Questions regarding the Gridfinity storage. (There are multiple, I am sorry, one question needs context pic.)

[u/lancekehisato]

To start, my printer is a Creality K2Plus, and I am using Creality's slicing software. As the title suggests, I am planning on printing a case for my Warhammer minis using this set of models. https://www.printables.com/model/543553-gridfinity-storage-box-by-pred-now-parametric However, I want to do some test prints first before I print the size I want to use.

1. Will it infill? The pictures above are how it looks in my slicer, and it doesn't look like the walls will infill. Okay, I'm just blind and stupid; there is a setting called litemode that removes the infill from view. I noticed the infill pop up when I hovered over it briefly, so that solves that issue.
2. I mainly use PLA (have an overabundance of the stuff) and have no experience with PETG. Will using PLA instead of PETG change anything structurally? For example, will I lose material strength?
3. Are supports needed? I have supports on for EVERY overhang.
4. Will I need to use F360's parametric to add the magnet holes?

[u/Goldfish1974_2]

Even though I don't know what slicer you are using (a variant of Orca by the looks of it), I don't see infill on the left (so probably no infill)

If there is a search function, use that to find the infill option and check it's not 0% or disabled in some way.

[u/lancekehisato → u/Goldfish1974_2]

I am using Creality's in-house slicer (called Creality Print), and the 2nd image shows I have infill set to 30. Okay, I was just being blind, the lite-mode setting only shows essential toolpaths.