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How to Make a Marshmallow Blow Gun out of PVC Pipe

October 13, 2013 by Sarah 36 Comments

Love this post? Then pass it on!

One project that I had seen on Pinterest for ages but never tackled with the boys was marshmallow blow guns made out of PVC pipe.  Well, I showed the idea to the boys, and they enthusiastically agreed that we should go for it!

Constructing a marshmallow blow gun from PVC is super easy, and you can rebuild them in all different ways.  This would definitely make a great project for a scout group, church group, or after school club, or just as a family activity!

Make a marshmallow gun out of pvc pipe

For each gun, we purchased:

  • 1/2 inch diameter PVC pipe.  You will need 27 inches for each gun, although this doesn’t need to be exact.  A little more or less will be fine.
  • Two t-shaped joins
  • Two elbow joints
  • Two caps

**Note:  While you’re shopping, make sure that the joint pieces do not have threading inside the pipe!

I used a hand saw to cut the pipe to the lengths we wanted.  We did five 3-inch pieces, one 5-inch pieces, and one 7-inch piece.

Then we assembled the pieces like this:

Make a marshmallow gun out of PVC pipe

But you can switch them around, like this:

How to make a marshmallow gun out of pvc pipe

 Or this:

Make a marshmallow gun with pvc pipe

Or this:

Make a marshmallow gun with pvc pipe

To shoot, simply stick a mini marshmallow in the end of the gun and blow!  The amount of air power is important.  Aidan thought that his gun wasn’t working too well, but Dad got it to shoot really far.  After experimenting, Aidan was able to shoot much better.

Aidan decided that he wanted to keep the same design for his gun, and he wanted to decorate it with duct tape.  So we added a little camo duct tape to the pipe pieces.  We didn’t do anything with the joints, but you could easily spray paint those.

Make a marshmallow gun out of PVC pipe

I would definitely recommend playing with these outside unless you don’t mind ants!  The boys did a little shooting inside, but it was almost impossible to keep up with the mini marshmallows.  I’m sure there are still some we missed…  Outside at the park was a much better spot for playing!

Make a marshmallow gun out of PVC pipe

It’s amazing how many homemade toys can be made with PVC pipe!

  • PVC Nerf Dart Popper
  • PVC Toy Swords
  • Build your own PVC backyard play sprinkler

Filed Under: Ages 5-7, Ages 8-10, Family Fun Tagged With: Things to Make

« Candy Corn Catapults! (Four ways to build a catapult out of items from around the house!)
Jack O’Lantern Playdough Faces »

Comments

  1. Grace says

    November 24, 2014 at 11:10 am

    I bought some on Etsy and they are sooo much fun! I bought one for each of my kids and one for my husband too! I think my hubby has just as much fun with it as the kids do (if not more) lol. What a fun & unique christmas gift or birthday gift!
    https://www.etsy.com/listing/204577606/camo-marshmallow-shooter-gun-launches?ref=shop_home_feat_1

    Reply
  2. Peggy says

    November 28, 2014 at 10:45 am

    Which style of gun works best? I’m making these for adults. You show two styles so I wanted to know which style you would recommend.

    Thanks

    Reply
    • Sarah says

      November 29, 2014 at 8:07 am

      We built both out of the same pieces, and I think they were pretty equal. My husband was able to shoot much farther than the kids, so I think adults will have fun with these! 🙂

      Reply
  3. Christian says

    December 12, 2014 at 4:11 pm

    About how much does it cost to build each one?

    Reply
    • Roberto Toffoletti says

      December 22, 2014 at 11:12 pm

      I just bought the materials at Home Depot for 3 guns and spend about 9.50 so about 3 dollars a piece

      Reply
      • Dylan says

        July 14, 2015 at 5:25 pm

        that’s about right…

        Reply
  4. heather M says

    January 19, 2015 at 10:12 pm

    Did the duck tape interfere with the joints attaching or should we end the tape before the joint? thanks so much! making these for my son’s birthday party

    Reply
    • Sarah says

      January 19, 2015 at 10:18 pm

      We ended the tape before the joint. I think it would get too sticky if you tried to attach the pieces with tape overlapping. I hope it goes well!

      Reply
  5. shwath says

    January 8, 2017 at 11:06 am

    Nice job. It’s nice to see that kids are finally getting into engineering. The blaster in the first picture is pretty good. What I would do is add a PVC barrel before pipe.

    Reply
  6. Ninh Nguyen says

    July 10, 2017 at 4:54 am

    You can refer to PVC tube models for your house here: https://cucphuong.com.vn/ong-pvc-va-phu-kien-pvc-dismy-s16

    Reply
  7. Janyce Miller says

    August 6, 2017 at 4:26 pm

    These look like such fun… For the camo duct taped one, did you apply the tape prior to or after putting the piping in the joins?

    Reply
  8. Akshat Gupta says

    August 18, 2017 at 8:14 am

    Thanks for sharing this is helpful 🙂

    Reply

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