I wanted a Vesa mount that would sit my 27" monitor as close to the wall as possible and could not find any at the store. I also had some holes on the wall from the previous one so I decided to design one that would fit my requirements.

For interfacing the two parts I used M5 bolts and hex nuts that I had laying around from spools of ESun ABS+ but you can probably get them from your local hardware store.

I printed it with ABS+, 4 walls and 35% gyroid infill, but this might be overkill. It feels so solid that I wouldn't be amazed if it can hold a 65" TV