Microcentrifuge Tube Rack

thingiverse

This is a simple rack to hold four 1.5 or 2.0 ml microcentrifuge tubes. Tubes from different manufacturers should be more or less the same size, and the few brands I've tried have fit fine. Instructions I printed this upside-down on my PrinterBot and it came out fine, though printing it laying on its back would probably end up being faster because of the longer runs.