This is an easy camera slider without motor for a Action Cam SJ4000. If you want to use a GoPro as Cam, then you have to edit the "cage" file.
Everything else you need is:
4 x M3 countersunk (20mm or 30mm)
2 x Ø 5mm ground wave (http://www.ebay.de/itm/Linearwelle-Prazisionswelle-5-mm-100-mm-gehartet-/160613375131?pt=Rohstoffe_Materialien&hash=item25654d9c9b)
4 x linear bearing brushes (http://www.ebay.de/itm/281456131804?_trksid=p2055119.m1438.l2649&var=580494302729&ssPageName=STRK%3AMEBIDX%3AIT)
diy_-_cameraslider_sj4000_ball_head.stl | 99.0KB | |
diy_-_cameraslider_sj4000_cage.stl | 9.3KB | |
diy_-_cameraslider_sj4000_slider.stl | 21.8KB | |
diy_-_cameraslider_sj4000_stand.stl | 21.8KB |