Junkion lead screw based 3d printer

This is a challenge my daughter and I made to create a 3d printer entirely from scratch and without buying anything. All of the parts are custom so I don't expect this will work for many other people, but I was very pleased with how quite and reliable this machine turned out to be. We had to use a lead screw on the Y axis because it's what we had and because the bed weighs about 4lbs, but with proper oiling and isolation between the aluminum parts, it's about the same volume as a Prusa MK2. No