Behold, it's the coaster nobody ever asked for. 

The crowd favourite. It's BLOB-GLARE.

It's designed to be printed with a 0.4mm nozzle, 0.2mm layer height.

15 layers / 3mm thick, 100mm diameter. The perfect coaster size.

There's 3 variants available, each consists of 3 files, one per colour, named accordingly:

1. Single Sided:
   5 multicolour layers, 10 all-black layers

    

2. Doube Sided SwapSaver:

   10 multicolour layers in total (5 on the bottom, 5 on top), 5 center layers are all black to reduce swaps

    

3. Doube Sided Fullcolour:

   15 multicolour layers

Instructions:

• load all three files into your slicer at the same time
  • on the popup “Object with multiple parts detected, load as object with multiple parts” click YES – this way all parts stay aligned to each other
• add 3 different filaments in your slicer
• switch to the objects tab in your slicer and set the filament colours for each object separately
• for the best surface finish I recommend printing multicolour face down (the single-sided coasters will load face up, you will have to flip them, the double sided ones will always have one face down obviously)
  • to flip them: once you selected the filament colours click on the coaster, hit hotkey [F] (in ElegooSlicer and Orca) and click on the top surface. This will place the top surface to touch the plate, so face down.
• Set the colour order manually, to reduce swaps as much as possible. Mostly only relevant when swapping manually, without am multicolour system like the Canvas.
  • To set colour order manually (in ElegooSlicer and Orca): in the Prepare view click on “customize current plate” on the right hand side of the buildplate
    • Adjust First layer filament sequence and other layer filament sequence accordingly
      • for recommended colour sequence see images
      • With the single sided coaster you should end up at 10 swaps in total
• I recommend printing at 100% infill (or a total of 15 solid layers through bottom and top layer count)
  • PETG recommended, for some heat resistance, when setting a hot cup on them. PLA works too, but is more sensitive to temperature than PETG.