This is a small (5cm/2 inch) cup that can be easily stacked.

Be aware that the wall is in the model, so you can just print with the default slicing settings. It should be easy enough on any printer.

I've included my Blender 3D file. It should be very easy to modify it if you wish!

If you print it share a picture!

Print with default slicing settings... should be ok! No support needed. I do recommend using a raft because it could be hard to detach from your platform otherwise...