Crystallography sample handling unit

I am not the original author. Published here as a make.

All credits go to M. Solar and N. Trapp, J. Appl. Cryst. (2018). 51, 541-548

Link to the paper: https://doi.org/10.1107/S1600576718003291

Follow the link above for an interesting read, more variations of the model and original stl files.