Expandable Test Tube Rack for small object storage

Summary

This is a holder for small test tubes of 12 x 100 mm.
I bought these.

The holders can be coupled on the short sides (to make an impressive display on your desk) or/and on the long sides (to make a compact collection).

Print Settings

Rafts: 

No

Supports:                      

No

Resolution: 

0.4

Infill:                      

20

Filament: Any I use ABS but other will do too                    
                        

Notes:                     

The tubes have a thight fit in the holes in the rack. If there is a slight misfit with your printer/material, scale the stl accordingly in your slicer program.

Post-Printing

The first time you couple two holders it will move a bit heavy. After a few times it gets easier.