This dove tail connection can be used for bridges that need to be removable for a model train track. Or other items that need to be removable and where it is important that the pieces always fit at exactly the same place.

Once printed, use sandpaper (fine grit) to smooth the surface of the dove tail. This helps to smoothen the friction between the 2 parts as the layers of the printer may proof to be troublesome.

I have a 0.2 nozzle.

Enjoy using it.