SMD organizer rack for micro test tubes (stackable)

thingiverse

I store my electrical SMD components and other tiny parts in 2ml micro test tubes (Eppendorf tubes) because they're affordable, compact, and effortless to manage - I got 1000+ tubes shipped for under 20 EUR. To keep them organized, I designed this rack set. The base plate can hold 40 of the 2ml test tubes in a neat row. The slots are aligned to point all the lids in the same direction, making it simple to read the labels on top. The test tubes also fit snugly into their slots, preventing (or at least minimizing) spills when the rack is tilted. The mounted racks can be stacked, and the side parts have grooves that prevent them from slipping off each other. I included two sets of side parts - 110mm and 170mm - so you can choose which one fits your needs. To assemble a single rack set, you'll need one base plate and two side parts, picked to match the length of the base plate's sides. For the base plate, I recommend using at least 50% infill to give it some heft, especially if the filament is prone to breaking. For the side parts, 20% infill should be enough - I used 15%, and they're still plenty sturdy. If you want to add an extra layer of security, feel free to glue the parts together with some super glue.