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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.

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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.


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