Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:6030899.
This is an indoor golf disc that works well as a putter. It is about 75mm in diameter and weighs about 11 grams in PLA. It's over 14mm high which makes it slow. It is reliably understable. It doesn't work very well outdoors.
This disc is also found in the Disc Library here: https://smalldiscgolf.org/disc-library/#lofter where you can also download this .step file and the .step files for other small golf discs for indoor and outdoor use. This particular disc, the Flexie, is pretty much only useful indoors.
Here is a page with full details about how to print this disc: http://smalldiscgolf.org/printing-discs/
This disc model includes a print base which is like a raft except that it overlaps the disc itself. You break or cut the print base off after the print is done and you can sand away any remnants of it. The print base is required so that the disc can be printed on its edge.
Here is a page where you can learn different ways of throwing small golf discs: http://smalldiscgolf.org/throwing/
Here is an owner's manual for PLA small golf discs: https://smalldiscgolf.org/pla-owners-manual/
You can find out more about small disc golf here: https://smalldiscgolf.org
There is a video specifically about printing golf discs here: https://youtu.be/MtcKEJuvH1w
This disc model and all of the ideas and 3D models contained in the smalldiscgolf.org web site have been released under a creative commons CC0 license, which means you can freely use these models any way you want.