Optimized looping with slope

This is an optimized loop, its entry meticulously adjusted to the track's incline.

Consequently, propelling a ball through the loop is achievable using a standard rail and either 4.5cm or 5cm height stones.

With sufficient initial momentum, 4.5cm height stones suffice; 5cm height stones eliminate the need for significant initial velocity.

Meticulous sanding of the loop's track with sandpaper is crucial.

A standard version and a print-optimized version, open-topped, are available.

As the standard rail becomes incompatible with 5cm height stones, utilize the optimized 3-rail print instead (1mm longer than its counterpart).

Feedback regarding the model's printability and the balls' performance would be most welcome.

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