thingiverse
###Coasters
StackableCoasters_Coaster
StackableCoasters_Coaster_SingleGroove
StackableCoasters_Coaster_MultiGroove
StackableCoasters_Coaster_NoHole
Print as many of the coasters as you like. By adding some color to the coasters you can prevent mixing up the drinks.
There's also a “SingleGroove” and “MultiGroove” design which should be able to catch the fluids even better and prevent them from dripping through the center hole onto your furniture.
I use a similar design in my household and haven't had much issues with the hole in the center of the coaster, yet.
Howerer, there's also a “NoHole” version of the coaster. They are still stackable but you can't use the base with this version.
These coasters are large enough to hold a glass with a bottom diameter of up to 84mm. Feel free to scale it up or down.
###Base
Stackable_Coasters_Base_4C
Stackable_Coasters_Base_6C
Stackable_Coasters_Base_8C
These bases can hold up to 4, 6 or 8 coasters.
Direct link to the original creator's page
Click the "View on thingiverse" button above to visit the original model page on thingiverse. You can download the STL file directly from the creator's page for free.
This STL file is compatible with most FDM 3D printers (Creality Ender 3, Prusa MK3S+, Bambu Lab, etc.) and resin printers (Elegoo, Anycubic). Check the original page for recommended print settings and materials.
Yes, this model is available as a free download on thingiverse. Some creators accept tips or donations.
Most STL files can be modified using free software like Blender, TinkerCAD, or Meshmixer. Check the license on the original thingiverse page to see if modifications are permitted by the creator.