VESA mounting plate

A generic VESA mounting plate, with both 75mm and 100mm mounting holes. I had a basic VESA computer monitor holder, and during moving my appartment, I lost the mounting plates on the right arm, so I designed one as I couldn't find any on the internet as its very cheap model, and you can replace it with new one :D I changed the internal solid infill pattern to “Concentric” to add more durablílty and stringth on the mounting holes, but I didnt try it without this change, you may skip it.