Built in two halves, which can then be glued together. For better stability three 3x14mm stainless steel dowel pins can be used.
CAD Model:
https://cad.onshape.com/documents/8922e0159d419d67c5dfd2d0/w/7d171f7d605f2f9d9f935399/e/ee5f0369eeba98e5c86b8b33?renderMode=0&uiState=64665229db455029303458bf
The author marked this model as their own original creation.