Marble track funnel

DIY marble track.6mm track goes faster but the marbles can get easy out of the track.10mm track gives more stability.You can combine the 2 sizes to creat fast and stable parts in the track.ENJOY!Needed to complete the track:1. suction cups with 5mm hole for example https://a.aliexpress.com/_EJXJdmI2. straws (ID 5mm OD 6mm) for example https://www.action.com/nl-nl/p/3000177/papieren-rietjes/3. Marbles with a diameter of ca 14mm