Knex Grenade

A very simple, FRAGILE fragmentation grenade made of Knex pieces.

Knex Pieces needed (note: all pieces are CONNECTORS, NOT RODS)
6 white connectors
12 red/green/yellow/white connectors

Other pieces can be substituted for the ones listed above, but that's for you to decide. In addition, the basic shape of this grenade can be modified to suit the user.

CAREFUL while handling this grenade. Because it has weak connections between each individual knex piece, they separate easily and readily from each other, producing a nice "explosion." BUT the weak connections also cause it to be very fragile, so do handle it with care, or else it will "explode" in your hands.

Throwing of this grenade at a person's head/genital region or near a person's head/genital region can result in serious injury and/or excruciating pain. I will not accept any responsibility for misuse of this grenade resulting in injury and/or death.

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Step 1: Building the Grenade

This step is for those that need clarification. If you get how to build it by looking at the first picture, don't bother reading this step.

Very Simple:
Build each of the below parts and then just put them together.

Step 2: Have Fun!

If the last step was unnecessary, this step was just redundant.

Just a simple warning:
Before throwing the grenade (Let's hope you know how to do that), carefully think it through. When you've made up your mind to throw it, prepare for ownage, followed by a very annoying cleanup.

Have fun!

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    23 Discussions

    Nice. My only problem with these sorts of things is they dont "explode" they shatter. In truth there are very few "explosives on this site or anywhere for that matter.


    11 years ago on Introduction

    nice grenade!!! funny to throw in sis bedroom at night =P
    nice instructable


    11 years ago on Introduction

    i like this cause it explodes rather then shooting out a bunch of rods out of weak harder to reload mini gun things


    11 years ago on Introduction

    oh s*!t,i dropped it and exploded!!! so coooool,thanks alot. it really works,but it's fragile,so be carefull. do you know about this? it's very usefull in nongrenade builds


    11 years ago on Introduction

    you might not of, but it looks like you copied this idea off of the halo plazma grenade. just a guess

    5 replies
    xiao hawkthebboy

    Reply 11 years ago on Introduction

    How does it look anything like the halo plasma grenade? I just built this accidentally when I was fiddling around with some knex pieces trying to figure out how to make a working "grenade."

    xiao hawkthebboy

    Reply 11 years ago on Introduction

    If anything, it's more like a frag grenade than a plasma (That explains its name). Besides plasmas stick, while frags just make a huge explosion. This one is more like the latter than the former.

    thebboyxiao hawk

    Reply 11 years ago on Introduction

    ya i know but the way that you stick the green connectors into the snnowflake ones is the same way that you do for the plasma grenade made out of knex

    xiao hawkthebboy

    Reply 11 years ago on Introduction

    Oh you were talking about a plasma grenade out of Knex! Okay, now we're on the same page. I thought you were just talking about the original plasma grenade from Halo.