This is fun, safe, creative to have some fun with your siblings using Marshmellows!
This is a cool design that takes up to 3 hour to do but its worth it.
IF the steps are at all confusing look at the pictures or watch the youtube video that will soon be add below this text.
Step 1: Step 1 Buying Parts
1 3/4" Cross, 3 3/4" T's, 2 3/4" Couplings, 2 3/4" 90 degree elbows, 1 3/4" Cap, 6 3/4"45 degree elbows. 3/4 inch diameter PVC 50 inches long.1/2 inch diameter bendy PVC 20 inches long.
Step 2: Step 2 Making Scope
Grab 1 T and connect two pieces of the 3/4" diameter PVC cut into two pieces of 3.5" to each side followed by two couplings to each side leave the bottom alone for now. Now grab the 3/4" diameter PVC and cut a 3.5" piece off and connect it to the bottom.
Step 3: Step 3 Shoulder Holder
You will need 4 45 degree elbows 2 90 degree elbows and 33.5 inches of the 3/4" diameter PVC. You want to cut the 3/4" diameter PVC into a 7" piece, 9" piece, 10" piece, 2" piece, 12" piece, 1.5" piece,2" piece, and another 2" piece. First, grab a 45 degree elbow and place a 2" PVC piece to the top and connect a 7" one to the bottom followed by another 45 degree elbow. Now connect a 10" PVC piece to the bottom 45 degree elbow that was connected to the 7" PVC. Next, connect a 90 degree elbow so that the unconnected side is facing upwards. Now connect a 2" PVC piece to the other side of the PVC Followed by another 90 degree elbow make unconnected point left. Connect a 9" PVC piece to the unconnected side of that 90 degree elbow followed by a 45 degree elbow pointing up. If you are confused look at the sketch above. Connect a 1.5" piece to that 45 degree elbow and place another 45 degree elbow and make it facing up also. Finally Connect a 2" piece to the top of that last 45 degree elbow.
Step 4: Step 4 Main Air Tube/Final Assemble
For this part you will need to cut your remaining 3/4" diameter PVC into a 9" piece, 6.5" piece, 3.5" piece, 3.5" piece, 2" piece, and another 2" piece. You will also need the Cross, 2 T's, and 2 45 degree elbows. On the left side of the cross connect a 9" piece and on the right connect a 6.5" piece. Next, grab a T so that the long side is facing down connect the 6.5" piece that you connected to cross into the left side of the T and the right side connect a 3.5" piece. following that grab another T and connect the left side to the other side of that 3.5" piece. On the right side of the second T connect a new 3.5" piece. connect the left side of the 45 degree elbow to the 3.5" piece so that the other side is facing up. Connect a 2" piece to the other side. Finally grab another 45 degree elbow and make it so that one side is facing to the right and connect the other side to the 2" piece, Remember if you are confused look at the image above.To end connect a 2" piece to the end of the last 45 degree elbow. Now grab the 1/2 bendy PVC pipe and stick it through that whole contraption so that it is sticking out both sides. Now to connect the scope and shoulder holder. Grab the scope and connect the 3.5" piece that is connected to the bottom of the T to the top of the cross. You can cut the the scope shorter if you want. Now to connect the shoulder holder. Hold the piece so that the 90 degree elbows are on the right. Now connect both of the open PVC pieces to the bottom of the 2 T's of the Main Air Tube. Now for the vertical grip. Cut a 7" piece from the 3/4" diameter PVC and put a cap t one end and connect the other end to the bottom of the cross and you have made your own DIY Marshmello Gun.