Coffee 50 ml Centrifuge Racking System

Each clip holds 6x 50ml centrifuge tubes by their caps. The clips makes them easy to organize and move within the racks. There are two rack designs which hold either 8 (4x2) or 12 (6x2) clips. 

I use this system to store single dose (typically 20g, up to 25g depending on bean size per 50ml tube) of medium to ultralight roasted coffee. One of each rack fits inside a "20 in. 1.8 cu. ft." chest freezer. Using only the racks, you can store up to 200 doses of coffee. 

The centrifuge tubes are air tight but not vacuum sealed. From my experience, coffee can be kept frozen while maintaining its quality for well over a year (Note: I only have used this coffee for pour over, I cannot comment on espresso). A google form and spreadsheet is used to track which rack has each coffee (like a digital menu). 

50ml Centrifuge tubes can be standard or skirted ("self standing") but the skirted versions are recommended for easy filling. 

Note: All of these models were optimized for printing on a 178mm square 'mini' print bed. 

Added clips for 3, 4, 5, 7, 8, 9, and 10 (same geometry as the original but untested).