Just print each piece once and you'll have a traditional 28 set of Dominoes. As pictured, I printed at a layer height of 0.2mm, and did a filament change at layer 41 (8.2mm). If you don't want to use multiple filaments, you could try filling the dots and dividing line with paint or an epoxy. All the edges are rounded, so they should be easy to remove from your print bed. In case you don't know all the different ways you can play, here are the rules.
Good Luck!
Edit April 6, 2020
I just added a domino holder to view your tiles while playing. It's a little oversized on the X-axis, so I recommend scaling down to 90% and keeping Y&Z at a 100% to get the dimensions as pictured above. Note that it can hold a total of 8 dominoes sideways. However, you can fit 8 across the top row alone, and 4 along the bottom and still see everything. If you print 2 of them, they stack together to form a cube shape for storage.
I am in the process of creating a storage case for the dominoes, and I will upload it once I have printed it out to ensure everything fits properly.
| dominoes_0-0.stl | 504.2KB | |
| dominoes_0-1.stl | 664.4KB | |
| dominoes_0-2.stl | 824.7KB | |
| dominoes_0-3.stl | 985.0KB | |
| dominoes_0-4.stl | 1.1MB | |
| dominoes_0-5.stl | 1.3MB | |
| dominoes_0-6.stl | 1.4MB | |
| dominoes_1-1.stl | 824.6KB | |
| dominoes_1-2.stl | 984.9KB | |
| dominoes_1-3.stl | 1.1MB | |
| dominoes_1-4.stl | 1.3MB | |
| dominoes_1-5.stl | 1.4MB | |
| dominoes_1-6.stl | 1.6MB | |
| dominoes_2-2.stl | 1.1MB | |
| dominoes_2-3.stl | 1.3MB | |
| dominoes_2-4.stl | 1.4MB | |
| dominoes_2-5.stl | 1.6MB | |
| dominoes_2-6.stl | 1.7MB | |
| dominoes_3-3.stl | 1.4MB | |
| dominoes_3-4.stl | 1.6MB | |
| dominoes_3-5.stl | 1.7MB | |
| dominoes_3-6.stl | 1.9MB | |
| dominoes_4-4.stl | 1.7MB | |
| dominoes_4-5.stl | 1.9MB | |
| dominoes_4-6.stl | 2.1MB | |
| dominoes_5-5.stl | 2.1MB | |
| dominoes_5-6.stl | 2.2MB | |
| dominoes_6-6.stl | 2.4MB | |
| domino_holder.stl | 3.1MB |
