This project will take about 8 hours. It doesn’t need to be done all in one sitting. Enjoy and take your time.
Step #1: Next
- 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: Next
- 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: Next
- 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: Next
- 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: Next
- 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: Next
- Layout (Picture 1)
- Glue the two pieces shown. (Pictures 2 and 3)
Step #7: Next
- 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: Next
- Glue the whole piece into the center piece.
Step #9: Next
- Glue together as shown in picture 2.
- Glue whole piece into main piece.
Step #10: Next
- Glue bushing & small piece into top of X piece. (Picture 2)
- Glue the next handle. (Picture 3)
Step #11: Next
- 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: Next
- Glue small piece into end of T (Picture 1).
- Glue pieces as shown (Picture 2).
- Use PVC tape for all screw fittings.
Step #13: Next
- Other end.
- Glue piece into PVC.
- Screw pieces in as shown. (Pictures 2 & 3)
- Remember to use PVC tape.
Step #14: Next
- Continue with end assembly.
- 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.