What is it? Why it's a brush holder. I had an older one I made from wood, but I always found it a bit... lacking. Oh it worked just fine, but it only held a few brushes and it was kind of a kludge, all things being equal.
So, off the Sketchup and Blender I went. It took a while to knock the design up the way I wanted it, but in the end, it came out just the way I wanted it.
What does it do? It holds brushes when I am painting. I have never been good at holding brushes in my hand for 2 and 3 brush blends, so this helps out there quite a bit. It also holds the brushes horizontally while they dry. While storing them in a cup is completely viable, I have heard from really good painters that storing them horizontally helps keep the water from building up in the ferule and causing premature rot and other bad things.I designed the ends with holes for nails or small screws, but I ended up gluing them to my base after all was said and done. I also used offsets on each end so that you can 'stack' 2 or more of them to create even bigger holders. I actually printed 4 of them so I could make a double stack. I may make another for some other brushes I have around as well :) Here is the whole thing in pictures;
A side view, showing the way they interlock.

