These are two models, a superman positive and superman negative file. If you print it for a drinkcoaster, i would print the negative one. Cause that one provides more stability for your glass/cup.
I upload these superheroes drinkcoasters cause i use to have a hobby reading comics, and i still think them are cool.
I haven't printed these models (yet). But i have previewed them into my slicer (something i advice to do first before starting your print). And i have seen no problems with the detail.
Print it with a single or multiple color, with filament or resin..and show me what you guys have made of it (if you don't want to post a picture of your print it's totally fine)
Use this coaster to house your favourite drink.
This is a standard size coaster (100 by 100 by 5 mm), to fit in my coasterholder: