I had previously created some divider bins for the Plano 3701 storage case, but I eventually came to dislike the layered approach to storage. I really wanted to see everything in the bins at a glance while still increasing storage density.
So I came up with a new approach, did a better job at modeling the profiles of the bins to fit, considered how much flexibility I wanted to have, and produced the models we have here today.
They are designed to be mix and matched however you wished although I avoided the impulse to go down to single bin dividers. I've found in practice that the triple dividers are great for really small parts, where the doubles are good for larger parts. You then mix and match as your needs require. It also allows you to use the dividers supplied with the bins in the event you have even larger parts. So it's definitely not an all-or-nothing kind of solution.
The author marked this model as their own original creation.