I made this rack to help in the assembly and making of pens but it can be used for dozens of other uses. The backside can hold rulers, cutters or anything else long and thin. The front compartment can hold components to be assembled, pens or other brushes or art tools. I printed this on a 45 degree angle on my Creality CR10S to allow for the extra length. You will need a larger printer to print this in full size.