Summary

Do you need cheap simple led rings/gates for your races?

Vitamins

PA Nylon Tube Pneumatic Air (10mm external diameter), for a big loop you need about 2 meters (so order 2 pieces of 10x7): https://ebay.us/KynD1p
EL strip with battery power supply (order 3 meters of the color you like, you need only 2 but you can cut it, or double loop it): https://s.click.aliexpress.com/e/_dUkZGJn

A perfect addition for your new rings, a PIDTimer:
https://www.thingiverse.com/thing:4228550

Print Settings

Printer:

HICTOP Prusa i3

                                            Rafts:                      
No

Supports:

Yes

                                            Resolution:                      
0.2

Infill:

                    
                        Notes:                     The supports are not required but highly recommended. Reduce the angle of support to 40 degrees.

The hole in base_tighter.stl has a diameter of 10.5 mm that fits tight.