Modular Acrylic Paint Holder

**Updated 28 Dec 2020:**
*I've had a few problems with the units staying snapped together with the weight of the paint bottles. So, I added an additional clip (PaintHolderClip) that is small and can be used to provide extra retention between adjacent blocks -- either horizontally or vertically. I've printed a group of 21 of these at once with no problem. I would love to see any comments or have feedback if anyone else has actually printed/used this... I know it has been downloaded several times, but not seen any comments or builds posted.*

This is for 3d printing and wall-mounting holders for 2oz bottles of acrylic paint. STL files are attached for individual, 2x2 and 5x2 blocks. Also attached is the python script used to create the model in FreeCAD, which can be modified for other sizes.

The blocks are designed to snap into each other along the edges so they can be combined
multiple ways, however makes sense for the size you want. I was a little disappointed
(but not too