I was inspired to do this project because I wanted to learn to work in FreeCAD and I was looking for something useful that I could make that could be helpful to other people, so I am thankful to It's Triggy! for his amazing idea and inspiration! Hopefully this will be useful for someone. A parametric FreeCAD file is also attached where you can adjust any dimension you want (I tried to put most relevant ones into a spreadsheet there). His video: https://www.youtube.com/watch?v=SiWKmoLqlRg