parametric bottle collar

I have some 5-gallon water bottles that I rotate in order so that I don't end up with one of them with ancient, stale water. I designed these round collars to act as markers for the bottles. They are parametric so that they can be used for various other things (wine bottles, pill bottles, street potholes.... You can change elements of the sizes as well as the text. There is an optional cutout wedge of your choice of angle. That can be helpful if you want a snug fit but have to get past some kind of bulge when putting the collar in place. Size, positioning, and spacing of the text is best done by trial and error. For my use case, the font didn't matter, but in general fixed width fonts are easier to work with here. The text placement function assumes all characters, including space, are the same width. Even though I rendered the collar and the text in different colors, the STL exported from OpenSCAD will be all in a single color. Most contemporary slicers make it easy (if someti