Universal Expandable interlocking paint rack
thingiverse
All credit to https://www.thingiverse.com/thing:5137598 for this. I was one of the guys he talks about in his description. designing paint racks to save space, filament, and print time. this is an awesome paint rack though looks very professional. ALl I did was add deeper cups for dropper bottles. This iteration should be fairly universal. Print time is over a day, but I used Chep's FF fast print profile (https://www.youtube.com/watch?v=t_9ADBZVCoA) knocked print time down to 10-12 hours based on settings.
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