then add more glue around the seam.

You want it to be perfectly airtight. , Pull the cap open, and place a straw right over the opening.

Draw a line of hot glue around the seam.

Be careful not to get any glue inside the straw, or you may block the hole.

You need to be able to push and pull the cap close/open.If you want something sturdier, you can use a short plastic or metal tube instead.

You can also take a ballpoint pen apart, and use the body., You will eventually be pushing the circle hook over the top of your sports cap, so make sure it is big enough.

The wire needs to be long enough to reach from the sports cap to the trigger on the spray bottle, plus extra. , Hold the small bottle firmly in one hand as you do this so that you don't accidentally break the gun apart.

If you can't fit it, position it so that it sits comfortably on top of the cap, then secure it with lots of hot glue.Make sure that the end of the ring and the wire are pointing down. , Cut the popsicle stick in half, then use a folded piece of sandpaper to carve a U-shaped notch into one end.

This ditch is important; it will act as a groove for the hook/lever. , The circle hook should rest comfortably in the groove you made earlier.

If you'd like some extra security, you can tie the hook to the water bottle using zip ties. , Make sure that you can comfortably reach the loop with your forefinger.

If the wire is too long, you may need to cut it.

Twist the end of the wire around itself.

This closes the loop and keeps it from coming undone. , If you are using the kind that are hallow inside, you can glue some toothpicks inside to make them more lethal.

Only do this if you plan on being responsible; never shoot your toothpick bullets at another person or animal. , If the Q-tip won't slide into the straw easily, you'll either have to pull the cotton batting off, or cut it off with a pair of scissors.

You can only load one Q-tip bullet at a time. , Simply squeeze the spray bottle trigger repeatedly.

As the small bottle fills with air, the trigger will become harder and harder to pull.

Once you can't squeeze the trigger anymore, stop. , If you made a trigger for it, pull on the metal loop.

This will open the sports cap and send your "bullet" flying.If you didn't make a trigger, simply pop the sports cap open.

The built-up air will push the bullet out, and send it flying!

About the Author

K

Katherine Allen

Specializes in breaking down complex crafts topics into simple steps.

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