The fusion file is provided would you want to adjust the tolerances, see how it's done or simply edit the model easily.
Printing Information:
Everything should slide easily together, make sure to remove the brim cleanly to avoid interference. The fit of the base with the top was left loose so that you can easily remove the top, if not wanted you can glue those pieces together or reduce the tolerances in the fusion file.
All credits go to the original author as my changes aren't that significant
The author remixed this model.
I quickly remade the model in fusion360. I scaled the model and made slight changes to remove the need for supports. I also changed the ways everything connects to reduce the need for glue or at least improve the connection.