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Extreme Marshmallow Cannon

These are complete directions on how to put together the Extreme Marshmallow Cannon. Some steps will require 2 people.

Extreme Marshmallow Cannon

This project will take about 8 hours. It doesn’t need to be done all in one sitting. Enjoy and take your time.

Steps

Step #1:

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  • Parts
  • Make sure you have everything you need.
  • Cut pieces are not pictured. You will cut these yourself.
  • PVC pipe joints need to be twisted when gluing them together. It makes a better seal. However, there are a few spots where twisting can't be done.

Step #2:

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Extreme Marshmallow Cannon
  • Cut PVC as directed.
  • 4 - 1 1/2" x 2 1/4"
  • 1 - 1 1/2" x 6 1/2"
  • 1 - 1 1/2" x 10"
  • 1 - 1 1/2" x 3 7/8"
  • 1 - 1" x 2 1/2"
  • 1 - 1" x 2"
  • 3 - 3/4" x 1 1/2"

Step #3:

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  • Lay out pieces to make sure you have everything.
  • Dry-fitting the entire project is a great idea. Some pieces may need to be sawed down to fit correctly. Lining up the handle can be tricky.
  • Draw guide marks. These will help you know when you've pushed the pipe in far enough, and keep it level.
  • Picture 2 shows an example of guide marks.

Step #4:

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  • We will be starting with the bottom and working upwards.
  • Remember: PVC glue dries VERY fast.
  • You will spread PVC glue around the short pieces and inside the shaped pieces.
  • Push and twist together. Make VERY sure that they are all level. If they are not level the rest of the pieces will not fit.
  • Quickly after/while inserting the pieces we laid it flat on the table and pushed it flat. This makes sure the whole base is level.

Step #5:

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  • Using the same method -
  • 1 1/2" x 12" one on each side.
  • 1 1/2" x 6 1/2" in the center.

Step #6:

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  • Layout (Picture 1)
  • Glue the two pieces shown. (Pictures 2 and 3)

Step #7:

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  • Layout
  • Glue a piece 1 1/2" x 10" into the two T pieces. Set aside.
  • Glue together part of the handle. (Picture 1)
  • Glue the two together.

Step #8:

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Extreme Marshmallow Cannon

Glue the whole piece into the center piece.

Step #9:

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  • Layout
  • Glue together as shown in picture 2.
  • Glue whole piece into main piece.

Step #10:

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  • Layout
  • Glue bushing & small piece into top of X piece. (Picture 2)
  • Glue the next handle. (Picture 3)

Step #11:

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  • Glue small piece into small elbow. (Picture 1)
  • Glue elbow into end of handle. (Picture 2)
  • Glue T piece into both small pieces. (Picture 3)

Step #12:

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  • Glue small piece into end of T (Picture 1).
  • Layout
  • Glue pieces as shown (Picture 2).
  • Use PVC tape for all screw fittings.

Step #13:

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  • Other end.
  • Glue piece into PVC.
  • Screw pieces in as shown. (Pictures 2 & 3)
  • Remember to use PVC tape.

Step #14:

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Continue with end assembly.

Step #15:

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  • Before and after paint
  • Put a 12" piece of PVC into the top. This is where the marshmallows will be loaded and fired.
  • You will need to solder wires from the sprinkler valve, switches and extra wire to battery pack. Hide battery in Altoids can.
  • One switch is your safety, the other is the firing switch.
  • Load marshmallow. Pump with bike pump to 30 PSI. Flip your safety off and fire. The marshmallows will go far, so make sure you have a safe area to shoot them.
  • WARNING: Only pump the air cannon to 30PSI. Any more could result in damage to cannon or yourself.
Joe Hudy

Joe Hudy

I am 16 years old and I am a maker. I have made a air cannon that I got the opportunity to shoot with President Obama. I have also made two Arduino kits that are currently in the Maker Shed and they are called the 3x3x3 LED Cube Arduino shield and the SMD LED Arduino shield. I am currently working on 3D scanners.


Comments

  1. Joe Hudy says:

    yes i can :) . all you have to do is take 2 9volt battery clip’s and positive to negitive and then you van just connect the led’s of the valve witch ever way you want.

  2. Joe Hudy says:

    @krstnmullet they are 12 inches.

  3. Julie Hudy says:

    Mceds1 that sounds cool. I really have no idea – I haven’t made a smaller one. Sow a picture when you’re done, I’d love to see it. ;)

  4. Julie Hudy says:

    No question is stupid. The bike valve came from Home Depot.

  5. o v o says:

    Hello, we tried to make this project and the proportions of the canon do not seem to be like the one in your diagrams. The 12 inch pipes are too small, it seems as if we need at least four more inches to be able to connect the base of the structure to everything else. Help please?????