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How to make rubber band gun

Category: DIY weapon / DIY guns

How to make rubber band gun

Rubber band minigun

difficultyDifficulty: ★★★☆☆

timeTime: About 2 hours

ScrapFrom scrap: ████████░░ 80%


PreamblePreamble

Make rubber band minigun is easy, but it will took too many time to reload it =) But you can't even imagine feelings of attacking your target with 336 rubber bands in just a few seconds! In the end of this topic you can find information about how this rubber band gun works, but now I want to show you how to make this crazy rubber band gun (or I should call it minigun).
So, 16 - barrels rubber band minigun!


MaterialsMaterials

  • 10 mm plywood
  • Metal or plastic rod (I have a stud with diameter of 5 mm)
  • Bolts, nuts
  • A wooden rolling pin or a cardboard tube from the roll of foil
  • Cardboard
  • Metal corners
  • The 100 gram pack of rubber bands =)
ToolsTools

  • Drill
  • Jigsaw
  • Glue
  • Screwdriver
  • Pliers

    How to make rubber band minigun


    Barrels


  • Step 1

    My homemade rubber band gun has 16 barrels, each of them is a wooden slat with 600x10x20 mm size. I cut them of plywood
    You can use a 10x20 mm wooden slat, just cut it to 600 mm pieces

    How to make rubber band gun

  • Step 2

    In the one edge of each barrel make a slot with depth 10 and width of 13 mm, this big slot is for hooking rubber bands
    How to make rubber band gun

  • Step 3

    Now in the upper surface of slat make 21 or more slots for another mount of rubber bands, with distance between them less than 10 mm.
    Treat all corners with sandpaper!

    How to make rubber band gun

  • Step 4

    Make 2 discs with 120 mm diameter of plywood (for 16 barrels)
    If you are making rubber band minigun like the mine one, just border a DVD (it is 120 mm)

    How to make rubber band gun

  • Step 5

    Make 16 slots round disc with width and depth of 10 mm for each barrel
    How to make rubber band gun

  • Step 6

    Attach barrels in their slots in disc with glue for wood
    How to make rubber band gun

  • Step 7

    Make a holes in the middle of discs with diameter of your shaft (mine is 5 mm)
    How to make rubber band gun

  • Step 8

    And place shaft inside holes
    How to make rubber band gun

  • Rubber band minigun's frame


  • Step 9

    Make П-shaped frame of plywood with width of 650 mm, drill two holes for shaft
    You can use two bolts instead of one long shaft

    Insert a shaft inside holes in frame, all barrels must revolve without rubbing
    How to make rubber band gun

    How to make rubber band gun

  • Step 10

    Now it's time for cylinder, and first we need a frame for it. Make a rectangle frame of plywood and attach it to П-shaped frame with metal corners. So make a prop (now shown on picture, but you will se it in photo)
    How to make rubber band gun

  • Remark

    All 21 slots must be seen in frame's hole from view from above!
    How to make rubber band gun

  • Step 11

    Drill two holes and insert a shaft for cylinder
    How to make rubber band gun

  • Step 12

    You can use a rolling pin, but I used a cardboard tube from the roll of foil with two circle caps of plywood with holes in them
    How to make rubber band gun

    How to make rubber band gun

  • Step 13

    Make a frame for drive mechanism and attach it to cylinder's frame with metal corners
    How to make rubber band gun

  • Step 14

    The drive mechanism of rubber band minigun is a belt drive, the belt is strap from sneakers.
    How to make rubber band gun

    How to make rubber band gun

  • Step 15

    Drive wheel is made of plywood too. Attach two circle pieces of cardpaper with bigger diameter to both sides of drive whel. It will prevent a strap from jumping off from wheel.

  • Step 16

    Outer surface of drive wheelis covered by sandpaper for best friction with strap. Cylinder is covered by sandpaper too, in the side where a strap will be.

  • Step 17

    Also drive wheel has a handle to spin it by hand.
    How to make rubber band gun

  • Reloading of homemade rubber band gun


  • Be shure you have enough bands

    How to make rubber band gun

  • Loading

    Attach a thick thread to the barrel. Wind thread from the first slot to the last, through the all of them, by spiral. After this, attach free end of thread to cylinder. Closely look at the next photo.
    Now it's time for stretching rubber bands. Hook one end of rubber band in the barrel's nose slot and stretch it to the first, nearest to nose of barrel. Push it inside. Take second rubber band, hook it in barrel's nose slot (near the first rubber, yes) and stretch to the second slot, push inside. Continue while all of 21 slots will filled by rubber bands. Do it again for all 16 barrels, from first to last slots.
    How to make rubber band gun

  • How rubber band minigun works


  • Scream! Aim! Fire!

    Spin the drive wheel by handle. Revolving will transmit to cylinder (because of belt drive). Cylinder start to spin and wind a thick thread on itself. Thread start to leave the last slot and pull last rubber band out. Rubber band will completely left slot and this is a first shot. Right in this time thread start to leave another slot and pull another rubber band out. Process continues until all 336 rubber bands will been shot.
    How to make rubber band gun more precision and increase rapidness of fire? Pretty simple. Use an electric motor instead of handle on drive wheel. But careful. Such rubber band minigun will be a really mad device for jokes =)

VideoVideo

And here you can watch how diy rubber band minigun is working

ResultsResults and tips

  • Mad rapidly of fire
  • Experiments shown that this beast is able to shoot more than 20 rubber bands per second (!!!)
  • Indispensable device for jokes.
  • Escape with this rubber band minigun after joke is not so easy
  • Number of barrels in this design is not limited, such as their length
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