Knex Miter Saw

9,610

21

210

Introduction: Knex Miter Saw

About: On my page you'll find lots of different Knex projects, from ball machine lifts to useful items. I hope you enjoy!  _______________________ Current avatar: Target of my skeeball machine Past avatars...

This is a miter saw I built for a contest. The blade spins and can cut paper. The best part about it is that the blade guard lifts up automatically as you push the saw down, just like the real thing. Plus, it's huge, heavy, and uses lots of flexi-rods. :-)

Here's how it works; when you push the saw down, fishing line gets reeled out in the back. A shaft turns, which is geared up so another shaft spins faster. Another strand of fishing line is attached to this shaft. When one strand of fishing line gets pulled out, another gets pulled in at a faster rate. One strand goes through the base and up into the saw, going through many wheels (yes, this was very hard to put through the wheels). There's also rubber bands that help reset everything.

Here are the instructions!

Here is the complete parts list, plus deconstruction pictures!

Here's the video:



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

    Recommendations

    • Tiny Speed Challenge

      Tiny Speed Challenge
    • Spring Cleaning Challenge

      Spring Cleaning Challenge
    • Trash to Treasure Contest

      Trash to Treasure Contest

    210 Discussions

    0
    Shadowman39
    Shadowman39

    Reply 3 years ago

    Thanks man!

    0
    Shadowman39
    Shadowman39

    Reply 3 years ago

    Thanks!

    0
    CassisDude98
    CassisDude98

    7 years ago on Introduction

    I managed to rebuild this thing exactly including the blade guard!

    0
    dozer789
    dozer789

    7 years ago on Introduction

    Very nice design, Keep up the great work! 5/5 stars!

    0
    Shadowman39
    Shadowman39

    Reply 7 years ago on Introduction

    I don't have any white rods, I ran out of them on my current project. I bought 1000 from ebay, but I have to return them because they were dirty and discolored. :-(