Others can correct me if I’m wrong, but PLA the plastic itself is food safe. As in, you can put it in your mouth and it’s fine. The issue comes from the 3d printing process which tends to create small pockets and porous surfaces where microbes can hide and grow once it gets wet, kind of like a sponge. So you could print a single-use fork and eat with it, but don’t reuse it later.
I think an insert for cutlery would be fine since you aren’t going to be getting it wet or putting it in contact with your mouth or food.
Why plastic washers instead of springs? Is the bed sagging due to the washers deforming with heat?
Wait so what was the trick to save time and filament? Just rotating the part to use fewer supports?
OnShape is my go-to. It’s what I taught my students when I was a TA for an introductory engineering class at college, and they could pick it up in about a day.
Can do just about anything a “professional” cad suite does, but it’s free, works in a browser, and is generally so much better designed so you don’t have to fight against the UI to get anything done.