That's perhaps the best model of this kind. It took me some time to find the right one and I wasted filament printing clips that turned out to be not very useful after all. All other models I've tried are overengineered, not practical to use, or unreliable. This one works perfectly and is as simple as it could be.

I've used BL PETG-HF Gray, but I've made no changes to the print profile. It printed well and relatively quickly.

It took forever to print, but it was unavoidable. Some stringing, but is not even worth removing them as the result is still beautiful.