I needed a bunch of Gridfinity boxes that were bigger than the x1's that Zack Freedman created. So I spent a bunch of time creating them in Fusion360. There's a sampling of files below, and the Fusion360 file is attached. Everything can be controlled with user parameters. For some reason, the template doesn't generate x1s but it can do 1x whatever. If you need an x1, go check out Zack's divider boxes.
I got a .8mm nozzle for these boxes, and it did cause a few weird artifacts on the corners. But the boxes are structurally sound so I'm not complaining. The models do slice well with a .4mm nozzle. No supports necessary.
p.s. I'm working on compiling a bunch of gridfinity boxes and baseplates into a mega download, keep a lookout for it!
Zack's Video -
The author marked this model as their own original creation.