The Mitxela Precision Clock is a fantastic little kit, building a very precise GPS controlled clock. These are little 3D printed spacers you can use in place of the wooden spacers that come with the kit.

The wooden spacers that come with the kit require you to carefully glue them together, lining up the stacks. If you aren't careful, like I wasn't, the stack doesn't fit right, and requires filing and sanding to make work. These little spacers, on the other hand, fit almost perfectly.

There is some variance in the thickness of the digits the kit comes with, so if you want a tighter fit, download and edit the step file, or copy and edit the onshape file. The default thickness is 10.5mm. The LED holes are counter-sunk so that the tip of the LED just barely pokes out the front surface, increasing the viewing angle. You should insert the LEDs into the indicators before soldering them to the board, so you can adjust the fit