How to Make a Hidden Blade

Get a BIC pen and a click pen. Remove the spring from the click pen and take apart the BIC pen. Then, take the gray ink chamber lip off and put it on backwards. Now, put the spring in first then the ink chamber head first. All you have to do is push it in and it pops out.

Teacher Notes

Teachers! Did you use this instructable in your classroom?
Add a Teacher Note to share how you incorporated it into your lesson.

Be the First to Share


    • CNC Contest

      CNC Contest
    • Teacher Contest

      Teacher Contest
    • Maps Challenge

      Maps Challenge

    8 Discussions


    8 years ago on Introduction

    you may want to elaborate on this a little bit, as I am a little unsure on how this 'works' maybe doing a steb by stem, with pictures so people can see it?

    4 replies

    Reply 8 years ago on Introduction

    k, but im ashamed to say that i dont know how to do a step by step so i put it all on one step.


    Reply 8 years ago on Introduction

    Don't be ashamed... when you click 'step by step' instructable, you get the same sort of setup for the one you got to make this one... to make extra pages you click 'insert new step' It could be worth just having a play arround with it. If you get stuck let me know and I'll see if I can help :)

    To ask may bring a moments shame, not to ask will bring a lifetimes- Judo saying