Note: This is my first from-the-ground-up 3D design. I'm so happy with how it turned out that I'm posting on Thingiverse: it's the pseudo-adult equivalent of a 4-year-old posting his crayon drawings on the refrigerator.

So here's the deal: I have a few of these boxes from Reaper because I get a discount on them at a local retailer, and for the most part I like them. Sturdy and secure enough, easy enough to use, third positive comment. My biggest problem is that the little removable insert to hold the paint bottles has a lot of wasted space. That wasted space hurts me on a spiritual level, deep down where I will never show (except like I'm doing right now to everyone on the Internet).

So I pulled out the insert and made a new one.

One side will hold 27 dropper bottles, and using left and right sides together can fit up to 57 of them because space for 3 bottles can fit in the gaps between the left and right sides. That means one side alone holds 84% of the capacity of the original insert in half the space, and using both together holds 178% of the original box contents. Why is this important? It isn't, I just like numbers.

Also, each side can be used independently because they're held in place fairly tightly by the little support buttresses on the insides of the box. (This paragraph was an excuse to use the word "buttresses" in a sensible context with a straight face.}

It's also really cool that if I use mixing balls I can just pick up the whole box and shake it to re-mix all the paint inside. I could do that with the original insert too, it's just more satisfying now.