This coaster can be printed using a single-color printer. It is easy to assemble and disassemble. Simply place the ring onto the water part and slide it 90 degrees. Repeat this step until all parts are assembled. Finally, rotate it 45 degrees to ensure that it stays together.
 

Printing:

• 1x Water and 4x Ring for one full assembly
• No supports needed.
• Use “complete individual object" when printing more than one ring piece at a time