This is NOT a stand-alone GraviTrax accessory. It is designed to be used with the "Six-Shooter" turntable mod sold on the Coogelbahn.de webstore, along with a GraviTrax Turntable element. This "Machine Gun" mod expands the Six-Shooter's capabilities, to release an unlimited number of marbles slightly spaced apart.

The piece clicks onto any of the 6 entrances of the GraviTrax Turntable, after inserting the Six-Shooter mod on top of the turntable.

Link to the Six-Shooter mod on Coogelbahn.de ETSY store: https://www.etsy.com/listing/1260094758/sixshooter-gravitrax-turntable-addon

Link to the Six-Shooter mod on Coogelbahn.de store: https://www.coogelbahn-shop.de/en/startseite/60-turntable-addon-six-shooter.html

I print it oriented face down, with supports. PETG prints are good and solid. The piece clicks onto one of the turntable's entrances, so the print needs to have good self-adhesion, and be fairly robust to click on and off.

I have not yet tried to print with PLA, but a good quality PLA may also be acceptable.

Here's some videos:

https://youtu.be/XVISCayHgu0

https://youtube.com/shorts/Hn0pMJw6JDk?feature=share

https://youtube.com/shorts/86tX_Uv9sLM?feature=share