Summary

Air tracks are useful to investigate straight-line motion.
Unfortunately professional air tracks are very expensive, so we tried to build a cheap one with some parts which are easy to find in any hardware store and some parts which can be printed with a 3d printer.

Print Settings

Printer Brand:

RepRap

                                            <p class="detail-setting printer"><strong>Printer: </strong>                     <div><p>Prusa i3</p></div></p>                                                                                <p class="detail-setting rafts"><strong>Rafts: </strong>                     <div><p>Doesn't Matter</p></div></p>                                                                                <p class="detail-setting supports"><strong>Supports: </strong>                     <div><p>Doesn't Matter</p></div></p>

Post-Printing

Air track video

            <div><p>A short video to show how we built it and how it works</p></div>                <p class="detail-video"><iframe src="//www.youtube.com/embed/ADl93EZXKMY" frameborder="0" allowfullscreen></iframe></p>

How I Designed This

Assembling instructions

            <div><p>Please read "Air track.pdf"  file.</p></div>

Air Track