K'nex Landmine




Shoots White Rods

From https://www.instructables.com/id/ECUWRX2OCAEWZ990BV/ by You and Moded it

In the video, I know the mines are there, I dont know if you can see the white rods shoot, but its still a good thing. Some one walked in my room and I could tell because I heard the things shoot

Step 1: What You Need

This is a simple design

you need (for one mine only and no cannon (cannon later)):
48 green rods
24 green connectors
9 white connectors
8 yellow connectors

This is the design, that is 1 mine

all the green connectors have a green rod at both ends of them

Notice that one of them has the extra white connector (this is for the top)

Step 2: Connect It All

Connect the tips of the spirals with the top white connector

Step 3: Making the Gun

You need 3 more white connectors for the gun
7 grey connectors
1 yellow rod
1 blue rod
2 white rods (it fires a white rod)
2 orange connectors
1 elastic band

follow that design

Step 4: Connect the Gun Back to the Main Mine

the Yellow rod that is in the white connectors should be at 9:00 and the green rods that go into the white connectors should be at 12:00 and 6:00

Step 5: Connect the Gun Back Into the Main Mine

Connect the white connector back into its original position

The top green connector should be at 12:00
The yellow rod should be at 9:00
the bottom green connector should be at 6:00

Step 6: Insert String

Insert some string into the white connector at the top of the mine

Then tie a knot to the grey 1 slot connector that is attacked to the white rod

This rod will be facing down
when the string is pulled, the string will pull the conector, pulling the white rod, pulling the connector that is connected to the white rod, that releases the firing rod and fires the rod

Step 7: Make Another One of These, and Plant

There are 2 set up

Its good at night, no one will suspect it



    • Classroom Science Contest

      Classroom Science Contest
    • Fandom Contest

      Fandom Contest
    • Pets Challenge

      Pets Challenge

    38 Discussions


    7 years ago on Introduction

    this is cool i might mod it to have more barrels and make it shoot nerf darts


    10 years ago on Introduction

    i just built this bad boy and my mom thouhht it was a hat so im like no n dont pick it up its loaded!! luckily she didnt. ;] ...great instructable though i like it alot...you can make this smaller where u have a long screw driver taped to basicall just the gun...and paint it camo. then have the wire just connected to where u would normally tie it to the gun..therefor its just a lot smaller and harder to see if u were to use it in say airsoft or something of that sort.


    10 years ago on Introduction

    I have an idea: you should make a design with multiple barrels, make a true trigger, dig a hole in the ground, cover it back up with dirt - leaving the very ends of the barrels exposed, and when someone steps on the trigger it will release the pins on all the barrels and shoot straight up.

    4 replies

    10 years ago on Introduction

    whats funny too is that you attach the rope on a door so when he/she opens the door,it shoots at him/her


    10 years ago on Introduction

    Lol video is funny =P
    she goes through it and when it shotts she goes back =P


    12 years ago on Introduction

    do you know what landmine means??? it means that if you step on it it will go off but nice desgin