I really liked Whity's Rugged Box model but felt that the inserts are a bit too thick. I decided to remix them with 0.8mm wall thickness (so 2 walls on a standard 0.4mm nozzle) to save some plastic and cut down on printing time.
The remixed inserts have exactly the same exterior measurements so they should fit the original model no problem.
Having that said, I had issues fitting mine (both original and remixed) so I ended up printing them at 99% size (X/Y) which gives them little play but otherwise fits nice. I imagine that the sweet spot is somewhere at ~99.5%.
I added fillets to the front edges to make taking out small things (e.g. screws) a little easier.
The added Fusion360 file is an absolute mess as I am still learning how to create a neat project file so please forgive me for any inconveniences while trying to parametrize the inserts. To change anything, please use the steps on the timeline. Godspeed.
The author remixed this model.