Video: How to Make Bare Wire End Stops

Special Content: Repraps for Education

This is part of a series of posts about starting and facilitating a project-based 3D printer club at a local elementary school, with the ultimate goal of replicating the program at schools everywhere. We'll be posting as many details as possible, including lesson plans and supporting materials. For more information about the entire project, including a listing of posts related to it, please visit the 3D Printer Club for Schools project page. 

In this video, Jacob shows an easy way to make very simple and inexpensive (yet dependable) bare wire end stops for your 3D printer (or other motion control project). This design helps to “demystify the box” by putting all of the switch mechanics in plain view, making it very easy to understand. We’ve had a printer with end stops just like these running without incident for over a year.

Our original “One-Penny Bare Wire End Stop” can be found here, but you can see from the video that we’ve changed the way we do it slightly: http://www.thingiverse.com/thing:23878

Supplies used: Old network cable, paper clip, end stop holder, electrical tape, solder, and about 2 cm of solid copper wire. Tools used: Wire strippers, small triangular file, needle-nose pliers (with wire cutter), ruler, soldering iron or gun, and scissors.

Music: “Crosstalk (Take 3)” by Javolenus, 2013 – Licensed under Creative Commons Attribution Noncommercial (3.0), http://ccmixter.org/files/Javolenus/41845

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